WO2022198463A1 - 一种通信方法与装置 - Google Patents
一种通信方法与装置 Download PDFInfo
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- WO2022198463A1 WO2022198463A1 PCT/CN2021/082484 CN2021082484W WO2022198463A1 WO 2022198463 A1 WO2022198463 A1 WO 2022198463A1 CN 2021082484 W CN2021082484 W CN 2021082484W WO 2022198463 A1 WO2022198463 A1 WO 2022198463A1
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- H—ELECTRICITY
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Definitions
- the present application relates to the field of communication technologies, and in particular, to a communication method and apparatus.
- Short-range communication technology plays an important role in people's daily life. There is a demand for short-range communication in the fields of smart terminals, smart homes, smart manufacturing, and smart cars.
- Common short-range communication technologies include, for example, Bluetooth (bluetooth) technology, wireless fidelity (wireless fidelity, Wi-Fi) technology, and the like.
- a single logical channel in a short-distance communication system corresponds to only one service.
- logical channel 1 corresponds to service 1
- logical channel 2 corresponds to service 2.
- different logical channels correspond to different transmission resources, for example, logical channel 1 corresponds to transmission resource 1, logical channel 2 corresponds to transmission resource 2, and transmission resource 1 and transmission resource 2 are different.
- the service 1 and the service 2 are transmitted on the logical channel 1 and the logical channel 2 respectively, that is, the service 1 is transmitted on the transmission resource 1, and the service 2 is transmitted on the transmission resource 2.
- This solution that a single logical channel corresponds to a single service will cause data to be unable to be sent in time.
- the sender needs to send the data of service 2. Since service 2 must be sent on the transmission resource 2 corresponding to the logical channel 2, if the transmission resource 2 has not yet been sent If it arrives, it needs to wait for transmission resource 2 to arrive before sending, which will cause a long transmission delay.
- the purpose of this application is to provide a communication method and apparatus for reducing transmission delay.
- a communication method is provided.
- the method can be applied to the first device.
- the method includes: configuring a first logical channel, where the first logical channel corresponds to a first service and a second service; sending first information to a second device on the first logical channel, where the first information includes second data, wherein the second data includes data of the second service, and the first service is different from the second service.
- the service types of the first service and the second service are different, or the first service and the second service correspond to different protocols or protocol stacks.
- one logical channel may correspond to at least two services, and this document takes corresponding two services as an example, for example, the first logical channel corresponds to the first service and the second service. That is, the first logical channel can be used to transmit data of the first service, and can also be used to transmit data of the second service.
- the embodiments of the present application can improve data transmission efficiency and reduce data transmission delay. For example, since the first logical channel corresponds to the first service and the second service, when the sender needs to send the data of the second service, it can be sent on the first logical channel of the first service without waiting for the transmission resources corresponding to the second service. arrival, reducing the transmission delay.
- the first service and the second service correspond to different protocol stacks, for example, the data of the first service comes from the first protocol stack; the data of the second service comes from the second protocol stack;
- the protocols supported by the first protocol stack and the second protocol stack are different. That is to say, a logical channel can correspond to two services, and the protocol stacks corresponding to the two services are different. In other words, when the data of the first protocol stack needs to be sent, the first logical channel corresponding to the second protocol stack can be used for sending, thereby reducing the usage of data transmission.
- the first protocol stack is used for audio and video data transmission
- the second protocol stack is used for audio and video transmission control
- the first protocol stack is used for audio and video transmission control
- the second protocol stack is used for audio and video transmission control.
- the stack is used for audio and video data transmission.
- the first protocol stack and the second protocol stack may also be protocol stacks with other functions, which are not limited in this embodiment of the present application.
- the first service and the second service correspond to different protocols, for example, the first service corresponds to the first protocol; the second service corresponds to the second protocol; Video distribution transport protocol (audio/video distribution transport protocol, AVDTP).
- the second protocol is the audio/video control transport protocol (AVCTP).
- the service types of the first service and the second service are different, for example, the data of the first service includes audio and video data, and the data of the second service includes audio and video control information.
- the data of the first service is audio data of a song
- the data of the second service is control information used to control the playback of the song, such as pausing playback, switching to the next song, and the like.
- the first information further includes channel identification information and/or protocol indication information, where the channel identification information is used to indicate the first logical channel; the protocol indication information is used to indicate the first logical channel.
- the protocol supported by the second protocol stack, the second protocol stack corresponds to the second service.
- a single logical channel corresponds to only one service, that is, a logical channel and a service have a one-to-one correspondence.
- the sender only needs to carry the logical channel identifier CID1 of logical channel 1 in the information sent on logical channel 1.
- the receiver After the receiver receives the information, it can determine the information according to the CID1 carried in the information. Include business 1 data.
- the information sent by the sending end on the first logical channel may include protocol indication information, and the information used to indicate that the sent information includes the protocol indication information Data for the indicated service.
- the receiving end may determine that the received information includes data of the second service. In this way, the receiving end can determine which service data is included in the received information.
- the second data is carried in a payload field in the first information, or other fields other than the payload field.
- other fields are ACK fields, reserved fields or other custom fields in the first information.
- the second data is carried in the payload field of the first information, and the first information does not include the data of the first service.
- the load field in the information sent on the first logical channel can be used to carry data of the first service or data of the second service.
- the payload field carries the data of the first service
- the payload field carries the data of the second service.
- the second data (including the data of the second service) is carried in the load field of the first information, and it can be understood that the load field is occupied by the data of the second service and does not include the data of the first service, that is, the first logical channel Preempted by the data of the second service. Therefore, the first mode is a mode in which the data of the second service preempts the first logical channel. This preemption method can ensure the timely and complete transmission of the data of the second service, and reduce the transmission delay of the data of the second service.
- the first information further includes data of the first service, the data of the first service is carried in the payload field of the first information, and the second data is carried in the first information fields other than the payload field described in .
- the other fields are ACK fields, reserved fields or other custom fields in the first information.
- the first information includes both the data of the first service and the data of the second service.
- the payload field in the first information carries the data of the first service, and the other fields carry the second data, that is, the data of the second service. Therefore, the second way can be understood that the first information is mainly used to send the data of the first service, and the second data is carried on the first information to be sent. In this way, the data of the first service and the data of the second service can be sent through one piece of information, which saves signaling overhead and has high efficiency.
- the method before configuring the first logical channel, further includes: sending a configuration negotiation request to the second device, where the configuration negotiation request is used to request to negotiate a configuration negotiation request corresponding to the first service.
- the data of the second service is transmitted on the first logical channel; wherein, the configuration negotiation request message includes protocol indication information, and the protocol indication information is used to indicate the protocol supported by the second protocol stack; the second protocol The stack corresponds to the second service; and a configuration negotiation response from the second device is received, where the configuration negotiation response is used to indicate that data of the second service is allowed to be transmitted on the first logical channel.
- the first logical channel may correspond to two services, that is, the first service and the second service.
- the embodiments of the present application can improve data transmission efficiency and reduce data transmission delay.
- the first service is a streaming media service
- the second service is a service for remotely controlling the playback process of the streaming media service.
- streaming media services such as audio and video services.
- the second service may be a service for remotely controlling the first service (eg, audio and video service).
- the "remote” here can be understood as controlling the first service on the opposite end (ie, the receiving end).
- the playing process at least includes at least one of the following: stop, play, fast-forward, fast-rewind, switch to the previous program, or switch to the next program programme.
- the priority of the second service is not lower than the priority of the first service
- the second service is a delay-sensitive service
- the second service is a service that can adopt a preemptive transmission mode
- the second service is a service for remotely controlling the first service.
- one logical channel can correspond to two services, and the two services have different priorities, or one of the services is a delay-sensitive service, or one of the services is a service that can adopt the preemptive transmission mode. , or, where one of the services is a service for remotely controlling the other.
- the embodiments of the present application can improve data transmission efficiency and reduce data transmission delay.
- the first device includes a network, a transport and application layer, a data link layer, and a physical layer
- the first logical channel is a first logical channel in the data link layer
- Sending the first information to the second device on the first logical channel includes: the data link layer receiving data from the first service of the first protocol stack in the network, transport and application layers , receive the data of the second service from the second protocol stack in the network, transmission and application layers; the data link layer generates the first information and transmits it to the physical layer, the first information
- One piece of information is the first protocol data unit PDU, the header of the first information contains channel identification information and/or protocol indication information, the channel identification information is used to indicate the first logical channel; the protocol indication information is used for To indicate the protocol supported by the second protocol stack, the second protocol corresponds to the second service; the load field, ACK field, reserved field or other custom field of the first information contains the information of the second service.
- the physical layer sends the first information to the second device on the first physical transmission resource
- the data transmission process between the layers is: when the network in the first device, the first protocol stack in the transmission and application layer generates the data of the service 1, the network, transmission and application layer sends the data of service 1 to the data link layer.
- the data link layer determines that the first protocol stack corresponds to the logical channel 1, and the application layer sends the data of the service 1 to the second device on the transmission resource 1 corresponding to the logical channel 1.
- the physical layer in the second device receives the information, it is sent to the data link layer in the second device, and the data link layer determines the logical channel 1, and since there is a one-to-one correspondence between the logical channel and the service, and Logical channel 1 corresponds to service 1, so it can be determined that the received information includes data of service 1, so the data link layer sends the data of service 1 to the first protocol stack in the network, transmission and application layers for processing.
- the first logical channel corresponds to the first service and the second service. Therefore, after the data link layer receives the data of the first service of the first protocol stack in the network, transmission and application layers, and the data of the second service of the second protocol stack in the network, transmission and application layers, The data link layer generates the first information and transmits it to the physical layer.
- the first information may include the data of the second service, and optionally, the data of the first service; then the physical layer communicates with the first service.
- the first information is sent to the second device on the first physical transmission resource corresponding to the logical channel. That is, the data of the second service is transmitted on the first logical channel, which reduces the transmission delay of the data of the second service.
- a communication method is also provided.
- the method is applied to the second device.
- the method includes: receiving first information from a first device on a first logical channel, where the first logical channel corresponds to a first service and a second service, the first information includes second data, wherein the The second data includes data of the second service, and the first service is different from the second service; acquiring the second data in the first information.
- acquiring the second data in the first information includes:
- the data of the first service comes from the first protocol stack; the data of the second service comes from the second protocol stack; the first protocol stack and the data supported by the second protocol stack The protocol is different.
- the first protocol stack is used for audio and video data transmission
- the second protocol stack is used for audio and video transmission control; or, the first protocol stack is used for audio and video transmission control, so The second protocol stack is used for audio and video data transmission.
- the data of the first service includes audio and video data
- the data of the second service includes audio and video control information
- the first information further includes channel identification information and/or protocol indication information, where the channel identification information is used to indicate the first logical channel; the protocol indication information is used to indicate the first logical channel.
- the second data is carried in a payload field in the first information, and the first information does not contain the data of the first service.
- the first information further includes data of the first service
- the data of the first service is carried in a load field in the first information
- the second data is carried in Fields other than the load field in the first information.
- the other fields are ACK fields, reserved fields, or other custom fields in the first information.
