WO2021102843A1 - Procédé et dispositif de communication à courte portée avec capacité anti-interférence - Google Patents

Procédé et dispositif de communication à courte portée avec capacité anti-interférence Download PDF

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Publication number
WO2021102843A1
WO2021102843A1 PCT/CN2019/121729 CN2019121729W WO2021102843A1 WO 2021102843 A1 WO2021102843 A1 WO 2021102843A1 CN 2019121729 W CN2019121729 W CN 2019121729W WO 2021102843 A1 WO2021102843 A1 WO 2021102843A1
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Prior art keywords
channel coding
code rate
sending device
receiving device
wireless link
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PCT/CN2019/121729
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English (en)
Chinese (zh)
Inventor
陈桐
张泽宏
余展
杨玉飞
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华为技术有限公司
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Priority to PCT/CN2019/121729 priority Critical patent/WO2021102843A1/fr
Priority to CN201980102417.XA priority patent/CN114731501A/zh
Publication of WO2021102843A1 publication Critical patent/WO2021102843A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a short-distance communication method and device with anti-interference ability.
  • Bluetooth As a short-distance communication protocol that has been successfully popularized, Bluetooth (BT) technology has been widely used in vehicles, earphones, and remote controls.
  • BLE Bluetooth low energy
  • BLE Bluetooth low energy energy
  • BLE has the advantages of low power consumption, low cost and low complexity compared with classic BT.
  • WBT wide-band bluetooth
  • the present application provides a short-distance communication method and device with anti-interference ability to solve the weak anti-interference ability of Bluetooth in the prior art and improve the anti-interference ability of classic Bluetooth, low-power Bluetooth or broadband Bluetooth.
  • the embodiments of the present application provide a short-distance communication method with anti-interference capability.
  • the method may be executed by a communication device as a sender, or executed by a chip or software or hardware device that has the function of sending data.
  • the method includes: a sending device and a receiving device establish a wireless link based on a short-range communication protocol; the sending device determines the code rate of channel coding according to the interference strength of the space where the wireless link is located; the sending device and the receiving device The channel coding mode is negotiated; the sending device uses the negotiated channel coding mode and the code rate to perform channel coding on the data packet; the sending device sends the channel-coded data packet to the all over the wireless link ⁇ Receiving equipment.
  • the channel coding rate can be selected according to the interference strength of the space where the wireless link is located, and after the sending device and the receiving device agree on the channel coding method of the data packet , Adopt the negotiated channel coding method and the determined code rate to encode the data packet to be transmitted, so the gain and anti-interference ability of the wireless link can be improved.
  • the negotiation of a channel coding mode between the sending device and the receiving device includes:
  • the sending device sends a request message to the receiving device, and the request message carries a channel coding method; the request message is used to request the receiving device to accept the data packet transmitted by the sending device using the channel coding method. Channel coding is performed; the sending device receives the consent response message for the request message sent by the receiving device. Based on this solution, the sending device can negotiate the channel coding method with the receiving device through the request message and the agreement response message, and use the agreed channel coding method to perform channel coding on the data packet to be transmitted, which can better improve the short-distance communication link, such as The anti-jamming capability of the Bluetooth communication link.
  • the method before the sending device sends the channel-encoded data packet to the receiving device through the wireless link, the method further includes: the sending device sends the code rate to the Receiving equipment. Based on this solution, the sending device sends to the receiving device the code rate of the channel coding determined according to the interference intensity of the space where the wireless link is located, so that the receiving device can accurately decode the received data packet according to the code rate of the channel coding to obtain Valid data in the data packet.
  • the method before the sending device sends the channel-coded data packet to the receiving device through the wireless link, the method further includes: the sending device sends the switching communication mode to the receiving device A point in time; wherein the sending device and the receiving device communicate using the channel coding method after arriving at the point in time.
  • the method before the sending device performs channel coding on the data packet, the method further includes: the sending device determines that the data packet arrives at the time point. Based on this solution, the sending device sends the time point to the receiving device, so that the sending device and the receiving device can synchronously switch the communication mode to using the channel coding mode for communication.
  • the data packet may include multiple data segments, and the sending device adopts the channel coding method and the code rate to perform channel coding on the data packet, which may specifically include: For any data segment, the sending device divides the any data segment to obtain at least one code block; the sending device uses the channel coding method and the code rate to perform the respective processing on the at least one code block Channel coding. Based on this solution, the data of each data segment is divided to obtain at least one code block, and the channel coding method agreed upon by consensus and the code determined according to the interference intensity of the space where the wireless link is located are adopted for at least one code block.
  • Channel coding can improve the anti-interference ability of the wireless link when transmitting any data segment.
  • the multiple data segments may include a preamble data segment, an access code data segment, a packet header data segment, a payload header data segment, and a payload data segment.
  • that the sending device divides the any data segment to obtain at least one code block may include: the sending device divides the any data segment to obtain multiple codes Block; the plurality of code blocks include a first code block and a second code block, wherein the data amount of the second code block is not greater than the data amount of the first code block; the first code block is located Before the second code block; the data amounts of the multiple code blocks are not completely the same.
  • non-uniform division is used when any data segment is divided, so that the data volume of each code block obtained by division is successively decreased, which can improve the anti-interference ability of the wireless link while meeting the time requirements of the wireless link. Delay request.
  • the code rate when the bandwidth of the wireless link is the first bandwidth, the code rate may be the first code rate; when the bandwidth of the wireless link is the second bandwidth, the code rate It may be a second code rate; wherein, the first bandwidth is lower than the second bandwidth, and the first code rate is greater than the second code rate.
  • the wireless link when the bandwidth is narrow, the wireless link has high sensitivity and strong anti-interference ability, but the data transmission rate is low.
  • a higher code rate can be used to channel-encode data packets, which can improve the transmission of data packets.
  • Speed and can improve the anti-interference ability of the wireless link.
  • the bandwidth is high, the sensitivity of the wireless link will decrease, and the anti-interference ability will be low.
  • a lower code rate can be used to channel-encode data packets, which can improve the anti-interference ability of the wireless link.
  • the code rate when the interference intensity in the space where the wireless link is located is weak, the code rate may be a high code rate; when the interference intensity in the space where the wireless link is located is strong, the code rate The bit rate can be a low bit rate.
  • the strength of the interference here can be judged by the threshold. For example, when the interference intensity is greater than a specified value, it indicates that the interference intensity is strong, and when it is less than or equal to the specified value, it indicates that the interference intensity is weak.
  • the specified value can be predetermined according to an empirical value.
  • the bit rate can also be measured by a threshold.
  • a certain code rate when a certain code rate is greater than a preset value, it may indicate that the code rate is high, and when a certain code rate is less than or equal to the preset value, it may indicate that the code rate is low.
  • the preset value can also be predetermined according to empirical values, for example, it can be 1/2, or 2/3, etc.
  • the code rate when the interference intensity of the space where the wireless link is located is less than or equal to a first preset threshold, the code rate may be a third code rate; When the interference intensity of the space is greater than the first preset threshold, and is less than or equal to the second preset threshold, the code rate may be a fourth code rate; the interference intensity in the space where the wireless link is located is greater than the second preset threshold , The code rate may be a fifth code rate; wherein, the third code rate is greater than the fourth code rate, and the fourth code rate is greater than the fifth code rate.
  • the third code rate, the fourth code rate, and the fifth code rate here may not be specific code rate values, but a certain type of code rate.
  • the third code rate may refer to a code rate greater than or equal to 5/6
  • the fourth code rate may refer to a code rate greater than 1/2 and less than 5/6
  • the fifth code rate may refer to a code rate less than or equal to 1. /2 bit rate.
  • the first preset threshold and the second preset threshold may be predetermined according to empirical values.
  • the code rate during channel coding is selected according to the interference intensity of the space where the wireless link is located, which can improve the anti-interference ability of the wireless link while ensuring the transmission rate of data packets.
  • the channel coding manner may also be a channelless coding manner.
  • the interference threshold can be predetermined according to empirical values.
  • the sending device may not encode the data packet, thereby improving The transmission rate of the data packet.
  • this application provides another short-distance communication method with anti-interference capability.
  • the method can be executed by a communication device as a receiver, or by a chip or software or hardware device that has the function of receiving data.
  • the method includes: a receiving device and a sending device establish a wireless link based on a short-range communication protocol; the receiving device and the sending device negotiate a channel coding mode; the receiving device receives the data packet sent by the sending device; the data The packet is obtained by channel coding by the sending device using the negotiated channel coding mode.
  • the negotiation of a channel coding mode between the receiving device and the sending device includes:
  • the receiving device receives a request message sent by the sending device; the request message carries a channel coding method; the request message is used to request the receiving device to accept the data to be transmitted by the sending device using the channel coding method
  • the packet is channel-encoded; the receiving device sends a consent response message to the sending device when accepting that the sending device uses the channel coding method to perform channel-encoding on the data packet to be transmitted.
  • the method before the receiving device receives the data packet sent by the sending device, the method further includes: the receiving device receives the code rate of the channel coding sent by the sending device; the channel coding The code rate is determined by the sending device according to the interference intensity of the space where the wireless link is located; after the receiving device receives the data packet sent by the sending device, it further includes: the receiving device uses the The data packet is decoded by the channel coding mode and the code rate.
  • the method before the receiving device receives the data packet sent by the sending device, the method further includes: the receiving device receives the time point when the communication mode is switched sent by the sending device; The device and the receiving device communicate using the channel coding method after reaching the time point. In this way, before the receiving device receives the data packet sent by the sending device, the method further includes: when the receiving device determines that the time point is reached, switching to use the channel coding method for communication.
  • the data packet may include multiple data segments; specifically, it may include: a preamble data segment, an access code data segment, a packet header data segment, a payload header data segment, and a payload data segment .
  • each of the data segments may include multiple code blocks; the multiple code blocks may include a first code block and a second code block.
  • the data amount of the second code block is not greater than the data amount of the first code block; the first code block is located before the second code block; the data amounts of the multiple code blocks are not completely the same ;
  • Each of the code blocks is respectively coded using the channel coding mode.
  • the code rate when the bandwidth of the wireless link is the first bandwidth, the code rate may be the first code rate; when the bandwidth of the wireless link is the second bandwidth, the code rate It may be a second code rate; wherein, the first bandwidth is lower than the second bandwidth, and the first code rate is greater than the second code rate.
  • the code rate when the interference intensity in the space where the wireless link is located is weak, the code rate may be a high code rate; when the interference intensity in the space where the wireless link is located is strong, the code rate The bit rate can be a low bit rate.
  • the code rate when the interference intensity of the space where the wireless link is located is less than or equal to a first preset threshold, the code rate may be a third code rate; When the interference intensity of the space is greater than the first preset threshold, and is less than or equal to the second preset threshold, the code rate may be a fourth code rate; the interference intensity in the space where the wireless link is located is greater than the second preset threshold , The code rate may be a fifth code rate; wherein, the third code rate is greater than the fourth code rate, and the fourth code rate is greater than the fifth code rate.
  • the channel coding mode may also be a channelless coding mode.
  • an embodiment of the present application also provides a sending device, which can be used to perform the operations in the foregoing first aspect and any possible implementation manner of the first aspect.
  • the sending may include a module or unit for performing each operation in the above-mentioned first aspect or any possible implementation of the first aspect.
  • it includes a processing unit and a communication unit.
  • an embodiment of the present application also provides a receiving device, which can be used to perform operations in the foregoing second aspect and any possible implementation manner of the second aspect.
  • the receiving device may include modules or units for performing the above-mentioned second aspect or any possible implementation of the second aspect.
  • it includes a processing unit and a communication unit.
  • an embodiment of the present application further provides a communication system, including the sending device of the foregoing third aspect and the receiving device of the foregoing fourth aspect.
  • the embodiments of the present application provide a chip system, including a processor, and optionally a memory; where the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory to make the installation
  • a communication device with a chip system can execute any one of the foregoing first aspect or any possible implementation of the first aspect; or a communication device with a chip system installed can execute any of the foregoing second aspect or any possible implementation of the second aspect Any method of implementation.
  • the embodiments of the present application provide a computer program product.
  • the computer program product includes: computer program code.
  • the computer program code When the computer program code is executed by the processor of the communication device, the communication device can execute the first aspect or the first aspect. Any method in any possible implementation manner of the aspect; and/or, so that the communication device can execute the above-mentioned second aspect or any method in any possible implementation manner of the second aspect.
  • the embodiments of the present application provide a computer-readable storage medium, and the computer-readable storage medium stores a computer program.
  • the computer program When the computer program is run by the processor of the communication device, it can cause the communication device (for example, to send Device) executes any one of the foregoing first aspect or any possible implementation of the first aspect; and/or causes a communication device (for example, a receiving device) to execute the foregoing second aspect or any possible implementation of the second aspect Any of the methods.
  • Figure 1 is one of the application scenarios provided by this application.
  • FIG. 2 is the communication system provided by this application.
  • FIG. 3 is one of the schematic flowcharts of a short-distance communication method with anti-interference capability provided by this application;
  • FIG. 4 is a schematic diagram of the data packet structure provided by this application.
  • FIG. 5 is one of the schematic flowcharts of a short-distance communication method with anti-interference capability provided by this application;
  • Figure 6 is one of the application scenarios provided by this application.