- the method before receiving the first information from the first device on the first logical channel, the method further includes:
- the negotiation request message includes protocol indication information, where the protocol indication information is used to indicate a protocol supported by the second protocol stack, and the second protocol stack corresponds to the second service;
- a configuration negotiation response is sent to the first device, where the configuration negotiation response is used to indicate that data of the second service is allowed to be transmitted on the first logical channel.
- the first service is a streaming media service
- the second service is a service for remotely controlling the playback process of the streaming media service
- the playback process at least includes at least one of the following:
- the priority of the second service is not lower than the priority of the first service
- the second service is a delay-sensitive service
- the second service is a service that can adopt a preemptive transmission mode
- the second service is a service for remotely controlling the first service.
- the second device includes a network, a transmission and application layer, a data link layer, and a physical layer; receiving the first information from the first device on the first logical channel includes:
- the physical layer receives the first information and sends the first information to the data link layer;
- the first information is a first protocol data unit PDU;
- the packet header of the first information includes channel identification information and/or protocol indication information, the channel identification information is used to indicate the first logical channel;
- the protocol indication information is used to indicate the protocol supported by the second protocol stack, the second protocol stack and the second business correspondence;
- the second data is contained in the load field, acknowledgment ACK field, reserved field or other custom fields of the first information;
- the sent data link layer sends the second data to the second protocol stack in the network, transport and application layers.
- a communication device includes:
- a processing unit configured to configure a first logical channel, where the first logical channel corresponds to the first service and the second service;
- a communication unit configured to send first information to a second device on the first logical channel, where the first information includes second data, wherein the second data includes data of the second service, so The first service is different from the second service.
- the data of the first service comes from the first protocol stack; the data of the second service comes from the second protocol stack; the first protocol stack and the data supported by the second protocol stack The protocol is different.
- the first protocol stack is used for audio and video data transmission
- the second protocol stack is used for audio and video transmission control; or, the first protocol stack is used for audio and video transmission control, so The second protocol stack is used for audio and video data transmission.
- the data of the first service includes audio and video data
- the data of the second service includes audio and video control information
- the first information further includes channel identification information and/or protocol indication information, where the channel identification information is used to indicate the first logical channel; the protocol indication information is used to indicate the first logical channel.
- the second data is carried in a payload field in the first information, and the first information does not contain the data of the first service.
- the first information further includes data of the first service
- the data of the first service is carried in a load field in the first information
- the second data is carried in Fields other than the load field in the first information.
- the other fields are ACK fields, reserved fields, or other custom fields in the first information.
- the method before configuring the first logical channel, the method further includes:
- the request message includes protocol indication information, where the protocol indication information is used to indicate a protocol supported by the second protocol stack, and the second protocol stack corresponds to the second service;
- a configuration negotiation response from the second device is received, where the configuration negotiation response is used to indicate that data of the second service is allowed to be transmitted on the first logical channel.
- the first service is a streaming media service
- the second service is a service for remotely controlling the playback process of the streaming media service
- the playback process at least includes at least one of the following:
- the priority of the second service is not lower than the priority of the first service
- the second service is a delay-sensitive service
- the second service is a service that can adopt a preemptive transmission mode
- the second service is a service for remotely controlling the first service.
- the first device includes a network, a transport and application layer, a data link layer, and a physical layer
- the first logical channel is a first logical channel in the data link layer
- Sending first information to the second device on the first logical channel includes:
- the data link layer receives data from the first service of the first protocol stack in the network, transport and application layers, and receives the second data from the second protocol stack in the network, transport and application layers. business data;
- the data link layer generates the first information and transmits it to the physical layer, the first information is a first protocol data unit PDU, and the packet header of the first information includes channel identification information and/or protocol indication information, the channel identification information is used to indicate the first logical channel; the protocol indication information is used to indicate the protocol supported by the second protocol stack; the second protocol stack corresponds to the second service; the first The load field of a message, the ACK field in the first message, the reserved field or other custom fields contain the data of the second service; the physical layer is in the first physical transmission resource corresponding to the first logical channel sending the first information to the second device.
- a communication device includes:
- a communication unit configured to receive first information from a first device on a first logical channel, where the first logical channel corresponds to a first service and a second service, and the first information includes second data, wherein the the second data includes data of the second service, and the first service is different from the second service;
- a processing unit configured to acquire the second data in the first information.
- acquiring the second data in the first information includes:
- the data of the first service comes from the first protocol stack; the data of the second service comes from the second protocol stack; the first protocol stack and the data supported by the second protocol stack The protocol is different.
- the first protocol stack is used for audio and video data transmission
- the second protocol stack is used for audio and video transmission control; or, the first protocol stack is used for audio and video transmission control, so The second protocol stack is used for audio and video data transmission.
- the data of the first service includes audio and video data
- the data of the second service includes audio and video control information
- the first information further includes channel identification information and/or protocol indication information, where the channel identification information is used to indicate the first logical channel; the protocol indication information is used to indicate the first logical channel.
- the second data is carried in a payload field in the first information, and the first information does not contain the data of the first service.
- the first information further includes data of the first service
- the data of the first service is carried in a load field in the first information
- the second data is carried in Fields other than the load field in the first information.
- the other fields are ACK fields, reserved fields, or other custom fields in the first information.
- the method before receiving the first information from the first device on the first logical channel, the method further includes:
- the negotiation request message includes protocol indication information, where the protocol indication information is used to indicate a protocol supported by the second protocol stack, and the second protocol stack corresponds to the second service;
- a configuration negotiation response is sent to the first device, where the configuration negotiation response is used to indicate that data of the second service is allowed to be transmitted on the first logical channel.
- the first service is a streaming media service
- the second service is a service for remotely controlling the playback process of the streaming media service
- the playback process at least includes at least one of the following:
- the priority of the second service is not lower than the priority of the first service
- the second service is a delay-sensitive service
- the second service is a service that can adopt a preemptive transmission mode
- the second service is a service for remotely controlling the first service.
- the second device includes a network, a transmission and application layer, a data link layer, and a physical layer; receiving the first information from the first device on the first logical channel includes:
- the physical layer receives the first information and sends the first information to the data link layer;
- the first information is a unit PDU of the first protocol data;
- the packet header of the first information contains a channel identifier information and/or protocol indication information, the channel identification information is used to indicate the first logical channel;
- the protocol indication information is used to indicate the protocol supported by the second protocol stack, the second protocol stack and the first logical channel Correspondence to two services;
- the second data is contained in the load field, acknowledgment ACK field, reserved field or other custom fields of the first information;
- the sent data link layer sends the second data to the second protocol stack in the network, transport and application layers.
- a communication device including a processor and a memory; the memory stores program instructions, which, when the program instructions are executed, cause the communication device to execute the method provided in the first aspect.
- the communication device may be a first device or a device capable of supporting the functions required by the first device to implement the method provided in the first aspect, such as a chip system.
- the communication device may be a terminal device or a part of a component (such as a chip) within the terminal device.
- the terminal device may be, for example, a smart mobile terminal, a smart home device, a smart car, a smart wearable device, and the like.
- the intelligent mobile terminal is such as a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), and the like.
- Smart home devices such as smart refrigerators, smart washing machines, smart TVs, speakers, etc.
- Smart car wearables such as smart headphones, smart glasses, smart clothing or shoes, etc.
- a communication device including a processor and a memory; the memory stores program instructions, which, when the program instructions are executed, cause the communication device to perform the method provided in the second aspect.
- the communication device may be a second device or a device capable of supporting the functions required by the second device to implement the method provided in the second aspect, such as a chip system.
- the communication device may be a terminal device or a part of a component (such as a chip) within the terminal device.
- the terminal device may be, for example, a smart mobile terminal, a smart home device, a smart car, a smart wearable device, and the like.
- the intelligent mobile terminal is such as a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), and the like.
- Smart home devices such as smart refrigerators, smart washing machines, smart TVs, speakers, etc.
- Smart car wearables such as smart headphones, smart glasses, smart clothing or shoes, etc.
- a communication system including:
- a first device for implementing the communication method provided by the above-mentioned first aspect and,
- a second apparatus for implementing the communication method provided by the above-mentioned second aspect is a second apparatus for implementing the communication method provided by the above-mentioned second aspect.
- a computer-readable storage medium comprising a computer program, when the computer program runs on a computer, the computer causes the computer to execute the method provided in the first aspect.
- a computer-readable storage medium comprising a computer program, which when the computer program is run on a computer, causes the computer to execute the method provided in the second aspect above.
- a computer program product comprising instructions, which when executed on a computer, cause the computer to perform the method provided in the first aspect above.
- a computer program product comprising instructions which, when executed on a computer, cause the computer to perform the method as provided in the second aspect above.
- FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
- FIG. 2A is a schematic diagram of an application scenario provided by an embodiment of the present application.
- FIG. 2B is a schematic diagram of another application scenario provided by an embodiment of the present application.
- FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application.
- FIG. 4 is a schematic diagram of a frame structure of first information provided by an embodiment of the present application.
- FIG. 5 is a schematic diagram of a protocol layer in a communication system provided by an embodiment of the present application.
- FIG. 6 is another schematic flowchart of a communication method provided by an embodiment of the present application.
- FIG. 7 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
- FIG. 8 is another schematic structural diagram of a communication device according to an embodiment of the present application.
- FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
- the communication system may be a short-range communication system.
- the communication system may also be used in other communication systems, such as a fourth generation mobile communication technology (the 4th generation, 4G) system, such as an LTE system, or may be applied in a 5G system, such as an NR system, or may also be applied for next-generation mobile communication systems (such as 6G systems).
- 4G fourth generation mobile communication technology
- LTE Long Term Evolution
- 5G system such as an NR system
- next-generation mobile communication systems such as 6G systems
- the first device may be a terminal device, and the second device may be a network device; or, the first device is a network device, and the second device is a terminal device.
- Terminal equipment including devices that provide users with voice and/or data connectivity, specifically, devices that provide users with voice, or devices that provide users with data connectivity, or devices that provide users with voice and data connectivity equipment.
- devices that provide users with voice and/or data connectivity specifically, devices that provide users with voice, or devices that provide users with data connectivity, or devices that provide users with voice and data connectivity equipment.
- it may include a handheld device with wireless connectivity, or a processing device connected to a wireless modem.
- the terminal equipment can communicate with the core network via a radio access network (RAN), exchange voice or data with the RAN, or exchange voice and data with the RAN.
- RAN radio access network
- the terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, vehicle to everything (V2X) terminal equipment , machine-to-machine/machine-type communications (M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscription unit (subscriber unit), subscription station (subscriber) station), mobile station (mobile station), remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user Agent (user agent), or user equipment (user device), etc.
- UE user equipment
- D2D device-to-device
- V2X vehicle to everything
- M2M/MTC machine-to-machine/machine-type communications
- IoT Internet of things
- subscription unit subscriber unit
- subscription station subscriber
- mobile station mobile station
- remote station remote station
- access point access point
- AP remote terminal
- remote terminal remote terminal
- access terminal
- these may include mobile telephones (or "cellular" telephones), computers with mobile terminal equipment, portable, pocket-sized, hand-held, computer-embedded mobile devices, and the like.
- mobile telephones or "cellular" telephones
- PCS personal communication service
- SIP session initiation protocol
- WLL wireless local loop
- PDA personal digital assistant
- constrained devices such as devices with lower power consumption, or devices with limited storage capacity, or devices with limited computing power, etc.
- it includes information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), and laser scanners.