  • Figure 7 is one of the schematic diagrams of the application scenarios provided by this application.
  • Figure 8 is one of the application scenarios provided by this application.
  • FIG. 9 is a schematic diagram of a terminal provided by this application.
  • FIG 10 is a schematic diagram of the network equipment provided by this application.
  • Bluetooth technology includes classic BT, BLE and broadband Bluetooth technology.
  • Figure 1 it is a schematic diagram of an application scenario of Bluetooth technology.
  • the terminal 100 and the terminal 101 in FIG. 1 can represent a Bluetooth device, that is, a device with Bluetooth communication capabilities.
  • the Bluetooth device provided in this application can also be a car Bluetooth, a Bluetooth headset, a Bluetooth gateway, or a Bluetooth on a handheld mobile terminal, etc. .
  • the bandwidth of classic BT and BLE is only 1M or 2M, so the bandwidth is narrow and the data transmission rate is low, and it cannot be applied to communication scenarios that require high latency and high data transmission quality.
  • the bandwidth of broadband Bluetooth can reach 4M, which improves the data transmission rate.
  • the anti-interference ability of broadband Bluetooth is reduced, and it cannot be used in communication scenarios with complex interference or high requirements for anti-interference. Therefore, the current Bluetooth technology cannot improve both the data transmission rate and the anti-interference ability.
  • the short-range wireless communication systems can include, for example, wireless local area network technology, Bluetooth technology, such as classic BT, BLE, and broadband Bluetooth technology, and future Bluetooth technology, such as Bluetooth A communication system built with 6.0 technology.
  • embodiments of this application provide a short-distance communication method with anti-interference ability.
  • the sending device can follow the wireless link.
  • the interference intensity of the space where the road is located determines the bit rate of the channel coding.
  • the sending device sends a request message carrying a channel coding method to the receiving device, and when receiving the receiving device's consent response message for the request message, the sending device uses the aforementioned channel coding method and code rate to perform channel coding on the data packet.
  • the sending device sends the channel-encoded data packet to the receiving device through the wireless link.
  • the sending device uses the channel coding method negotiated by the sending device and the receiving device, and the channel coding rate determined according to the interference intensity of the space where the wireless link is located, to channel-encode the data packet to be sent, which can improve the data transmission efficiency.
  • the channel coding method may include polar coding, low density party check (LDPC) coding, error correction code (bose ray-chaudhuri hocquenghem, BCH) coding, and the like. Since this method performs channel coding on the data packet when transmitting the data packet, the transmission efficiency of the data packet can be improved.
  • the code rate of the channel coding determined according to the interference intensity of the space where the wireless link is located is used to perform the data packet Channel coding can also improve the anti-interference ability of communication.
  • the technical solutions provided in the embodiments of the present application may be used for communication between terminal devices, or may also be used for communication between terminal devices and network devices.
  • the network device may be a device with a wireless transceiver function or a chip that can be installed in the network device.
  • the network device includes but is not limited to: evolved Node B (eNB), radio network controller (radio network controller). , RNC), Node B (Node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB) ), baseband unit (BBU), access point (AP), wireless relay node, wireless backhaul node, transmission and reception point in wireless fidelity (WIFI) systems , TRP or transmission point, TP), etc.
  • eNB evolved Node B
  • RNC radio network controller
  • Node B Node B
  • BSC base station controller
  • BTS base transceiver station
  • BTS home base station
  • BBU baseband unit
  • AP access point
  • WIFI wireless fidelity
  • TRP or transmission point, TP transmission point
  • Terminal equipment can also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal, wireless communication equipment, user Agent or user device.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ( The wireless terminal in transportation safety, the wireless terminal in the smart city, the wireless terminal in the smart home, and so on.
  • terminal devices with wireless transceiver functions and chips that can be installed in the aforementioned terminal devices are collectively referred to as terminal devices.
  • the network device or terminal device mentioned in the embodiments of the present application may also include multiple components related to signal transmission and reception (for example, a processor, a modulator, a multiplexer, a demodulator, or a demultiplexer). Wait).
  • a processor for example, a processor, a modulator, a multiplexer, a demodulator, or a demultiplexer. Wait).
  • the communication system shown in FIG. 2 is taken as an example to describe in detail the communication scenarios applied to the embodiments of this application.
  • the communication scenario is that both the sending device and the receiving device are terminal devices as an example. .
  • the communication system includes a sending device 200 and a receiving device 201.
  • the sending device 200 encrypts the sending data packet (TX payload). Among them, two encrypted channels are included.
  • the first is to add a CRC code for cyclic redundancy check (CRC) to the data packet, and then perform E0 encryption.
  • E0 encryption is the encryption algorithm of the Bluetooth link layer, which belongs to the stream encryption method, that is, the data stream and the key bit stream are XORed.
  • the second is to add the CRC code after encrypting the data packet with Advanced Encryption Standard-Counter with Cipher Block Chain-ing-Message Authentication Code.
  • the sending device 200 may negotiate an encryption method with the receiving device 201, so as to select an encryption path corresponding to the negotiated encryption method. Taking the second encryption path as an example, after the transmitting device 200 performs whitening processing on the encrypted data packet, the transmitting device 200 performs channel encoding on the whitening processed data packet.
  • the channel coding mode is determined in advance with the receiving device 201, and the code rate of the channel coding is determined by the transmitting device 200 according to the interference intensity of the space where the wireless link established with the receiving device 201 is located.
  • the sending device 200 modulates the channel-encoded data packet to a high frequency, and then mixes it to the high frequency through a radio frequency (RF) interface for transmission.
  • RF radio frequency
  • the receiving device 201 receives the data packet and demodulates the received data packet to the baseband, and then decodes it according to the channel coding mode and the code rate of the channel coding determined through negotiation with the sending device 200, where
  • the channel coding method can be a coding method agreed upon by the sending device 200 and the receiving device 201 through interactive negotiation, and the bit rate of the channel coding can be the interference intensity of the sending device 200 according to the space where the sending device 200 establishes the wireless link with the receiving device 201. It is determined, and then notified by the sending device 200 to the receiving device 201.
  • the receiving device 201 After the receiving device 201 performs de-whitening processing on the decoded data packet, it sequentially performs CRC check and AES-CCM decoding to obtain a received data packet (RX Paylaod).
  • the decryption path of the receiving device 201 also includes two decryption paths. The first is to perform CRC check after E0 decryption of the data packet. The second is to perform AES-CCM decryption after the CRC check of the data packet. Which encryption path is selected by the sending device 200, the receiving device 201 also selects the corresponding decryption path accordingly.
  • FIG. 2 is only a simplified schematic diagram of an example for ease of understanding, and the communication system may also include other receiving devices or sending devices, which are not shown in FIG. 2.
  • Data segment refers to different functional data in the data packet.
  • the function of the payload header in the data packet can be used to indicate the amount of data of the payload, and the function of the payload is used to transmit pure information, then the payload header and the payload can be called different data segments .
  • Code block a resource block obtained by dividing a data packet or data segment.
  • Channel coding mode refers to the coding mode used when channel coding data packets.
  • the channel coding mode in the embodiment of the present application may include block codes such as polar coding, LDPC coding, BCH coding, and so on.
  • the code rate of channel coding refers to the ratio of the effective data volume to the total data volume involved in coding after channel coding is performed on a code block using the code rate of the channel coding. For example, if a code block is encoded with a code rate of 1/2, the ratio of the effective data amount of the code block to the total data amount involved in encoding after encoding is 1/2.
  • the code rate in the embodiment of the present application is not directed to the code rate of each code block, but is directed to the code rate of any data segment.
  • the code rate of channel coding is 1/2
  • the transmitting device divides the payload data segment into 3 code blocks.
  • the data amount of code block 1 after channel coding is 1024 bits
  • the effective data amount of code block 1 after channel coding is 512 bits.
  • the effective data amount is 1/2 of the data amount of code block 1.
  • the data amount of code block 2 after channel coding is 512 bits
  • the effective data amount of code block 2 after channel coding is 250 bits.
  • the ratio of the effective data amount to the data amount of code block 2 is close to 1/2.
  • the data amount of code block 3 after channel coding is 512 bits, and the effective data amount of code block 3 after channel coding is 258 bits.
  • the ratio of the effective data amount to the data amount of the code block 3 is close to 1/2. Therefore, the code rate of the channel coding of the data segment containing these 3 code blocks is about 1/2.
  • the ratio of the effective data amount of each code block to the data amount of the code block after channel coding and the offset of the code rate are within a preset range.
  • the preset range may be, for example, [-0.01, 0.01], or may also be, for example, [-0.1, 0.1], etc., which is not specifically limited in this application.
  • At least one means one or more
  • plural means two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A , B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an "or” relationship.
  • the following at least one item (item) or similar expressions refer to any combination of these items, including any combination of single item (item) or plural items (item).
  • at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • a schematic flow chart of a short-distance communication method with anti-interference capability may include the following steps:
  • Step 301 The sending device and the receiving device establish a wireless link based on the short-range communication protocol.
  • the short-range communication protocol may be a link established based on the Bluetooth communication protocol, or may be a link established based on a wireless local area network protocol.
  • Step 302 The sending device determines the code rate of the channel coding according to the interference intensity of the space where the wireless link is located.
  • the sending device after the sending device establishes a wireless link with the receiving device, it can scan the interference intensity of the space where the wireless link is located through its own scanning method. Alternatively, the sending device can also measure the channel quality of the wireless link through channel measurement. Among them, the channel quality is inversely proportional to the interference intensity.
  • the code rate may be a high code rate;
  • the interference intensity in the space is strong, it is determined that the code rate may be a low code rate.
  • the strength of the interference here can be judged by the threshold. For example, when the interference intensity is greater than a specified value, the interference intensity is strong, and when the interference intensity is less than or equal to the specified value, the interference intensity is weak.
  • the designated value can be determined in advance based on empirical values.
  • the bit rate can also be judged by a threshold.
  • a certain code rate when a certain code rate is greater than a preset value, it may indicate that the code rate is high, and when a certain code rate is less than or equal to the preset value, it may indicate that the code rate is low.
  • the preset value can be 1/2, or 2/3, etc. Among them, the preset value can also be determined in advance based on empirical values.
  • the code rate when the interference intensity is greater than or equal to the specified value, the code rate may be greater than 1/2, such as 2/3, 3/4, or 5/6; when the interference intensity is less than the specified value, the code rate The code rate can be less than or equal to 1/2, such as 1/2.
  • the code rate when the interference intensity is greater than the specified value, the code rate may be greater than 1/2, such as 2/3, 3/4, or 5/6; when the interference intensity is less than or equal to the specified value, the code rate Can be less than or equal to 1/2.
  • the code rate when the channel quality is less than or equal to the specified value, the code rate may be greater than 1/2, such as 2/3, 3/4, or 5/6; when the channel quality is greater than the specified value, the code rate may be less than Or equal to 1/2, such as 1/2.
  • the code rate may be the third when the interference intensity of the space where the wireless link is located is less than or equal to the first preset threshold.
  • Code rate when the interference intensity in the space where the wireless link is located is greater than the first preset threshold and less than or equal to the second preset threshold, the code rate may be the fourth code rate; where the wireless link is When the interference intensity in the space is greater than the second preset threshold, the code rate may be a fifth code rate; wherein, the third code rate is greater than the fourth code rate, and the fourth code rate is greater than the first code rate. Five bit rate.
  • the first preset threshold is smaller than the second preset threshold.
  • the third code rate, the fourth code rate, and the fifth code rate may not be specific code rate values, but a certain type of code rate.
  • the third code rate may be a code rate greater than or equal to 5/6
  • the fourth code rate may be a code rate greater than 1/2 and less than 5/6
  • the fifth code rate may be less than or equal to 1/2
  • the bit rate may be a code rate greater than or equal to 3/4
  • the fourth code rate may be a code rate greater than 2/3 and less than 3/4
  • the fifth code rate may be less than or equal to 2/ 3 bit rate.
  • the third code rate may be a code rate greater than 3/4
  • the fourth code rate may be a code rate less than or equal to 3/4 and greater than 1/2
  • the fifth code rate may be less than or equal to 1/ The bit rate of 2.
  • the code rate when the interference intensity is less than the first preset threshold, the code rate is the third code rate; when the interference intensity is greater than or equal to the first preset threshold and less than the second preset threshold, the code rate can be the fourth code Rate; when the interference intensity is greater than or equal to the second preset threshold, the code rate may be the fifth code rate.
  • the bit rate when the channel quality is greater than or equal to the first preset threshold, the bit rate may be the third bit rate; when the channel quality is less than the first preset threshold and greater than or equal to the second preset threshold, the bit rate may be the first Four code rate; when the channel quality is less than the second preset threshold, the code rate may be the fifth code rate.
  • the first preset threshold is greater than the second preset threshold.
  • the interference intensity of the space where the wireless link is located is inversely proportional to the code rate, that is, the greater the interference intensity, the smaller the code rate.
  • the code rate of the channel coding can be reduced, which can improve the transmitting equipment.
  • the anti-interference ability of the receiving equipment When the interference intensity is small, increasing the code rate of the channel coding can increase the transmission rate of the data packet, which can better improve the transmission rate of the data packet while ensuring the anti-interference ability of the transmitting device and the receiving device.