- RFID radio frequency identification
- GPS global positioning system
- the terminal device may also be a wearable device.
- Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. Wait.
- a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
- wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
- the various terminal devices described above if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be considered as on-board terminal equipment.
- the on-board terminal equipment is also called on-board unit (OBU). ).
- the terminal device may further include a relay.
- a relay any device capable of data communication with the base station can be regarded as a terminal device.
- a network device including, for example, an access network (AN) device, such as a base station (eg, an access point), may refer to a device in an access network that communicates with a wireless terminal device over the air interface through one or more cells, or
- AN access network
- a network device in a vehicle-to-everything (V2X) technology is a roadside unit (RSU).
- the base station may be used to convert received air frames to and from IP packets, acting as a router between the terminal equipment and the rest of the access network, which may include the IP network.
- the RSU can be a fixed infrastructure entity supporting V2X applications and can exchange messages with other entities supporting V2X applications.
- the network device can also coordinate the attribute management of the air interface.
- the network equipment may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in the LTE system or long term evolution-advanced (LTE-A), or may also include fifth generation mobile
- NodeB or eNB or e-NodeB, evolutional Node B in the LTE system or long term evolution-advanced (LTE-A)
- LTE-A long term evolution-advanced
- the next generation node B (gNB) in the communication technology (the 5th generation, 5G) NR system (also referred to as the NR system) may also include a cloud radio access network (Cloud RAN) system
- a centralized unit (centralized unit, CU) and a distributed unit (distributed unit, DU) in the embodiments of the present application are not limited.
- the network equipment may also include core network equipment, for example, the core network equipment includes an access and mobility management function (AMF), a session management function (SMF) or a user plane function (user plane) in the 5G system function, UPF), etc., or include a mobility management entity (mobility management entity, MME) and the like in the 4G system.
- AMF access and mobility management function
- SMF session management function
- UPF user plane function
- MME mobility management entity
- the communication system shown in FIG. 1 may also be a short-range communication system, that is, a connection between the first device and the second device through a certain short-range communication technology.
- the short-range communication technology may include, but is not limited to, Bluetooth (bluetooth) technology, wireless fidelity (Wi-Fi) technology, near field communication (NFC) technology, Wi-Fi Aware technology, general short-range communication technology, etc.
- Short-distance communication has a large number of applications in file transmission, remote control, screen projection, and perception of surrounding devices. Examples of several short-range communication techniques are listed below.
- Bluetooth A radio technology that supports short-range communication between devices, enabling wireless information exchange among many devices, including mobile phones, wireless headsets, notebook computers, and related peripherals. Using "Bluetooth" technology can effectively simplify the communication between mobile communication terminal devices, and can also successfully simplify the communication between the device and the Internet, so that data transmission becomes more rapid and efficient, and the road for wireless communication is widened.
- Wireless fidelity Also known as wireless local area networks (WLAN) direct connection or Wi-Fi Direct, it is one of the Wi-Fi protocol suites that enables easy communication between devices. Connect to each other without intermediary wireless access points. Uses ranging from web browsing to file transfers and communicating with multiple devices simultaneously take full advantage of the speed benefits of Wi-Fi. Devices conforming to this standard can be easily interconnected even from different manufacturers.
- WLAN wireless local area networks
- Wi-Fi Aware technology responsible for the perception and discovery part of Wi-Fi technology, it can help Wi-Fi devices perceive surrounding services, such as surrounding devices, and then realize point-to-point between two devices in close proximity through Wi-Fi Aware (Peer to Peer, P2P) message interaction. Since WIFI-Aware can sense surrounding devices, it can realize various functions, such as sensing nearby people and establishing connections, then adding friends, playing the same game, etc.; or, discovering surrounding devices, realizing photo sharing or location sharing, and more; or securely send files to a printer without access to a network (such as cellular or wireless), and more.
- a network such as cellular or wireless
- the following description is mainly made by taking the communication system shown in FIG. 1 as an example of a short-distance communication system.
- the communication system includes a first device and a second device.
- the first device may be any device with a short-range communication function.
- the first device may be a mobile terminal, such as a mobile phone, a tablet computer, a vehicle-mounted device (or called a vehicle-mounted terminal), an augmented reality (AR)/virtual reality (VR) device, a notebook computer, a super mobile Personal computer (ultra-mobile personal computer, UMPC), netbook, personal digital assistant (personal digital assistant, PDA) and other equipment, also can be mouse, keyboard, wearable equipment (glasses, gloves, watches, bracelets, clothing and shoes etc.), headphones, etc.
- AR augmented reality
- VR virtual reality
- PDA personal digital assistant
- the device for implementing the function of the first device may be the first device, or may be a device capable of supporting the first device to implement the function, such as a chip system, and the device may be installed in the first device .
- the chip system may be composed of chips, or may include chips and other discrete devices.
- the device for realizing the function of the first device is the first device.
- the second device may be any device with short-range communication capabilities.
- the first device and the second device can establish a connection through this short-range communication technology.
- the second device and the first device may be the same or different.
- the second device may be a mobile terminal, such as a mobile phone, a tablet computer, a vehicle-mounted device (or called a vehicle-mounted terminal), an augmented reality (AR)/virtual reality (VR) device, a notebook computer, a super mobile Personal computer (ultra-mobile personal computer, UMPC), netbook, personal digital assistant (personal digital assistant, PDA) and other devices, but also mouse, keyboard, wearable devices (glasses, gloves, watches, bracelets, clothing and shoes) etc.), headphones, etc.
- the device for implementing the function of the second device may be the second device, or may be a device capable of supporting the second device to implement the function, such as a chip system, and the device may be installed in the second device .
- the chip system may be composed of chips, or may include chips and other discrete devices.
- the device for realizing the function of the second device is the second device.
- the second device may be a service provider, configured to provide a service to the first device.
- a service provider configured to provide a service to the first device.
- the first device is a service receiving end, configured to receive and display (eg, play, display, etc.) the service from the second device.
- the first device is a service provider
- the second device is a service receiver.
- the first device is a service provider
- the second device is a service receiver
- the first device is transformed into a service receiver
- the second device is transformed into a service provider.
- the service provided by the first device as the service provider may be different from the service provided by the second device as the service provider.
- the first device is an earphone (or a speaker), and the second device is an audio/video playback device (such as a mobile phone).
- An exemplary scenario is that the user establishes a short-range communication connection between the second device (ie, the mobile phone) and the first device (ie, the headset). The user turns on the music playback function on the mobile phone, and the mobile phone starts to play music. Since the mobile phone is connected to the earphone, the mobile phone sends the audio signal corresponding to the music to the earphone. The earphone is receiving the audio signal sent by the mobile phone, and playing the audio signal.
- the first device ie, the earphone
- the service receiving end receives data of the first service provided by the second device (ie, the mobile phone), and the first service is the audio signal of the music.
- the user can also control the mobile phone through the headset. For example, if the user wants to pause the music, he can enter the pause operation on the headset.
- the headset detects a pause operation triggered on the headset, it sends a pause command to the mobile phone to control the mobile phone to pause music playback.
- the first device ie the headset
- the second device ie the mobile phone
- the data exchange of the first service that is, the audio signal
- the data exchange of the second service such as a pause command
- the first device is a wearable device (such as a watch or a wristband), and the second device is a mobile phone.
- the second device ie, the mobile phone
- the first device ie, the bracelet
- the service receiving end receives data of the first service provided by the second device (ie, the mobile phone), and the data of the first service is the incoming call information or the new message.
- the user can perform operations on the bracelet, such as answering an incoming call, hanging up a call, viewing, deleting or replying to the new message.
- the bracelet detects that the user has triggered the operation of hanging up the call on the bracelet, it sends a hanging up instruction to the mobile phone.
- the first device ie the wristband
- the service provider provides data of the second service to the second device (ie the mobile phone), and the data of the second service is the hang-up instruction.
- the data exchange of the first service ie, incoming call information, new message
- the data exchange of the second service such as hang up command, answer command
- FIG. 2A and FIG. 2B enumerate two possible application scenarios provided by the embodiments of the present application, but the embodiments of the present application are not limited to the above two scenarios, and can also be applied to more scenarios, as long as the Scenarios with multiple service type interactions between two devices are applicable.
- the mobile phone and the headset can interact with data (ie, audio signals) of the first service, and can also interact with data (eg, pause commands) of the second service.
- data ie, audio signals
- data eg, pause commands
- a single logical channel corresponds to only one service.
- logical channel 1 corresponds to the first service
- logical channel 2 corresponds to the second service.
- the data of the first service cannot be multiplexed with logical channel 2
- the data of the second service cannot be multiplexed with logical channel 1.
- logical channel 1 corresponds to transmission resource 1
- logical channel 2 corresponds to transmission resource 2
- transmission resource 1 and transmission resource 2 are different.
- the time domain resources of transmission resource 1 and transmission resource 2 are different (for example, if the short-range communication system is a time-division system, then transmission resource 1 and transmission resource 2 are time-divisional).
- the data will not be sent in time.
- the sender needs to send the data of the second service. Since the second service must be sent on the transmission resource 2 corresponding to the logical channel 2, if the transmission resource 2 has not yet arrived, it needs to wait for the transmission resource 2 to arrive before it can be sent. longer transmission delay.
- the transmission resource 1 corresponding to the logical channel 1 arrives and is not occupied, because the data of the second service cannot be multiplexed for transmission on the logical channel 1, the transmission resource 1 is wasted.
- the earphone receives and plays the audio signal sent by the mobile phone.
- the headset detects a pause operation triggered by the user on the headset, it needs to send a pause command to the mobile phone. If you need to wait for the corresponding transmission resource to arrive, it will cause the delay of sending the pause command. Then, the experience for the user is that the user triggers the pause operation on the headset, but the mobile phone waits for a certain delay before pausing, and the experience is poor.
- one logical channel may correspond to at least two services, and this document takes the corresponding two services as an example, for example, the first logical channel corresponds to the first service and the second service. That is to say, the first logical channel may be used to transmit data of the first service, and may also be used to transmit data of the second service.
- the headset can receive data (ie, audio signals) of the first service from the mobile phone on the transmission resource corresponding to the first logical channel.
- the headset needs to send the data of the second service (ie, the pause command) to the mobile phone, it can also be sent on the logical resource corresponding to the first logical channel, without waiting for the corresponding transmission resource, thereby reducing the sending delay.
- FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application. As shown in FIG. 3 , the process of the method includes:
- the first device configures a first logical channel, where the first logical channel corresponds to a first service and a second service.
- the second service is different from the first service.
- step 1 may also be included: establishing a short-distance communication connection between the first device and the second device.
- a specific implementation process may include: the first device sends a connection establishment request to the second device, where the connection establishment request is used to request the establishment of a short-distance communication connection.
- the connection establishment request may include communication resources (eg, transmission resources, which may include time domain resources, frequency domain resources, or time-frequency resources) configured by the first device for the second device.
- the second device may use the communication resource for information transmission with the first device.
- the second device may send a connection establishment response to the first device, where the connection establishment response is used to indicate approval or disapproval for establishing a connection with the first device.
- a connection establishment response is sent to indicate that it agrees to establish a connection with the first device.
- the second device does not agree to establish a connection with the first device, it may also not send a connection establishment response.