  • the code rate of the channel coding may have a corresponding relationship with the bandwidth of the wireless link.
  • the code rate when the bandwidth of the wireless link is the first bandwidth, the code rate may be the first code rate; when the bandwidth of the wireless link is the second bandwidth, the code rate may be the second code rate.
  • the first bandwidth may be the bandwidth of classic BT and BLE, such as 1M or 2M; the second bandwidth may be the bandwidth of broadband Bluetooth technology, such as 3M, 4M, etc.
  • the first bandwidth may be a bandwidth less than or equal to the bandwidth threshold, for example, the bandwidth threshold may be 1M or 2M, etc., then the first bandwidth is a bandwidth less than or equal to 1M, or the first bandwidth is a bandwidth less than or equal to 2M;
  • the second bandwidth may be a bandwidth greater than the bandwidth threshold.
  • the second bandwidth may be a bandwidth greater than 1M, or the second bandwidth may be a bandwidth greater than 2M.
  • the first bandwidth may be a bandwidth less than the bandwidth threshold, for example, the first bandwidth is a bandwidth less than 2M, or the first bandwidth is a bandwidth less than 3M; the second bandwidth may be a bandwidth greater than or equal to the bandwidth threshold, such as the second bandwidth.
  • the bandwidth is a bandwidth greater than or equal to 2M, or the second bandwidth is a bandwidth greater than or equal to 3M.
  • the first code rate here may be a code rate greater than or equal to the code rate threshold, for example, the code rate threshold may be 1/2, or 2/3, and so on. Then the first bit rate is greater than or equal to 2/3, or the first bit rate can also be greater than or equal to 5/6; the second bit rate can be a bit rate less than the bit rate threshold, for example, the second bit rate can be less than 2/3 , Or the second bit rate can be less than 5/6.
  • the first code rate may be a code rate greater than the code rate threshold, for example, the first code rate is greater than 1/2, or the first code rate is greater than 2/3; the second code rate is less than or equal to the code rate threshold. Rate, for example, the second code rate is less than or equal to 1/2, or the second code rate is less than or equal to 2/3.
  • the wireless link is established based on the BLE communication protocol or based on the classic Bluetooth communication protocol.
  • the sending device can determine that the channel coding rate is greater than or equal to 2/3 according to the bandwidth of the wireless link, such as 2/3, 3/ 4, 5/6, etc.
  • the wireless link is established based on the broadband Bluetooth communication protocol, and the sending device can determine that the code rate of the channel coding is less than 2/3, such as 1/2, according to the bandwidth of the wireless link.
  • Step 303 The sending device negotiates the channel coding mode with the receiving device.
  • the sending device may send a request message to the receiving device.
  • the request message carries the channel coding method to be adopted by the sending device, and the request message is used to request the receiving device to accept that the sending device uses the channel coding method to perform channel coding on the data packet to be transmitted.
  • the receiving device accepts that the sending device uses the channel coding method to perform channel coding on the data packet to be transmitted, and sends an agreement response message (acknowledge character, ACK) to the sending device.
  • the process of the sending device sending the request message carrying the channel coding method to the receiving device is equivalent to the process of starting the negotiation between the sending device and the receiving device on the channel coding method adopted by both parties.
  • the receiving device when it does not agree that the sending device uses the channel coding method to perform channel coding on the data packet to be transmitted, it may send a negative-acknowledgment (NACK) message to the sending device.
  • NACK negative-acknowledgment
  • the channel coding mode can be negotiated again with the receiving device after a preset period. Among them, the preset period can be 15s, 30s, etc., which can be predetermined according to empirical values.
  • the sending device receives the NACK, the previous channel coding method is maintained to transmit the data packet with the receiving device.
  • the previous channel coding mode here may be the channel coding mode before the sending device sends the request message to the receiving device, for example, it may be a polarization code coding mode, or it may also be a channelless coding mode.
  • the request message may carry a channel coding method supported by both the sending device and the receiving device.
  • the consent response message indicates that the receiving device accepts that the sending device uses the channel coding method to perform channel coding on the data packet to be transmitted.
  • the sending device and the receiving device when the sending device and the receiving device establish a wireless link, the sending device and the receiving device will communicate with the channel coding methods they support. For example, the sending device sends to the receiving device the channel coding methods supported by itself including 1, 2, 3, The receiving device sends the channel coding mode 2 supported by itself to the sending device. Then the sending device determines that the channel coding mode supported by both parties is 2, and the channel coding mode carried in the request message is 2.
  • the channel coding mode carried in the request message may be the channel coding mode with the highest priority. For example, if the sending device determines that the channel coding modes supported by both parties are 2 and 3, the channel coding mode carried in the request message by the sending device is channel coding mode 2 with the higher priority according to the preset channel coding mode priority.
  • the request message may carry a channel coding mode supported by itself. For example, if the channel coding modes supported by the sending device are 1, 2, and 3, the channel coding modes 1, 2, and 3 can be carried in the request message.
  • the receiving device may carry the channel coding mode supported by the receiving device in the consent response message.
  • the sending device may use a channel coding method supported by both the sending device and the receiving device to perform channel coding on the data packet. For example, the request message carries channel coding methods 1, 2, and 3, and the receiving device carries channel coding method 2 in the consent response message, and the sending device uses channel coding method 2 to channel-encode the data packet.
  • the sending device can carry the channel coding mode with higher priority in the request message according to the preset priority of the channel coding mode, and send it to the receiving device again
  • the sending device uses the channel coding method with high priority to channel the data packet and uses the channel coding method with high priority to perform the channel coding on the data packet.
  • Channel coding when receiving an agreement response message from the receiving device for the request message, the sending device uses the channel coding method with high priority to channel the data packet and uses the channel coding method with high priority to perform the channel coding on the data packet.
  • the sending device may also send the channel coding manner determined in step 302 to the receiving device.
  • the request message may carry the channel coding mode and the code rate of the channel coding determined in step 302 at the same time.
  • the sending device may separately send signaling carrying the code rate of channel coding to the receiving device. After receiving the signaling carrying the code rate, the receiving device may send response signaling for the signaling carrying the code rate to the sending device.
  • the sending device may also send the time point at which the communication mode is switched to the receiving device.
  • the sending device and the receiving device communicate using the channel coding method after reaching the time point.
  • the sending device may carry the channel coding mode and the time point of switching the communication mode in the request message. If the request message does not carry the time point, the sending device may separately send the signaling carrying the time point to the receiving device. After receiving the signaling that carries the time point, the receiving device may send response signaling for the signaling that carries the time point to the sending device. Based on this solution, the sending device sends the time point to the receiving device, so that the sending device and the receiving device can synchronously switch the communication mode to using the channel coding mode for communication.
  • the sending device may also send the first signaling carrying the time point to the receiving device.