- the first device initiates a connection establishment request as an example. It can be understood that the second device may also initiate a connection establishment request to the first device, which is not limited in this embodiment of the present application. .
- step 2 establishing a logical channel between the first device and the second device.
- a specific implementation process may include: the first device sends a channel establishment request (connection request) to the second device, where the channel establishment request is used to request the establishment of a logical channel.
- the channel establishment request includes a channel ID (channel ID, CID), where the CID is used to indicate a logical channel used when the first device sends data to the second device.
- the channel establishment request may include multiple CIDs, such as CID1 and CID2, where CID1 is used to indicate the logical channel 1 and CID2 used when the first device sends data to the second device.
- the second device may send a channel establishment response (connection response) to the first device, and the channel establishment response may include the same CID as the response.
- the channel establishment request includes CID1 and CID2
- the channel establishment response may also include CID1 and CID2, indicating that the logical communication used when the first device sends data to the second device through negotiation between the first device and the second device includes: The logical channel 1 corresponding to CID1 and the logical channel 2 corresponding to CID2.
- the first device initiates the channel establishment request as an example.
- the second device may also initiate the channel establishment request to the first device, which is not limited in this embodiment of the present application.
- the first device sends configuration information to the second device, where the configuration information includes logical channel indication information.
- the logical channel indication information may be a logical channel identifier (channel ID), where the CID is used to instruct the second device to send data to the first device, or a logical channel used by the first device to send data to the second device.
- step 1 and step 2 may be performed sequentially, for example, step 1 is performed first and then step 2 is performed, or may be performed simultaneously.
- step 1 and step 2 may be two different and independent steps, or may be the same step.
- the connection establishment request in step 1 and the channel establishment request in step 2 are the same request.
- the application is not limited in this regard.
- step 2 The establishment of the logical channel between the first device and the second device is completed through step 2, and then service configuration can be performed on the logical channel, that is, to configure which service the logical channel corresponds to.
- the service corresponding to the logical channel may be configured independently by the first device, or independently configured by the second device, or configured through negotiation between the first device and the second device.
- the service corresponding to the logical channel may be specified in the protocol.
- the corresponding logical channel can be specified in the protocol.
- the first device includes configuration mode 1 and configuration mode 2.
- the first device sends a configuration negotiation request (configuration request) to the second device, and the configuration negotiation request is used to configure the first logical channel corresponding to the first service and the second service.
- configuration request configuration request
- the first device may further include the step of: determining the first service and the second service corresponding to the first logical channel. After determining the first service and the second service corresponding to the first logical channel, the first device notifies the second device (via a configuration negotiation request notification) that the first logical channel corresponds to the first service and the second service. That is, the first device is configured independently.
- the first logical channel corresponds to the first service and the second service, and the first service and the first service correspond to different protocols.
- the first service corresponds to the first protocol
- the second service corresponds to the second protocol
- the first protocol is different from the second protocol
- the first service corresponding to the first protocol means that the data of the first service is used/processed by the first protocol, or comes from the first protocol stack (for example, the first protocol stack supporting the first protocol)
- the second service corresponds to the second protocol It means that the data of the second service is used/processed by the second protocol, or comes from the second protocol stack (for example, the second protocol stack supporting the second protocol).
- the first service is an audio and video transmission service
- the first protocol is an audio/video distribution transport protocol (AVDTP), that is, the data of the first service, that is, audio and video data, is processed using the AVDTP protocol.
- the second service is the audio and video control service
- the second protocol is the audio/video control transport protocol (AVCTP), that is, the data of the second service, that is, the audio and video control information, is processed using the AVCTP protocol.
- AVCTP audio/video control transport protocol
- the present application mostly uses the protocol or field in the Bluetooth technology for exemplary description, but the solution of the present application does not limit the specific application technology or system.
- the data (for example, protocol data units) from different upper-layer protocol stacks can be understood as data of different services.
- the data from the AVCTP protocol stack and the data from the AVDTP protocol stack belong to data of different services.
- a "protocol indication field" in the protocol there may be a "protocol indication field" in the protocol, and different values are used to indicate different protocols.
- different values of the protocol/service multiple (PSM) field indicate different protocols.
- the AVCTP protocol and the AVDTP protocol are indicated by two different values, 0x0017 and 0x0019, respectively.
- the PSM field can be used to determine which protocol stack the data comes from.
- a single logical channel corresponds to only one service, and if one service corresponds to one protocol, then a single logical channel only corresponds to one protocol.
- the audio and video transmission service corresponds to the AVDTP protocol
- the audio and video control service corresponds to the AVCTP protocol
- the data from the AVDTP protocol stack and the data from the AVCTP protocol stack are sent on their corresponding logical channels.
- a logical channel may correspond to multiple protocols.
- logical channel 1 corresponds to the AVDTP protocol and the AVCTP protocol, that is, data from the AVDTP protocol stack (eg, audio and video data) and data from the AVCTP protocol stack ( For example, audio and video control information) can send their respective data on logical channel 1.
- data from the AVDTP protocol stack eg, audio and video data
- data from the AVCTP protocol stack For example, audio and video control information
- the first service corresponds to the first protocol stack
- the second service corresponds to the second protocol stack
- the first protocol stack is different from the second protocol stack
- the protocol is different from the protocol stack.
- the protocol may be a set of conventions that the executive body needs to comply with, and the protocol stack may be simply understood as a unit or module in the first device that can use the protocol to process data.
- the first protocol stack supports the first protocol, that is, the first protocol stack is a unit or module in the first device that uses the first protocol to process data.
- the second protocol stack supports the second protocol, that is, the second protocol stack may be a unit or module in the first device that uses the second protocol to process data.
- the first protocol stack and the second protocol stack may be the same unit or different units, which are not limited in this embodiment of the present application. It should be noted that the protocol in this application is not only limited to the protocol used for communication.
- the first service corresponding to the first protocol stack can be understood as the data of the first service comes from the first protocol stack, or the first protocol stack processes the data of the first service (for example, using the first protocol to process).
- the second protocol stack for the second service can be understood that the data of the second service comes from the second protocol stack, or the second protocol stack processes the data of the second service (using the second protocol).
- the first service is an audio and video transmission service
- the first protocol stack is a unit or module for processing audio and video data (ie, data of the first service) (for example, using the first protocol, ie, AVDTP protocol processing).
- the second service is an audio and video control service
- the second protocol stack is a unit or module for processing audio and video control information (ie, data of the second service) (for example, using the second protocol, ie, AVCTP protocol).
- the first logical channel corresponds to two services with different priorities.
- the first device determines two services with different priorities based on the priority relationship, and then configures the first logical channel to correspond to the two determined services.
- the priority relationship may be specified in the protocol, or set by the user, or set by default when the first device leaves the factory.
- the first logical channel corresponds to the first service and the second service, and the second service is a delay-sensitive service; and/or the first service is a non-delay-sensitive service.
- the delay-sensitive services refer to the services that have higher requirements on the delay, and if the delay is too large, the normal communication or user experience will be seriously affected.
- delay-sensitive services include factory motion control services, IoV remote control services, etc.
- the air interface transmission delay requirements of these services are generally at the level of 500ns to several ms.
- Non-delay-sensitive services are relative to delay-sensitive services, and refer to services that have lower requirements for delay, such as services that do not cause serious consequences if the delay is relatively large.
- non-delay-sensitive services include video transmission services, audio transmission services, etc.
- the air interface transmission delay requirements of these services are generally more than several ms.
- whether the service is a delay-sensitive service can be determined by comparing the air interface delay requirements or end-to-end delay requirements of the service.
- which services are delay-sensitive services and which services are non-delay-sensitive services can be specified in the protocol, or specified by the user, or the first device is configured by default before leaving the factory.
- the first logical channel corresponds to two services that require different delays.
- the second service is a service that can adopt a preempted transmission mode
- the first service is a service that can adopt a preempted transmission mode
- the services that can use the preempted transmission mode refer to services that can or are allowed to preempt logical channels corresponding to other services, and the services that can use the preempted transmission mode refer to services that allow other services to preempt their corresponding logical channels.
- Which services are available in the preempted transmission mode and which services are available in the preempted transmission mode can be specified in the protocol, or specified by the user, or the first device is configured by default before leaving the factory.
- the first logical channel corresponds to the first service and the second service
- the second service is a service for remotely controlling the first service
- the “remote control” here refers to the control of the peer device.
- the second service is a service for remotely controlling the first service means that the second service is a service for controlling the first service on the receiving end.
- the first device sends data of the second service to the second device, and the second service is used to control the execution of the first service in the second device.
- the first service is a streaming media service
- the second service is a service for remotely controlling the playback process of the streaming media service. That is, the second service is a service for controlling the playback process of the streaming media service on the opposite terminal device.
- the playing process at least includes at least one of the following: stop, play, fast-forward, fast-rewind, switch to the previous program, or switch to the next program. That is to say, the second service is used to control stop, play, fast-forward, fast-rewind, program switching, etc. of the audio and video services on the peer device.
- the first device After determining the first service and the second service corresponding to the first logical channel, the first device notifies the second device that the first logical channel corresponds to the first service and the second service through a configuration negotiation request.
- the configuration negotiation request message includes CID and indication information, the CID is used to indicate the first logical channel, the indication information is used to indicate the first service and the second service, or is used to indicate the first logical channel indicated by the CID Corresponding to the first service and the second service.
- the indication information may be an identifier of the first service and an identifier of the second service.
- the identifier of the first service may be first protocol stack indication information, and the first protocol stack indication information is used to indicate the first protocol stack corresponding to the first service.
- the identifier of the second service may be the second protocol stack indication information, and the second protocol stack indication information is used to indicate the second protocol stack corresponding to the second service.
- the identifier of the first service may be first protocol indication information, where the first protocol indication information is used to indicate the first protocol corresponding to the first service or a protocol supported by the first task stack corresponding to the first service. For example, if the first service corresponds to the first protocol, the first protocol indication information is used to indicate the first protocol. Or, the first service corresponds to the first protocol stack, the first protocol stack supports the first protocol, and the first protocol indication information is used to indicate the first protocol.
- the identifier of the second service may be second protocol indication information, and the second protocol indication information is used to indicate the second protocol corresponding to the second service or a protocol supported by the second protocol stack corresponding to the second service.
- the second protocol indication information is used to indicate the second protocol.
- the second service corresponds to the second protocol stack, and the second protocol stack supports the second protocol, and the second protocol indication information is used to indicate the second protocol.
- the indication information may also be an application ID (Application ID), that is, different services may be distinguished by different application IDs.
- Application ID Application ID
- the indication information may be located in a protocol service multiplex (protocol service multiplex, PSM) field in the configuration negotiation request, because the PSM field is used to indicate different protocols or protocol stacks.
- PSM protocol service multiplex
- the configuration negotiation request in the current short-range communication system includes CID and indication information, but the indication information only indicates one service. That is to say, the logical channel corresponding to the CID corresponds to only one service.
- the configuration negotiation request includes a CID and indication information, and the indication information is used to indicate two services. That is to say, the logical channel corresponding to the CID can correspond to two services, which is different from the configuration negotiation request in the current communication system.
- a configuration negotiation request is used to configure the first logical channel corresponding to two services.