  • the sending device may also send the first signaling carrying the code rate of the channel coding to the receiving device, and it can also send the time to the receiving device. Point of the second signaling.
  • the sending device may also send the third signaling carrying the code rate of the channel coding to the receiving device.
  • the sending device may also send the code rate carrying the channel coding and the fourth signaling at the time point to the receiving device. This application is not limited here.
  • step 302 can be performed first, then step 303, or step 303 can be performed first, then step 302, or step 302 and step 303 can be performed simultaneously, which is not limited in this application. .
  • Step 304 When the sending device and the receiving device arrive at the time point, they switch to use the negotiated channel coding method for communication. Of course, this step is optional. To monitor whether the set time point is reached, the sending device and the receiving device will switch to using the negotiated channel coding method for communication, just to better make the sending device and the receiving device better. Use the same communication method to communicate well in sync.
  • Step 305 The sending device uses the negotiated channel coding mode and the code rate of the channel coding determined in step 302 to step 304 to perform channel coding on the data packet to be sent to the receiving device.
  • the data packet to be transmitted may include multiple data segments. As shown in FIG. 4, it is a schematic diagram of the structure of a data packet to be transmitted provided in an embodiment of this application.
  • the data packet may include a preamble data segment, an access code access code data segment, a packet header data segment, a payload header data segment, and a payload payload data segment.
  • the sending device when it performs channel coding on the data packet, it can perform channel coding on all data segments, or can choose to perform channel coding on any data segment. For example, the sending device may perform channel coding on the preamble data segment, the packet header data segment, the payload header data segment, and the payload data segment.
  • the code rate when encoding multiple data segments can be the same or different.
  • the code rate is 1/4 when encoding the payload header data segment, and the code is used when encoding the payload data segment. Rate 1/2 etc.
  • the code rate when channel coding is performed on the preamble data segment, the packet header data segment, and the payload header data segment may be the default code rate.
  • the code rate of the preamble data segment can use the default code rate 1/4
  • the code rate of the header data segment can use the default code rate 1/3, and the code rate of the payload header data segment.
  • the default code rate 1/3 can be used, and the code rate of the payload data segment can be determined according to the interference intensity of the space where the wireless link is located.
  • the sending device may divide any data segment for any data segment when channel encoding the data packet to obtain at least one code block.
  • the sending device can evenly divide any data segment, and the data amount of each code block is equal.
  • the sending device evenly divides the payload data segment, where the data volume of each code block is 512 bits.
  • the sending device separately performs channel coding on each code block obtained by segmentation. Based on this solution, at least one code block is obtained by dividing any data segment, and channel coding is performed on the at least one code block, which can improve the anti-interference ability of the transmitting device and the receiving device.
  • the sending device performs non-uniform division for any data segment. For example, the sending device divides any data segment to obtain multiple code blocks; the multiple code blocks include a first code block and a second code block, wherein the data amount of the second code block is not greater than all the code blocks. The data amount of the first code block; the first code block is located before the second code block; the data amounts of the multiple code blocks are not completely the same.
  • the sending device non-uniformly divides the payload data segment of the data packet to obtain 6 code blocks.
  • the data volume of code block 1 is 1024 bits
  • the data volume of code block 2 is 502 bits
  • the data volume of code block 3 is 500 bits
  • the data volume of code block 4 is 264 bits
  • the data volume of code block 5 is 256 bits
  • the data volume of code block 6 is 256 bits.
  • the amount of data is 64bit.
  • the sending device performs non-uniform division of the payload data segment of the data packet to obtain 5 code blocks.
  • the data volume of code block 1 is 502 bits
  • the data volume of code block 2 is 250 bits
  • the data volume of code block 3 is 250 bits
  • the data volume of code block 4 is 109 bits
  • the data volume of code block 5 is 60 bits. It should be noted that during polar encoding, the data amount of each code block after encoding needs to meet 2 n .
  • the data volume of code block 1 after encoding can be 1024 bits
  • the data volume of code block 2 after encoding can be 512 bits
  • the data volume of code block 3 after encoding is 512 bits
  • the data volume of code block 4 after encoding is 128 bits
  • the data amount of code block 5 after encoding is 64 bits.
  • the sending device uses a non-uniform segmentation method when dividing the data segment, and the data volume of the code block decreases sequentially from front to back, which can improve the anti-interference ability of the sending device and the receiving device while meeting the transmission of Bluetooth technology. Delay requirements.
  • the sending device does not perform channel encoding on the data packet.
  • the interference intensity in the space where the wireless link is located is less than the interference threshold, it indicates that the interference intensity is weak and has little impact on the wireless link.
  • the sending device sends the data packet to be transmitted to the receiving device, it may not perform channel coding on the data packet, and send the data packet without channel coding to the receiving device.
  • the sending device may send a data packet without channel coding to the receiving device.
  • the interference intensity of the space where the wireless link is located is very small, and the data packet is not channel-coded, which can increase the transmission rate of the data packet.
  • Step 306 The sending device sends the channel-coded data packet to the receiving device through the wireless link established in step 301.
  • Step 307 The receiving device receives the data packet sent by the sending device, and uses the channel coding mode and the code rate to decode the data packet.
  • the sending device and the receiving device use a negotiated channel coding method for channel coding during the communication between the sending device and the receiving device, the gain of the data packet can be increased, so as to improve the communication between the sending device and the receiving device.
  • the anti-interference ability using the channel coding rate determined according to the interference intensity of the space where the wireless link established between the sending device and the receiving device is located, and channel coding the data packet can improve the communication performance between the sending device and the receiving device.
  • the effective data volume of the data packet after channel coding is selected to increase the transmission rate of the data packet.
  • the sending device when the sending device and the receiving device use the channel coding communication mode, the sending device can periodically determine the interference intensity of the space where the wireless link is located. For example, the period can be set to 5min, 15min, etc., where the period can be predetermined according to empirical values.
  • the transmitting device determines that the interference intensity of the space where the wireless link is located has changed, for example, when the interference intensity is greater than the interference intensity during the last measurement, or when the interference intensity is less than the interference intensity during the last measurement, etc. , Can send a request signaling for switching the code rate to the receiving device.
  • one of the schematic flowcharts of a short-distance communication method with anti-interference capability may include the following steps:
  • Step 501 After sending the channel-coded data packet to the receiving device, the sending device scans the interference intensity of the space where the wireless link is located when the specified period is reached.
  • Step 502 The sending device determines that the interference intensity of the space where the current wireless link is located is different from the interference intensity during the last measurement, and sends a handover request message to the receiving device.
  • the interference intensity here is different from the interference intensity during the last measurement, and may be greater than the interference intensity during the last measurement, or may also be less than the interference intensity during the last measurement.
  • the difference between the interference intensity and the interference intensity during the last measurement exceeds a specified range.
  • the designated range is determined in advance based on empirical values.
  • the switching request message may carry a code rate for requesting switching, and the switching request information is used to request the receiving device to accept that the sending device uses the code rate to perform channel coding on the data packet to be transmitted.
  • the handover request message may also carry the time point at which the code rate is switched, and when the time point is reached, the sending device and the receiving device use the switched code rate for communication.
  • Step 503 The receiving device accepts that the sending device uses the code rate to perform channel coding on the data packet to be transmitted, and sends a handover response message to the sending device.
  • Step 504 The sending device uses the code rate carried in the handover request message to perform channel coding on the data packet to be transmitted.
  • Step 505 The sending device sends the channel-coded data packet to the receiving device.
  • Step 506 The receiving device decodes the received data packet by using the code rate carried in the handover request message.
  • the sending device after the sending device sends the channel-coded data packet to the receiving device, it can scan the interference intensity of the space where the wireless link is located when the specified period is reached. When the sending device determines that the current interference intensity is less than the interference threshold, it may send a message to the receiving device to switch to the communication mode without channel coding, and the time point for switching to the communication mode without channel coding. Among them, the sending device can send the message of switching to the communication mode without channel coding and the time point of switching to the communication mode without channel coding to the receiving device through the same request message, and when receiving the request message, the receiving device sends the message to the receiving device. Send a reply message.
  • the sending device may respectively send the message of switching to the communication mode without channel coding and the time point of switching to the communication mode without channel coding to the receiving device.
  • the sending device sends a first request for switching to a communication mode without channel coding to the receiving device to the receiving device, and the receiving device sends a first response to the first request to the sending device.
  • the sending device sends to the receiving device a second request carrying a time point for switching to a communication mode without channel coding to the receiving device, and the receiving device sends a second response to the second request to the sending device.
  • the sending device and the receiving device switch to a communication mode without channel coding.
  • the sending device does not perform channel coding on the data packet.
  • FIG. 6 it is one of the schematic diagrams of application scenarios of a short-distance communication method with anti-interference capability provided by an embodiment of this application.
  • both the A device and the B device are Bluetooth devices.
  • a device and B device support classic BT, BLE and broadband Bluetooth technology.
  • a device and B device can establish a wireless link based on the BLE communication protocol. After the BLE wireless link is established between the A device and the B device, it can switch to the wireless link of the broadband Bluetooth communication protocol. Or, the A device and the B device establish a wireless link based on a broadband Bluetooth communication protocol.
  • the A device scans to determine that the interference intensity of the space where the wireless link is located is weak, thereby determining that the code rate of the channel coding should be less than or equal to 2/3, such as 1/2, 1/3, etc. According to the preset priority of the channel coding code rate, the A device selects the code rate 1/2 of the channel coding with the highest priority among several code rates.
  • the A device negotiates with the B device to determine that the channel coding mode is polar coding.
  • the A device performs non-uniform division of each data segment in the data packet to be sent to the B device, and performs channel coding on each code block of each data segment with a code rate of 1/2 and a polar coding method.
  • the A device sends the channel-encoded data packet to the B device.
  • the B device When the B device sends a data packet to the A device, the B device also uses the code rate 1/2 and the polar encoding method to channel-encode the data packet, and sends the channel-encoded data packet to the A device. Or, when device B sends data packets to device A, device B can be used as a new sending device, device A can be used as a new receiving device, and device B and device A can communicate through the short-distance communication with anti-interference capability provided by this application The method re-determines the code rate and channel coding method of the channel coding. The B device uses the newly determined code rate and channel coding method to perform channel coding on the data packet to be sent to the A device, and then sends it to the A device.
  • FIG. 7 it is one of the schematic diagrams of application scenarios of a short-distance communication method with anti-interference capability provided by an embodiment of this application.
  • the scene contains A device, B device, C device, and D device.
  • the A device and the B device establish a wireless link based on the classic BT communication protocol.
  • the B device and the C device establish a wireless link based on the BLE communication protocol.
  • the C device and the D device establish a wireless link based on the broadband Bluetooth communication protocol
  • the A device and the D device establish a wireless link based on the BLE communication protocol
  • the D device monitors the B device.
  • the interference intensity of the space where each wireless link is located can be determined through a preset interference intensity threshold. For example, according to a preset interference intensity threshold, it is determined that the interference intensity of the space where the wireless link between the A device and the B device is located is very weak, and the interference intensity of the space where the wireless link between the B device and the C device is located is strong; C The interference intensity in the space where the wireless link between the device and the D device is located is very strong; the interference intensity in the space where the wireless link between the D device and the A device is located is weak, and the wireless link between the D device and the B device is located The intensity of interference in the space.
  • the data packet may not be encoded.
  • code rate 2/3 can be used; when transmitting data packets between C device and D device, bit rate 1/2 can be used; when A device and D device transmit data packets, The data packet can be encoded at a code rate of 5/6.
  • the D device Through the wireless link with the A device, the D device obtains the time point of the data packet transmission and reception between the device and the A device, the encryption method of the data packet, the frequency hopping method, the channel encoding method of the data packet and the bit rate of the channel encoding, etc.
  • Link establishment parameter For example, device D transmits data packets with device A, and determines that device B and device A transmit data packets at time point k, and does not encode the data packet, then device D monitors the data packet sent by device B to device A at time point k .
  • the D device monitors the performance of the B device Poor. Then the D device can negotiate with the A device, and let the A device initiate a communication request using the channel coding to the B device, which may include the desired channel coding method and the code rate of the channel coding. And inform the A device of the channel coding method and the code rate of the channel coding. For example, device D informs device A to use polar encoding with a code rate of 3/4 when transmitting data packets with device B. Then the A device sends a request message to the B device, and after receiving the consent response message from the B device, it adopts polar coding and performs channel coding on the data packet at a code rate of 3/4.
  • the D device obtains the data packet receiving and sending time point between the B device and the C device, the encryption method of the data packet, the frequency hopping method, the channel coding method of the data packet and the bit rate of the channel coding, etc. Establish parameters. For example, the D device transmits data packets with the C device, and determines that the B device and the C device transmit the data packet at the time point m, and the channel coding mode is LDCH coding with a code rate of 2/3. Then the D device monitors the data packet sent by the B device to the C device at the time point m, and uses the LDCH encoding method and 2/3 code rate to decode the data packet to obtain valid data.
  • the interference intensity between the B device and the D device is medium, the 2/3 code rate has met the transmission requirements under this interference, so the D device does not need to negotiate with the C device, and the C device can initiate channel coding to the B device. Rate change request.