- the first device may first configure the first logical channel to correspond to a service, and then add a service type corresponding to the first logical channel. For example, first configure the first logical channel to correspond to the first service, and then add the service type corresponding to the first logical channel, that is, configure the first logical channel to also correspond to the second service, that is, complete the first logical channel corresponding to the first service and the second service business configuration.
- the specific implementation process of configuration mode 2 includes:
- the first device sends a first configuration negotiation request to the second device, where the first configuration negotiation request is used to configure the first logical channel corresponding to the first service.
- the first configuration negotiation request message includes CID1 and first indication information, where CID1 is used to indicate the first logical channel, and the first indication information is used to indicate the first service corresponding to the first logical channel indicated by CID1.
- the first indication information may be an identifier of the first service.
- the identifier of the first service may be the first protocol stack indication information, or the first protocol indication information.
- the first device may also send a second configuration negotiation request to the second device, where the second configuration negotiation request is used to request to transmit the second configuration negotiation request on the first logical channel corresponding to the first service business data. It can be understood that the service type corresponding to the first logical channel is added.
- the first apparatus may further perform the step of: determining the second service corresponding to the first logical channel. That is, determine which business to add.
- the first logical channel has been configured to correspond to the first service
- there are multiple ways to determine the second service corresponding to the first logical channel for example, at least one of the following ways:
- the first device may determine the direct priority of the first service and the second service according to the priority relationship.
- the priority relationship may be specified in the protocol, or set by the user, or set by default when the first device leaves the factory, which is not limited in this embodiment of the present application. That is, after the first logical channel has been configured to correspond to the first service, the priority of the service newly configured for the first logical channel (ie, the second service) needs to be higher than that of the original service (ie, the first service).
- the service newly configured for the first logical channel may be a delay-sensitive service.
- the second service is a service that can adopt a preemptive transmission mode.
- the service newly configured for the first logical channel may be a service that can adopt a preemptive transmission mode.
- the second service is a service for remotely controlling the first service.
- the “remote control” here refers to the control of the peer device. That is, after the first logical channel has been configured to correspond to the first service, the service (ie, the second service) newly configured for the first logical channel may be a service for remotely controlling the first service.
- the first device After determining the second service corresponding to the first logical channel, the first device notifies the second device that the first logical channel also corresponds to the second service through the second configuration negotiation request.
- the second configuration negotiation request includes CID and indication information, the CID is used to indicate the first logical channel, the indication information is used to indicate the second service, or the first logical channel indicated by the CID also corresponds to the first logical channel.
- the indication information may be an identifier of the second service.
- the identifier of the second service may be second protocol stack indication information, and the second protocol stack indication information is used to indicate the second protocol stack corresponding to the second service.
- the identifier of the second service may be second protocol indication information, where the second protocol indication information is used to indicate the second protocol corresponding to the second service or a protocol supported by the second protocol stack corresponding to the second service.
- the above configuration mode 1 and configuration mode 2 are configured by the first device alone as an example. If the configuration is performed by the second device independently, the principle of the configuration by the first device is the same, and details are not repeated.
- the configuration process is described below by taking the negotiated configuration between the first device and the second device as an example, including configuration mode 3 and configuration mode 4.
- Configuration mode 3 corresponding to configuration mode 1 above, the first device sends a configuration negotiation request to the second device, and the configuration negotiation request is used to request negotiation to configure the first logical channel corresponding to the first service and the second service.
- the second device sends a configuration negotiation response (connection response) to the first device, where the configuration negotiation response is used to indicate whether the first device agrees or disagrees with the service configuration for the first logical channel.
- the configuration negotiation response includes a CID and indication information, where the CID is used to indicate the first logical channel, and the indication information is used to indicate whether the second device agrees or disagrees that the first logical channel corresponds to the first service and the second service. For example, if the indication information is 1, it means agree, and if it is 0, it means disagree. Or, when the indication information is the identifier of the first service and the identifier of the second service, it means that the second device agrees, otherwise, it means that the second device does not agree.
- the indication information is the identifier of the first service and the identifier of the second service, please refer to the foregoing introduction.
- the configuration response information may include the CID but not the indication information; if not, the configuration negotiation response includes the CID and the indication information, and the indication information is used to indicate that the first logical channel corresponds to the first logical channel.
- the configuration response information may include the CID but not the indication information; if it agrees, the configuration negotiation response includes the CID and the indication information, and the indication information is used to indicate that the first logical channel is agreed Corresponding to the first service and the second service.
- the first device may continue to initiate a configuration negotiation request and negotiate with the second device to determine the service corresponding to the first logical channel until until the second device agrees.
- the configuration negotiation response fed back by the second device may further include the first The identifier of the third service and the identifier of the fourth service are used to instruct the negotiation and configuration of the first logical channel to correspond to the third service and the fourth service. That is, the second device requests to configure the first logical channel corresponding to the third service and the fourth service.
- the first device may also send feedback to the second device, indicating that the first device agrees or disagrees that the first logical channel corresponds to the third service and the fourth service. If not agreed, the negotiation may continue until the service negotiation process of the first logical channel is completed.
- the configuration mode 4 corresponds to the configuration mode 2 above.
- the first device sends a first configuration negotiation request to the second device, and the first configuration negotiation request is used to request configuration negotiation of the first service corresponding to the first logical channel.
- the second device may also send a first configuration negotiation response to the first device, where the first configuration negotiation response is used to indicate approval or disapproval of the first service corresponding to the first logical channel.
- the first device may also send a second configuration negotiation request to the second device, where the second configuration negotiation request is used to request to transmit the second configuration negotiation request on the first logical channel corresponding to the first service business data.
- the second device may also send a second configuration negotiation response to the first device, where the second configuration negotiation response is used to indicate whether data of the second service is allowed or not allowed to be transmitted on the first logical channel of the first service.
- the second configuration negotiation response includes CID and indication information, where the CID is used to indicate the first logical channel, and the indication information is used to instruct the second device to allow or not to transmit the second device on the first logical channel of the first service business data.
- the indication information is 1 for permission, 0 for not allowed.
- the indication information is the identifier of the second service, it means that it is allowed, otherwise, it means that it is not allowed.
- the second configuration response information may include the CID but not the indication information; if not, the second configuration negotiation response includes the CID and the indication information, and the indication information is used to indicate that the first configuration is not allowed.
- the logical channel corresponds to the second service.
- the second configuration response information may include the CID but not the indication information; if allowed, the second configuration negotiation response includes the CID and the indication information, and the indication information is used to indicate the permission The first logical channel corresponds to the second service.
- the first device sends first information on the first logical channel, where the first information includes second data, and the second data includes data of the second service.
- the second device receives the first information on the first logical channel.
- step 1 generating the data of the second service may also be included.
- a control command is generated by a hardware interrupt, and the control command is the data of the second service.
- the control commands are control commands such as pause, stop, next song, previous song and the like.
- step 2 generating second data according to the data of the second service.
- the second protocol stack corresponding to the second service in the first device may use a corresponding protocol (referred to as the second protocol) to process data (such as control commands) of the second service to generate the second data, in which the second data is Including the data of the second service.
- the second protocol stack uses the AVCTP protocol to process the data of the second service to generate the second data.
- step 4 may also be included: generating first information according to the second data, where the first information includes the second data.
- the data frame structure of the first information is first introduced below. Please refer to FIG. 4 , which is a schematic diagram of the data frame structure of the first information.
- the first information includes a payload field, as well as other fields.
- the other fields are an acknowledgement (acknowledge, ACK) field, a reserved field, or other custom fields in the first information, or a field negotiated by the first device and the second device.
- the reserved fields may include fields reserved for future use (Reserved for Future Use, RFU).
- RFU Reserved for Future Use
- other fields can be headers.
- step 4 the inclusion of the second data in the first information may mean that the second data is carried in the payload field of the first information or carried in other fields.
- Protocol Data Unit Protocol Data Unit
- the PDU includes a protocol data unit (Service Data Unit, SDU).
- SDU Service Data Unit
- the header of the PDU may contain an acknowledgement character (ACK) field, which is a transmission control character sent by the receiver to the sender to indicate whether the receiver has successfully received the data sent by the sender. . It can be configured as 0 when it is successfully received; when it is unsuccessful, it can be configured as 1.
- ACK acknowledgement character
- the packet header may also include a reserved field, such as a reserved for future use (Reserved for Future Use, RFU) field. Typically, reserved fields are reserved for future system expansion. Usually filled with all 0s.
- the load field may correspond to the SDU, and other fields may correspond to the ACK field, the RFU field, and the like in the packet header. That is to say, the second data may be carried in the SDU in the PDU, or may also be carried in the ACK field, the RFU field, etc. in the packet header in the PDU.
- the load field in the information sent on the single logical channel is only used to carry the data of the service corresponding to the single logical channel.
- the payload field of the information sent on logical channel 1 can only carry data of service 1.
- the load field in the information sent on the first logical channel can be used to carry the data of the first service or the first service.
- the payload field carries the data of the first service
- the payload field carries the data of the second service
- step 4 there may be multiple ways to generate the first information according to the second data.
- the second data is carried in the payload field of the first information, and the first information does not include the data of the first service.
- the payload field when the first logical channel needs to be occupied to send the data of the first service, the payload field carries the data of the first service, and when the first logical channel needs to be occupied to send the data of the second service, the payload field carries the second service The data. If the payload field carries the data of the second service, it can be understood that the payload field is occupied by the data of the second service but does not include the data of the first service, that is, the first logical channel is preempted by the data of the second service. That is, the first mode is a mode in which the data of the second service preempts the first logical channel.
- the sending end receives the data of the second service from the second protocol stack in the upper layer.
- the data of the second service use the data of the second service as an SDU to generate a PDU, that is, the PDU does not include the data of the first service, and then the first logical channel corresponds to The PDU is sent out on the transmission resource. That is, the data of the second service preempts the first logical information.
- the receiving end that is, the second device
- the first device may instruct the receiving end to include data of the second service in the first information sent on the first logical channel in a certain manner.
- the first information may further include indication information, which is used to indicate that the first information includes data of the second service, or indicates that the load field in the first information includes data of the second service.
- the indication information may be an identifier of the second service.
- the identifier of the second service may be second protocol stack indication information or second protocol indication information.
- the first information may further include channel identification information, where the channel identification information, such as CID, is used to indicate the first logical channel. In this way, when the receiving end receives the first information, the first logical channel can be determined according to the CID in the first information, and the data of the second service is included in the first information according to the indication information.
- the receiving end determines, according to the indication information carried in the information, which service data is included in the information. If the indication information indicates the first service, it is determined that the received information includes data of the first service, and if the indication information indicates the second service, it is determined that the received information includes data of the second service.
- the indication information may be two bits, and 00, 01, and 10 respectively indicate that only the data of the first service exists, only the data of the second service exists, and the first service and the second service exist simultaneously. business data.
- a single logical channel corresponds to only one service, that is, a logical channel and a service have a one-to-one correspondence.
- the sender only needs to carry the logical channel identifier CID1 of logical channel 1 in the information sent on logical channel 1.
- the receiver After the receiver receives the information, it can determine the information according to the CID1 carried in the information. Include business 1 data.
- the information sent by the sending end on the first logical channel includes indication information for indicating which service data is included in the sent information.
- the first information may not carry the indication information.