  • FIG. 8 it is one of the schematic diagrams of application scenarios of a short-distance communication method with anti-interference capability provided by an embodiment of this application. Assume that the scene includes A device, B0 device, B1 device, C0 device, C1 device, C2 device, and C3 device.
  • the B0 device and the B1 device are the receiving devices of the broadcast signal of the A device; the C0 device and the C1 device are the receiving devices of the broadcast signal of the B0 device; the C2 device and the C3 device are the receiving devices of the broadcast signal of the B1 device.
  • the A device scans the interference intensity of its own environment and determines that the interference intensity is less than the first preset threshold. Then when the A device broadcasts the data packet to the B0 device and B1 device, the data packet can be channel-encoded at a code rate of 5/6.
  • the B0 device scans the interference intensity of its own environment and determines that the interference intensity is greater than the first preset threshold and less than the second preset threshold. Then, when the B0 device broadcasts data packets to the C0 device and the C1 device, the data packet can be channel-encoded at a code rate of 2/3.
  • the B1 device scans the interference intensity of its own environment and determines that the interference intensity is greater than the second preset threshold.
  • the B1 device broadcasts the data packet to the C2 device and the C3 device, the data packet can be channel-encoded at a rate of 1/2.
  • an embodiment of the present application further provides a terminal, and the terminal may be the sending device or the receiving device in the embodiment of the present application.
  • the terminal includes a processor 900, a memory 901, and a transceiver 902;
  • the processor 900 is responsible for managing the bus architecture and general processing, and the memory 901 can store data used by the processor 900 when performing operations.
  • the transceiver 902 is used to receive and send data packets under the control of the processor 900.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 900 and various circuits of the memory represented by the memory 901 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the processor 900 is responsible for managing the bus architecture and general processing, and the memory 901 can store data used by the processor 900 when performing operations.
  • the process disclosed in the embodiment of the present invention may be applied to the processor 900 or implemented by the processor 900.
  • each step of the communication process can be completed by the integrated logic circuit of the hardware in the processing 900 or the instructions in the form of software.
  • the processor 900 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and may implement or execute the embodiments of the present invention.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly embodied as executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory 901, and the processor 900 reads the information in the memory 901, and completes the steps of the communication process in combination with its hardware.
  • the processor 900 is configured to read a program in the memory 901 and execute any steps of the short-distance communication method with anti-interference capability in the embodiments of the present application.
  • a network device of the present application which may be a sending device or a receiving device in an embodiment of the present application.
  • the network device includes a processor 1000, a memory 1001, and a communication interface 1002.
  • the processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1001 can store data used by the processor 1000 when performing operations.
  • the transceiver communication interface 1002 is used to receive and send data under the control of the processor 1000 for data communication with the memory 1001.
  • the processor 1000 may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.
  • the processor 1000 may further include a hardware chip.
  • the above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • the above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.
  • the memory 11001 may include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program codes.
  • the processor 1000, the memory 1001, and the communication interface 1002 are connected to each other.
  • the processor 1000, the memory 1001, and the communication interface 1002 may be connected to each other through a bus 1003; the bus 1003 may be a peripheral component interconnect (PCI) bus or an extended industry Standard structure (extended industry standard architecture, EISA) bus, etc.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and so on. For ease of representation, only one thick line is used to represent in FIG. 10, but it does not mean that there is only one bus or one type of bus.
  • the processor 1000 is configured to read a program in the memory 1001 and execute any steps of the short-distance communication method with anti-interference capability in the embodiments of the present application.
  • the present application also provides a communication system, which includes the aforementioned one or more sending devices, and, one or more receiving devices.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the embodiments of the present application also provide a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the short-distance communication method with anti-interference ability described in any of the foregoing method embodiments is implemented.
  • the embodiments of the present application also provide a computer program product, which, when executed by a computer, implements the short-distance communication method with anti-interference capability described in any of the foregoing method embodiments.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (for example, a solid state disk (Solid State Disk, SSD)) etc.
  • An embodiment of the present application also provides a processing device, including a processor and an interface; the processor is configured to execute the short-distance communication method with anti-interference capability described in any of the foregoing method embodiments.
  • the foregoing processing device may be a chip, and the processor may be implemented by hardware or software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, At this time, the processor may be a general-purpose processor, which is realized by reading the software code stored in the memory, and the memory may be integrated in the processor, may be located outside the processor, and exist independently.
  • one embodiment or “an embodiment” mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present application. Therefore, the appearances of "in one embodiment” or “in an embodiment” in various places throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application. The implementation process constitutes any limitation.
  • system and "network” in this article are often used interchangeably in this article.
  • the term “and/or” in this article is only an association relationship that describes the associated objects, which means that there can be three kinds of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations.
  • the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are only illustrative, for example, the division of units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated. To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present application.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another.
  • the storage medium may be any available medium that can be accessed by a computer.
  • computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or can be used to carry or store instructions or data in the form of structure
  • Any connection can suitably become a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave
  • coaxial cable , Fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, wireless and microwave are included in the fixing of the media.
  • Disk and disc include compact discs (CD), laser discs, optical discs, digital versatile discs (DVD), floppy discs and Blu-ray discs.
  • Discs usually copy data magnetically, while discs The laser is used to optically copy the data. The above combination should also be included in the protection scope of the computer-readable medium.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de communication à courte portée avec une capacité anti-interférence, qui sont utilisés pour améliorer la capacité anti-interférence d'un dispositif de communication, et concerne le domaine technique des communications sans fil. Dans le procédé, un dispositif de transmission et un dispositif de réception déterminent un taux de code de codage de canal en fonction de l'intensité d'interférence d'un espace dans lequel se trouve une liaison sans fil, et négocient un mode de codage de canal avec le dispositif de réception; le mode de codage de canal peut être des codes de blocs segmentés de manière non uniforme. Lors de la transmission d'un paquet de données au dispositif de réception, le dispositif de transmission effectue un codage de canal sur le paquet de données en utilisant des codes de blocs segmentés de manière non uniforme et un taux de code. Sur la base du schéma selon l'invention, le taux de code du codage de canal peut être sélectionné en fonction de l'intensité d'interférence de l'espace où se trouve la liaison sans fil lorsque le paquet de données est transmis par le dispositif de transmission et le dispositif de réception, et le mode de codage de canal négocié et le taux de code déterminé sont utilisés pour coder le paquet de données à transmettre, de sorte que le gain et la capacité anti-interférence de la liaison sans fil soient établis sur la base d'un protocole de communication à courte portée.
PCT/CN2019/121729 2019-11-28 2019-11-28 Procédé et dispositif de communication à courte portée avec capacité anti-interférence WO2021102843A1 (fr)

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CN201980102417.XA CN114731501A (zh) 2019-11-28 2019-11-28 一种具有抗干扰能力的短距离通信方法和装置

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