- the first information when the first information does not carry the indication information, the first information includes the data of the second service by default, and when the first information carries the indication information, it indicates that the first information includes the data of the first service.
- the first information when the first information carries the indication information, the first information includes the data of the second service by default, and when the first information does not carry the indication information, it indicates that the first information includes the data of the first service. That is to say, after receiving the information on the first logical channel, the receiving end can determine what kind of service data is included in the information according to whether the information carries indication information.
- the data of the first service is carried in the payload field of the first information, and the second data is carried in other fields in the first information.
- the other fields are the ACK field, the reserved field or other self-defined fields in the first information, or the fields determined through negotiation between the first device and the second device.
- the reserved fields may include fields reserved for future use (Reserved for Future Use, RFU).
- the load field in the first information carries the data of the first service, and other fields include the second data, that is, the data of the second service.
- the first information is mainly used to send the data of the first service.
- the second data is carried on the first information and sent.
- the data of the first service is carried in the SDU
- the data of the second service is carried in the ACK field and the reserved field in the packet header, or can also be carried in other fields in the PDU.
- the application examples are not limited.
- the sender receives the data of the second service from the second protocol stack in the upper layer, and receives the data of the second service from the first protocol stack in the upper layer.
- the data of one service is used as SDU
- a packet header is added before the SDU to generate a PDU
- the packet header includes the data of the second service
- the PDU is sent out on the transmission resource corresponding to the first logical channel. That is, the SDU of the PDU carries the data of the first service, and the packet header of the PDU carries the data of the second service. In this way, the data of two services can be sent through one instruction, which saves signaling overhead.
- the first device may instruct the receiving end, that is, the second device, that the first information includes the data of the first service and the data of the second service.
- the first information includes indication information
- the indication information is used to indicate that the first information includes data of the first service and data of the second service.
- the indication information may be an identifier of the first service and an identifier of the second service.
- the first information may not carry the indication information.
- the first information includes the data of the first service and the data of the second service.
- the receiving end parses from other fields of the first information whether the data of the second service is included, without indicating through the indication information.
- RFU meaning 000 shall not occupy 001 stop 010 resume playing 011 volume up 100 volume down 101 previous song 110 next song other reserved
- the receiving end receives the first information and parses out that the RFU field of the first information is 000, it is determined that the first information includes the data of the first service and does not include the data of the second service.
- the RFU field is not 000, it is determined that the RFU field includes the data of the second service.
- the current first logical channel is occupied by the data of the first service
- the second service if there is data of the second service to be sent, use the channel preemption mode of mode 1 and the data piggyback mode of mode 2
- the data of the second service can be sent out through the first logical channel in time to reduce the transmission delay. Therefore, before S302, a step may be further included: determining that the second service satisfies the condition. That is, after it is determined that the second service meets the conditions, the above channel preemption mode or data piggyback mode can be used to send the data of the second service, otherwise, the data of the second service needs to be queued and waited (for example, the first logical channel is currently being occupied to send the second service). The data of one service and the data of the second service need to wait in line).
- the step of determining that the second service satisfies the condition specifically includes at least one of the following:
- the second service is a service for remotely controlling the first service.
- the second device acquires the second data.
- the step may further include: the second device determines, according to the first information, that the first information includes data of the second service.
- a possible implementation manner is that the first information carries indication information, and the second device determines, according to the indication information, that the first information includes data of the second service. Wherein, when the indication information is the identifier of the second service, it is determined that the data of the second service is included in the first information.
- the second device determines whether the first information carries indication information, and determines which service data is included in the first information. For example, if the indication information is carried, it is determined that the first information includes data of the second service; otherwise, it is determined that the first information includes data of the first service. Or, if the indication information is not carried, it is determined that the first information includes the data of the second service; otherwise, it is determined that the first information includes the data of the first service.
- the second device parses whether other fields (such as packet headers) in the first information include data of the second service. For example, continuing to take the above Table 1 as an example, when it is parsed that the RFU field of the first information is 000, it is determined that the first information includes the data of the first service and does not include the data of the second service. When the RFU field is not 000, it is determined that the RFU field includes data of the second service.
- acquiring the second data by the second device may mean that, after parsing the second data from the first information, the second device sends the second data to the second protocol stack, and the second protocol stack corresponds to the second service.
- the information sent by the first device (such as a headset) to the second device (such as a mobile phone) includes data of the second service (such as a pause command), and after the second device receives the information , sending the data of the second service (for example, a pause instruction) to a second protocol stack (for example, a protocol stack corresponding to the AVCTP protocol) in the second device for processing.
- the second device may perform necessary processing on the second data, and then submit the processed data to the second protocol stack.
- a single logical channel corresponds to one service.
- logical channel 1 corresponds to service 1. Therefore, if the receiver receives information on logical channel 1 and determines that the information includes data of service 1, it only needs to hand over the data of service 1 to the protocol stack corresponding to service 1.
- the first logical channel corresponds to the first service and the second service, so the information received by the receiving end on the first logical channel may include data of the first service or data of the second service. Therefore, the receiving end needs to make further judgments to determine which service data the information carries.
- the data of the second service is sent to the second protocol stack corresponding to the second service
- the data of the first service is sent to the first protocol stack corresponding to the first service.
- the following uses an example to introduce the communication method provided by the embodiment of the present application.
- This example can be understood as a data transmission process between different protocol layers in the first device and the second device after the short-distance communication connection is established between the first device and the second device.
- the first device includes a network, a transmission and application layer, a data link layer and a physical layer.
- the second device includes a network, transport and application layers, a data link layer, and a physical layer.
- the network, transmission and application layer, data link layer and physical layer here can be considered as a logical division, which is divided into three major layers: upper layer, middle layer and bottom layer. Different communication technologies or communication models may have more specific and lower level divisions, which are not specifically limited here.
- the network, transmission and application layers correspond to at least one of layers 3 to 7 of the Open System Internet Reference Model (open system interconnect, OSI).
- Layer 3 is the network layer: responsible for routing to determine the path between two nodes.
- the network layer can also perform flow control;
- layer 4 is the transport layer: responsible for providing a network line for the session layer, that is, a transmission path;
- layer 5 is the session layer (session layer): responsible for the session between the two nodes Establishment, maintenance and termination;
- layer 6 is the presentation layer: responsible for encoding or decoding the data, thereby converting the data into a format compatible or suitable for transmission; optionally, the presentation layer can decrypt and encrypt the data;
- Layer 7 is the application layer: responsible for providing services to applications (also known as applications or users);
- the AVCTP protocol and AVDTP in the Bluetooth protocol implement the function of the data transmission layer, and therefore belong to the network, transmission and application layers. It is assumed that the protocol corresponding to the first protocol stack is the AVCTP protocol, and the protocol corresponding to the second protocol stack is the AVDTP protocol. The data generated by the first protocol stack and the second protocol stack are sent through the lower layer.
- Data link layer Ensures reliable data transmission over physical links. Data or instructions are encapsulated into specific frames that can be transmitted by the physical layer; optionally, the data link layer also includes functions such as access control, resource management, data segmentation, concatenation, and error correction.
- the data link layer may include a logical link control and adaptation protocol (logical link control and adaptation protocol, L2CAP) layer and a logical layer (logical layer, LL) layer.
- L2CAP logical link control and adaptation protocol
- LL logical layer
- L2CAP logical link control and adaptation protocol
- L2CAP logical link control and adaptation protocol
- L2CAP logical link control and adaptation protocol
- LL layer is responsible for resource management and allocation.
- Physical layer Use the transmission medium to provide physical connection for the data link layer to realize the transparent transmission of the bit stream. Generally, the physical layer performs channel encoding or decoding to ensure the reliability of data transmission;
- the data transmission process between the layers is as follows: when the first protocol stack in the network, transmission and application layer in the first device generates the data of service 1, the network, transmission and application layer transfer the data of service 1 to the first protocol stack in the first device. Data is sent to the data link layer.
- the data link layer determines that the first protocol stack corresponds to the logical channel 1, and the application layer sends the data of the service 1 to the second device on the transmission resource 1 corresponding to the logical channel 1.
- the physical layer in the second device receives the information, it is sent to the data link layer in the second device, and the data link layer determines the logical channel 1, and since there is a one-to-one correspondence between the logical channel and the service, and Logical channel 1 corresponds to service 1, so it can be determined that the received information includes data of service 1, so the data link layer sends the data of service 1 to the first protocol stack in the network, transmission and application layers for processing.
- the network, transport and application layer in the first device When the second protocol stack in the network, transport and application layer in the first device generates data of service 2, the network, transport and application layer sends the data of service 2 to the data link layer.
- the data link layer determines that the second protocol stack corresponds to the logical channel 2, then the network, transmission and application layers send the data of the service 2 to the second device on the transmission resource 2 corresponding to the logical channel 2.
- the physical layer in the second device receives the information, it is sent to the data link layer in the second device, and the data link layer determines logical channel 2, and since logical channel 2 corresponds to service 2, it can be determined to receive
- the information of the service 2 includes the data of the service 2, so the data link layer sends the data of the service 2 to the second protocol stack in the network, transmission and application layer for processing.
- the data link layer determines the logical channel, which may be determined based on the logical channel identifier.
- FIG. 6 is a schematic diagram of another process of the communication method provided by the embodiment of the present application. As shown in FIG. 6 , the process of the method includes:
- a first protocol stack in a network, transmission and application layer in the first device sends first data to a data link layer, where the first data includes data of a first service.
- the first protocol stack is a protocol stack corresponding to the AVDTP protocol
- the data of the first service may be audio and video data.
- S602 The second protocol stack in the network, transmission and application layer in the first device sends second data to the data link layer, where the second data includes data of the second service.
- the second protocol stack is a protocol stack corresponding to the AVCTP protocol
- the data of the second service may be audio and video control information.
- the data link layer in the first device generates first information according to the first data and the second data.
- the payload field in the first information includes the first data and the other fields include the second data, or the payload field includes the second data and the other fields include the first data.
- the payload field and other fields please refer to the previous introduction.
- the principle of data transmission between layers can be that the PDU of this layer can be used as the SDU of the next layer to generate the PDU of the next layer.
- high layers such as the network, transport and application layers process the data generated by this layer to generate PDUs of this layer, and send the PDUs to the next layer, the data link layer.
- the data link layer uses the PDUs sent by the network, transport and application layers as the SDUs of this layer to generate PDUs of this layer, that is, the SDUs in the PDUs generated by the data link layer are PDUs sent by the network transport layer.
- the high-level PDU may be segmented as necessary and divided into several data segments, then at this time A single data link layer PDU may contain only one of the data segments.
- the channel preemption method is used (taking the data of the second service, that is, the second data preempting the first logical channel as an example) , specifically including: the network, transmission and application layers process the second data to generate PDU2, process the first data to generate PDU1, and send PDU2 and PDU1 to the data link layer.
- the data link layer includes a first logical channel. If the second data preempts the first logical channel, the data link layer can use the PDU2 corresponding to the second data as the SDU of its own layer to generate the first PDU (ie, the first information), that is, the first information includes the first PDU.
- the second data does not include the first data, that is, the data including the second service does not include the data of the first service.
- the data link layer may further carry indication information in the header of the first PDU, where the indication information is used to indicate that the first PDU includes data of the second service.
- the indication information may be an identifier of the second service, for example, protocol stack indication information of the second protocol stack corresponding to the second service, or protocol indication information of the second protocol corresponding to the second service.
- the first data may be sent at the next sending opportunity after the second data is sent.
- the data piggybacking method (taking the data of the second service, that is, the second data is piggybacked and sent on the first information as an example), it specifically includes: the network, transmission and application layers process the second data to generate PDU2, and process the first data. PDU1 is generated, and PDU2 and PDU1 are sent to the data link layer.
- the data link layer includes a first logical channel. If the data piggybacking method is used, the data link layer uses PDU1 as an SDU to generate the first PDU (ie, the first information), and then carries PDU2 in the header of the first PDU.
- the first logical channel is mainly used to send data of the first service, and when data of the second service needs to be sent, the data of the second service is carried in the first information.
- the first information may or may not carry indication information for indicating that the first information includes data of the second service. If the indication information is not carried, after receiving the first information, the receiving end can analyze whether the packet header in the first information carries the data of the second service.
- the physical layer in the first device sends the first information on the first logical resource corresponding to the first logical channel.
- the transmission resources include time domain resources, frequency domain resources or time-frequency resources.
- the time-frequency resources include time-domain resources and frequency-domain resources.
- the physical layer in the second device receives the first information.
- the physical layer in the second device receives the first information on the first transmission resource.
- the physical layer in the second device sends the received first information to the data link layer.
- the data link layer in the second device determines the data of the second service in the first information.
- the second device determines whether the first information carries indication information, and if the indication information carries and the indication information can indicate that the first information carries data of the second service, it is determined that the first information includes data of the second service. Or, the second device parses other fields of the first information, such as the packet header, to determine whether there is data of the second service.
- the parsed second service data may be sent to the second protocol stack in the network, transmission and application layers for processing, namely S609.
- the parsed second data may also be encapsulated and then sent to the second protocol stack in the network, transmission and application layers for processing.
- the data link layer parses the second data in the payload field and sends it to the second protocol stack without sending data to the first protocol stack.
- the data link layer can parse the second data from the header of the first information and send it to the second protocol stack, that is, S609; it can also parse from the payload field in the first information
- the first data is output and sent to the first protocol stack for processing, that is, S608.
- the second device may perform necessary processing on the second data, and then submit the processed data to the second protocol stack.
- the data link layer in the second device sends the first data to the first protocol stack in the network, transmission and application layers.
- the data link layer in the second device sends the second data to the second protocol stack in the network, transmission and application layers.
- FIG. 7 is a structural block diagram of a communication apparatus 700 provided by an embodiment of the present application.
- the communication device 700 is, for example, the above-mentioned first device or second device.
- the communication device 700 includes a processing unit 710 and a communication unit 720 .
- the communication device 700 is the above-mentioned first device, or a device capable of supporting the first device to implement the functions required by the method, such as a chip system.
- the processing unit 710 may be configured to perform all operations performed by the first device in the embodiment shown in FIG. 3 or FIG. 6 except for the transceiving operations, and/or for supporting other processes of the techniques described herein.
- the communication unit 720 may be used to perform all of the transceiving operations performed by the first device in the embodiment shown in FIG. 3 or FIG. 6, and/or for other processes in support of the techniques described herein.
- the communication unit 720 may be a functional module, and the functional module can complete both the sending operation and the receiving operation.
- the communication unit 720 is a module included in the communication device 700, and the communication unit 720 may be used to execute FIG. 3 or FIG. All the sending and receiving operations performed by the first device in the embodiment shown in 6.
- the communication unit 720 when performing a sending operation, can be considered as a sending module, and when performing a receiving operation, it can be considered that the communication unit 720 is a sending module.
- the communication unit 720 can also be a general term for two functional modules, the two functional modules are respectively a sending module and a receiving module, the sending module is used to complete the sending operation, for example, the communication unit 720 is included in the communication device.
- the sending module can be used to perform all sending operations performed by the first device in the embodiment shown in FIG. 3 or FIG. 6
- the receiving module is used to complete the receiving operations, for example, the communication unit 720 is included in the first device module
- the receiving module may be used to perform all the receiving operations performed by the first device in the embodiment shown in FIG. 3 or FIG. 6 .
- the processing unit 710 is configured to configure a first logical channel, where the first logical channel corresponds to the first service and the second service;
- the communication unit 720 is configured to send the first logical channel to the second device on the first logical channel information, the first information includes second data, wherein the second data includes data of the second service, and the first service is different from the second service.
- the communication device 700 is the above-mentioned second device, or a device capable of supporting the second device to implement the functions required by the method, such as a chip system.
- the processing unit 710 may be configured to perform all the operations performed by the second device in the embodiment shown in FIG. 3 or FIG. 6 except for the transceiving operations, and/or for other processes in support of the techniques described herein.
- the communication unit 720 may be used to perform all of the transceiving operations performed by the second device in the embodiment shown in FIG. 3 or FIG. 6, and/or for other processes in support of the techniques described herein.
- the communication unit 720 can be a functional module, and the functional module can complete both the sending operation and the receiving operation.
- the communication unit 720 is a module included in the second device, and the communication unit 720 can be used to execute FIG. 3 or FIG. All the sending and receiving operations performed by the second device in the embodiment shown in 6.
- the communication unit 720 when performing a sending operation, can be considered as a sending module, and when performing a receiving operation, it can be considered that the communication unit 720 is a sending module.
- the communication unit 720 is a receiving module; alternatively, the communication unit 720 may also be a collective name for two functional modules, the two functional modules are respectively a sending module and a receiving module, the sending module is used to complete the sending operation, for example, the communication unit 720 is included in the second device , the sending module can be used to perform all sending operations performed by the second device in the embodiment shown in FIG. 3 or FIG. 6 , and the receiving module is used to complete the receiving operations, for example, the communication unit 720 is included in the second device. , the receiving module can be used to perform all the receiving operations performed by the second device in the embodiment shown in FIG. 3 or FIG. 6 .
- the communication unit 720 is configured to receive first information from a first device on a first logical channel, where the first logical channel corresponds to a first service and a second service, and the first information includes second data, The second data includes data of the second service, and the first service is different from the second service; the processing unit 710 is configured to acquire the second data in the first information.
- the division of units in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be other division methods.
- the functional units in the various embodiments of the present application may be integrated into one processing unit. In the device, it can also exist physically alone, or two or more units can be integrated into one unit.
- the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
- Each unit in FIG. 7 may be implemented by one or more software, hardware, firmware, or a combination thereof.
- the software or firmware includes, but is not limited to, computer program instructions or code, and can be executed by a hardware processor.
- the hardware includes, but is not limited to, various types of integrated circuits, such as a central processing unit (CPU), a digital signal processor (DSP), a field programmable gate array (FPGA), or an application specific integrated circuit (ASIC).
- CPU central processing unit
- DSP digital signal processor
- FPGA field programmable gate array
- ASIC application specific integrated circuit
- FIG. 8 is a schematic hardware diagram of a communication apparatus 800 provided by an embodiment of the present application.
- the communication device 800 includes at least one processor 801 and a communication interface 803 .
- the communication interface 803 is used to communicate with other devices through a transmission medium, so that the communication apparatus 800 can communicate with other devices.
- the communication interface 803 may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces.
- the transceiver when the communication interface 803 is a transceiver, the transceiver may include an independent receiver and an independent transmitter; a transceiver with integrated transceiver functions, or an interface circuit, etc. may also be included.
- the communication apparatus 800 may further include at least one memory 802 for storing program instructions and/or data.
- Memory 802 is coupled to processor 801 .
- the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
- the processor 801 may cooperate with the memory 802 , the processor 801 may execute program instructions stored in the memory 802 , and at least one of the at least one memory 802 may be included in the processor 801 .
- connection medium between the processor 801 , the memory 802 , and the communication interface 803 is not limited in this embodiment of the present application.
- the memory 802, the processor 801, and the communication interface 803 are connected through a communication bus 804 in FIG. 8, and the bus is represented by a thick line in FIG. 8, and the connection mode between other components is only a schematic illustration , not as a limitation.
- the bus may include an address bus, a data bus, a control bus, and the like. For convenience of presentation, only one thick line is used in FIG. 8, but it does not mean that there is only one bus or one type of bus.
- the communication apparatus 800 is configured to implement the steps performed by the first apparatus in the flow shown in FIG. 3 or FIG. 6 , and the communication apparatus 800 may be the first apparatus, or a chip or circuit in the first apparatus.
- the communication interface 803 is used to perform the transceiving operation of the first device in the above embodiment.
- the processor 801 is configured to perform processing-related operations of the first apparatus in the above method embodiments.
- the processor 801 is configured to configure a first logical channel, where the first logical channel corresponds to the first service and the second service;
- the communication interface 803 is configured to send the first logical channel to the second device on the first logical channel information, the first information includes second data, wherein the second data includes data of the second service, and the first service is different from the second service.
- the communication apparatus 800 is configured to implement the steps performed by the second apparatus in the flow shown in FIG. 3 or FIG. 6 , and the communication apparatus 800 may be the second apparatus, or a chip or circuit in the second apparatus.
- the communication interface 803 is used to perform the related operations of the second device side transceiving in the above embodiment.
- the processor 801 is configured to perform processing-related operations on the second device side in the above method embodiments.
- the communication interface 803 is configured to receive first information from a first device on a first logical channel, where the first logical channel corresponds to a first service and a second service, and the first information includes second data, The second data includes data of the second service, and the first service is different from the second service; the processor 801 is configured to acquire the second data in the first information.
- the communication apparatus 800 may be a terminal device or a part of a component (such as a chip) within the terminal device.
- the terminal device may be, for example, a smart mobile terminal, a smart home device, a smart car, a smart wearable device, and the like.
- the intelligent mobile terminal is such as a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), and the like.
- Smart home devices such as smart refrigerators, smart washing machines, smart TVs, speakers, etc.
- Smart car wearable devices such as smart headphones, smart glasses, smart bracelets, smart watches, smart clothing or shoes, etc.
- the processor 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, or a discrete hardware component, which can implement or
- a general purpose processor may be a microprocessor or any conventional processor or the like.
- the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
- the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or may also be a volatile memory (volatile memory), for example Random-access memory (RAM).
- Memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
- the memory in this embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and/or data.
- the methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
- software When implemented in software, it can be implemented in whole or in part in the form of a computer program product.
- the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
- the computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable apparatus.
- the computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server or data center by means of wired (such as coaxial cable, optical fiber, digital subscriber line, DSL for short) or wireless (such as infrared, wireless, microwave, etc.)
- a computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media.
- the available media can be magnetic media (eg, floppy disks, hard disks, magnetic tape), optical media (eg, digital video disc (DVD) for short), or semiconductor media (eg, SSD), and the like.
- “at least one” refers to one or more, and “multiple” refers to two or more.
- “And/or”, which describes the relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, it can indicate that A exists alone, 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 are an “or” relationship.
- At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
- At least one (a) of a, b, or c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.
- ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority, or importance of multiple objects.
- the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
- computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
- These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
- the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.
- the disclosed apparatus and method may be implemented in other manners without exceeding the scope of the present application.
- the above-described embodiments are only illustrative.
- the division of the modules or units is only a logical function division.
- multiple units or components may be combined. Either it can be integrated into another system, or some features can be omitted, or not implemented.
- the unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units .
- Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.
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Abstract
Description
RFU | 含义 |
000 | 不得占用 |
001 | 停止 |
010 | 继续播放 |
011 | 音量调大 |
100 | 音量调小 |
101 | 上一首 |
110 | 下一首 |
其他 | 预留 |
Claims (39)
- 一种通信方法,应用于第一装置,其特征在于,包括:配置第一逻辑信道,所述第一逻辑信道对应第一业务和第二业务;在所述第一逻辑信道上向第二装置发送第一信息,所述第一信息中包括第二数据,其中,所述第二数据包括所述第二业务的数据,所述第一业务不同于所述第二业务。
- 根据权利要求1所述的方法,其特征在于,所述第一业务的数据来自第一协议栈;所述第二业务的数据来自第二协议栈;所述第一协议栈与所述第二协议栈所支持的协议不同。
- 根据权利要求2所述的方法,其特征在于,所述第一协议栈用于音视频数据传输,所述第二协议栈用于音视频传输控制;或者,所述第一协议栈用于音视频传输控制,所述第二协议栈用于音视频数据传输。
- 根据利要求1-3任一所述的方法,其特征在于,所述第一业务的数据包括音视频数据,所述第二业务的数据包括音视频控制信息。
- 根据权利要求1-4任一所述的方法,其特征在于,所述第一信息中还包括信道标识信息和/或协议指示信息,所述信道标识信息用于指示所述第一逻辑信道;所述协议指示信息用于指示第二协议栈所支持的协议,所述第二协议栈对应所述第二业务。
- 根据权利要求1-5任一所述的方法,其特征在于,所述第二数据承载在所述第一信息中的负载字段,所述第一信息中不包含所述第一业务的数据。
- 根据权利要求1-5任一所述的方法,其特征在于,所述第一信息中还包含所述第一业务的数据,所述第一业务的数据承载在所述第一信息中的负载字段,所述第二数据承载在所述第一信息中所述负载字段以外的其它字段。
- 根据权利要求6或7所述的方法,其特征在于,所述其它字段为所述第一信息中的确认ACK字段、保留字段或者其它自定义字段。
- 根据权利要求1-8任一所述的方法,其特征在于,在配置第一逻辑信道之前,所述方法还包括:向所述第二装置发送配置协商请求,所述配置协商请求用于请求协商在所述第一业务对应的所述第一逻辑信道上传输所述第二业务的数据;其中,所述配置协商请求消息中包含协议指示信息,所述协议指示信息用于指示第二协议栈所支持的协议,所述第二协议栈对应所述第二业务;接收所述第二装置的配置协商响应,所述配置协商响应用于指示允许在所述第一逻辑信道上传输所述第二业务的数据。
- 根据权利要求1-9任一所述的方法,其特征在于,所述第一业务为流媒体业务,所述第二业务为远程控制所述流媒体业务的播放进程的业务。
- 根据权利要求10所述的方法,其特征在于,所述第一业务是音频和/或视频业务时,所述播放进程至少包括以下至少一项:停止、播放、快进、快退、切换到上一个节目、或者切换到下一个节目。
- 根据权利要求1-11任一所述的方法,其特征在于,所述第二业务的优先级不低于所述第一业务的优先级;或者,所述第二业务为时延敏感类业务;或者,所述第二业务为可采用抢占传输模式的业务;或者,所述第二业务是用于远程控制所述第一业务的业务。
- 根据权利要求1-12任一所述的方法,其特征在于,所述第一装置中包括网络、传输与应用层、数据链路层和物理层,所述第一逻辑信道是所述数据链路层中的第一逻辑信道;在所述第一逻辑信道上向第二装置发送第一信息,包括:所述数据链路层接收来自所述网络、传输与应用层中第一协议栈的第一业务的数据,接收来自所述网络、传输与应用层中第二协议栈的所述第二业务的数据;所述数据链路层生成所述第一信息并传递给所述物理层,所述第一信息为第一协议数据单元PDU,所述第一信息的包头中包含信道标识信息和/或协议指示信息,所述信道标识信息用于指示所述第一逻辑信道;所述协议指示信息用于指示第二协议栈所支持的协议,所述第二协议对应所述第二业务;所述第一信息的负载字段、确认ACK字段、保留字段或者其它自定义字段中包含所述第二业务的数据;所述物理层在与所述第一逻辑信道对应的第一物理传输资源上将所述第一信息发送给所述第二装置。
- 一种通信方法,应用于第二装置,其特征在于,包括:在第一逻辑信道上接收来自第一装置的第一信息,所述第一逻辑信道对应第一业务和第二业务,所述第一信息中包括第二数据,其中,所述第二数据包括所述第二业务的数据,并且所述第一业务不同于所述第二业务;获取所述第一信息中的所述第二数据。
- 根据权利要求14所述的方法,其特征在于,获取所述第一信息中的所述第二数据,包括:发送所述第二数据至第二协议栈,所述第二协议栈对应所述第二业务。
- 根据权利要求14或15所述的方法,其特征在于,所述第一业务的数据来自第一协议栈;所述第二业务的数据来自第二协议栈;所述第一协议栈与所述第二协议栈所支持的协议不同。
- 根据权利要求16所述的方法,其特征在于,所述第一协议栈用于音视频数据传输,所述第二协议栈用于音视频传输控制;或者,所述第一协议栈用于音视频传输控制,所述第二协议栈用于音视频数据传输。
- 根据利要求14-17任一所述的方法,其特征在于,所述第一业务的数据包括音视频数据,所述第二业务的数据包括音视频控制信息。
- 根据权利要求14-18任一所述的方法,其特征在于,所述第一信息中还包括信道标识信息和/或协议指示信息,所述信道标识信息用于指示所述第一逻辑信道;所述协议指示信息用于指示第二协议栈所支持的协议,所述第二协议栈对应所述第二业务。
- 根据权利要求14-19任一所述的方法,其特征在于,所述第二数据承载在所述第一信息中的负载字段,所述第一信息中不包含所述第一业务的数据。
- 根据权利要求14-19任一所述的方法,其特征在于,所述第一信息中还包含所述第一业务的数据,所述第一业务的数据承载在所述第一信息中的负载字段,所述第二数据承载在所述第一信息中所述负载字段以外的其它字段。
- 根据权利要求20或21所述的方法,其特征在于,所述其它字段为所述第一信息中的确认ACK字段、保留字段或者其它自定义字段。
- 根据权利要求14-22任一所述的方法,其特征在于,在所述第一逻辑信道上接收来自第一装置的第一信息之前,所述方法还包括:接收来自所述第一装置的配置协商请求,所述配置协商请求用于请求协商在所述第一业务对应的所述第一逻辑信道上传输所述第二业务的数据;其中,所述配置协商请求消息中包含协议指示信息,所述协议指示信息用于指示第二协议栈所支持的协议,所述第二协议栈对应所述第二业务;向所述第一装置发送配置协商响应,所述配置协商响应用于指示允许在所述第一逻辑信道上传输所述第二业务的数据。
- 根据权利要求14-23任一所述的方法,其特征在于,所述第一业务为流媒体业务,所述第二业务为远程控制所述流媒体业务的播放进程的业务。
- 根据权利要求24所述的方法,其特征在于,所述第一业务是音频和/或视频业务时,所述播放进程至少包括以下至少一项:停止、播放、快进、快退、切换到上一个节目、以及切换到下一个节目。
- 根据权利要求14-25任一所述的方法,其特征在于,所述第二业务的优先级不低于所述第一业务的优先级;或者,所述第二业务为时延敏感类业务;或者,所述第二业务为可采用抢占传输模式的业务;或者,所述第二业务是用于远程控制所述第一业务的业务。
- 根据权利要求14-26任一所述的方法,其特征在于,所述第二装置中包括网络、传输与应用层、数据链路层和物理层;在第一逻辑信道上接收来自第一装置的第一信息,包括:所述物理层接收所述第一信息,并将所述第一信息发送给数据链路层;所述第一信息为第一协议数据单元PDU;所述第一信息的包头中包含信道标识信息和/或协议指示信息,所述信道标识信息用于指示所述第一逻辑信道;所述协议指示信息用于指示第二协议栈所支持的协议,所述第二协议栈与所述第二业务对应;所述第一信息的负载字段、确认ACK字段、保留字段或者其它自定义字段中包含所述第二数据;所送数据链路层将所述第二数据发送给所述网络、传输与应用层中所述第二协议栈。
- 一种通信装置,其特征在于,包括:处理单元,用于配置第一逻辑信道,所述第一逻辑信道对应第一业务和第二业务;通信单元,用于在所述第一逻辑信道上向第二装置发送第一信息,所述第一信息中包括第二数据,其中,所述第二数据包括所述第二业务的数据,所述第一业务不同于所述第二业务。
- 根据权利要求28所述的装置,其特征在于,所述第一业务的数据来自第一协议栈;所述第二业务的数据来自第二协议栈;所述第一协议栈与所述第二协议栈所支持的协议不同。
- 根据利要求28或29所述的装置,其特征在于,所述第一业务的数据包括音视频数据,所述第二业务的数据包括音视频控制信息。
- 根据权利要求28-30任一所述的装置,其特征在于,所述第一信息中还包括信道标识信息和/或协议指示信息,所述信道标识信息用于指示所述第一逻辑信道;所述协议指示信息用于指示第二协议栈所支持的协议,所述第二协议栈对应所述第二业务。
- 一种通信装置,其特征在于,包括:通信单元,用于在第一逻辑信道上接收来自第一装置的第一信息,所述第一逻辑信道对应第一业务和第二业务,所述第一信息中包括第二数据,其中,所述第二数据包括所述第二业务的数据,并且所述第一业务不同于所述第二业务;处理单元,用于获取所述第一信息中的所述第二数据。
- 根据权利要求32所述的装置,其特征在于,所述第一业务的数据来自第一协议栈;所述第二业务的数据来自第二协议栈;所述第一协议栈与所述第二协议栈所支持的协议不同。
- 根据利要求32或33任一所述的装置,其特征在于,所述第一业务的数据包括音视频数据,所述第二业务的数据包括音视频控制信息。
- 根据权利要求32-34任一所述的装置,其特征在于,所述第一信息中还包括信道标识信息和/或协议指示信息,所述信道标识信息用于指示所述第一逻辑信道;所述协议指示信息用于指示第二协议栈所支持的协议,所述第二协议栈对应所述第二业务。
- 一种通信系统,其特征在于,包括:用于实现如权利要求1-13任一项所述方法的第一装置;以及,用于实现如权利要求14-27中任一项所述的方法的第二装置。
- 一种计算机可读存储介质,其特征在于,包括计算机程序,当所述计算机程序在计算机上运行时,使得所述计算机执行如利要求1-27中任一项所述的方法。
- 一种计算机程序产品,其特征在于,包括指令,当所述指令在计算机上运行时,使得所述计算机执行如权利要求1至13任一项所述的方法,或者执行如权利要求14-27任一项所述的方法。
- 一种终端设备,其特征在于,包括:至少一个处理器和通信接口;所述通信接口用于为所述至少一个处理器提供程序指令,当所述程序指令被执行时,使得所述终端设备执行如权利要求1至13任一项所述的方法,或者,执行如权利要求14-27任一项所述的方法。
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