WO2022188686A1 - Procédé et dispositif de communication - Google Patents

Procédé et dispositif de communication Download PDF

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Publication number
WO2022188686A1
WO2022188686A1 PCT/CN2022/078991 CN2022078991W WO2022188686A1 WO 2022188686 A1 WO2022188686 A1 WO 2022188686A1 CN 2022078991 W CN2022078991 W CN 2022078991W WO 2022188686 A1 WO2022188686 A1 WO 2022188686A1
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data
target
service
transmission
remaining
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PCT/CN2022/078991
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English (en)
Chinese (zh)
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张彦清
李雪茹
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/22—Negotiating communication rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a communication method and device.
  • logical channel In a communication system, three main channels are defined, namely: logical channel, transport channel and physical channel.
  • the logical channel is used to provide data transmission services, and different logical channels are defined for different data transmission services; the transmission channel is used to define the method and characteristics of data transmission in the air interface, and the physical channel is used to define the bearer of the signal transmitted in the air interface.
  • multiple logical channels can be multiplexed on the same transport channel, that is, service data on multiple logical channels can be scheduled to the same transport channel and then transmitted through the physical channel.
  • the media access control (MAC) layer needs to schedule the MAC service data unit (SDU) in the logical channel to the MAC protocol data in the transmission channel.
  • SDU MAC service data unit
  • Unit protocol data unit
  • the token bucket mechanism is used in the communication system to realize the resource mapping from the logical channel to the transmission channel.
  • the service data in the MAC SDU of each logical channel is mapped to the transmission on the MAC PDU of the channel.
  • the number of tokens contained in the token bucket corresponding to each logical channel directly affects the data volume of the service data mapped by the logical channel.
  • the tokens in the token bucket corresponding to each logical channel are based on the speed-prioritized bit rate (PBR) increase evenly.
  • PBR is a static minimum guaranteed bit rate allocated by the network device side for the logical channel, and this value is a fixed value.
  • the PBR configured by the network device for each logical channel directly affects the rate at which the service data in the logical channel is mapped to the transmission channel, thereby affecting the service data transmission delay of the service corresponding to the logical channel.
  • the terminal equipment in the communication system is required to have a higher or more flexible transmission rate.
  • the real-time broadband communication (RTBC) scenario is designed to support large bandwidth and low latency. The purpose is to increase the bandwidth under a given latency and certain reliability requirements, and to create an immersive human interaction with the virtual world. experience.
  • this scenario includes extended reality (extended reality, XR) services that require ultra-high bandwidth and ultra-low latency.
  • the XR service requires the terminal device to upload images, and the data volume of different images after encoding fluctuates greatly (for example, in a group of picture (GOP), the data volume of the encoded I-frame image is large, while the Generally, the data volume of the encoded P frame image is small), but the transmission delay requirements of each frame image are the same.
  • the bit rate is set, therefore, the image with a large amount of data may not be fully transmitted within the set transmission delay. Therefore, the PBR static allocation method of the logical channel in the above token bucket mechanism will greatly affect the transmission delay of the XR service, thereby reducing the user experience of the service.
  • the present application provides a communication method and device, which are used to ensure the transmission delay of service data of a terminal device and improve the user experience of the service.
  • an embodiment of the present application provides a communication method, which can be applied to a sending end that sends service data in the communication system shown in FIG. 4 , for example, a terminal device in the uplink direction of a mobile communication system or a network device in the downlink direction.
  • a terminal device in the uplink direction of a mobile communication system or a network device in the downlink direction for example, a terminal device in the uplink direction of a mobile communication system or a network device in the downlink direction.
  • another example is any terminal device in the sidelink communication system.
  • the method is described below by taking a communication device as an example, and the method includes the following steps:
  • the communication device determines the remaining data volume of the first service data of the target service and the first remaining transmission time of the first service data; and then determines the corresponding target service according to the remaining data volume and the first remaining transmission time The first priority bit rate PBR; wherein, the first remaining transmission time is the difference between the first target transmission duration and the duration of transmitting the first service data; the first target transmission duration is determined according to the transmission delay of the target service.
  • the communication device can dynamically determine the PBR corresponding to the target service according to the remaining data volume and the remaining transmission time of the service data of the target service, so as to transmit the service data according to the PBR; wherein, the remaining transmission time is determined according to the target service
  • the communication device when the communication device is a terminal device in a mobile communication system or a sidelink communication system, the communication device may receive indication information from a network device, where the indication information is used to indicate the target service transmission delay.
  • the network device can configure the transmission delay of the target service for the terminal device, so that when the terminal device sends each service data, the target transmission duration of the service data can be determined according to the transmission delay of the target service.
  • the communication device may also perform the following steps according to the PBR:
  • the value of a first variable (that is, the number of tokens corresponding to the target logical channel) is increased, and the first variable corresponds to the target logical channel; wherein, the target logical channel corresponds to the target service a logical channel; according to the value of the first variable, multiplex the remaining data of the first service data to a target transmission channel; wherein, the target transmission channel is a transmission channel corresponding to the target logical channel.
  • the communication device can use the token bucket mechanism to transmit the remaining data of the first service data according to the calculated first PBR.
  • the communication device may further determine the size of the first service data multiplexed into the target transmission channel. the total size; and then reduce the value of the first variable according to the total size of the first service data multiplexed to the target transmission channel.
  • the communication device can update the value of the first variable according to the amount of data multiplexed to the target transmission channel each time.
  • the communication The device may also reduce the remaining data amount of the first service data according to the total size of the partial data; and reduce the first service data according to the time consumed by multiplexing the partial data to the target transmission channel this time. a remaining transmission time; then when the first remaining transmission time is greater than 0, according to the updated remaining data volume of the first service data and the first remaining transmission time, the first remaining transmission time corresponding to the target service is determined.
  • Two PBR Two PBR.
  • the communication device can continue to dynamically calculate the PBR when the first service data is not all multiplexed into the target transmission channel, so that the newly calculated PBR can be used to continue to transmit the remaining data of the first service data.
  • the communication device may also discard the remaining data of the first service data.
  • the communication device When the first remaining transmission time is less than or equal to the judgment threshold, it indicates that the current actual transmission time of the first service data has not met the transmission delay requirement of the target service. With this design, the communication device no longer multiplexes the remaining data of the first service data to the target transmission channel, so that the vacated resources can be used to continue multiplexing the next service data to the target transmission channel.
  • the communication device may also, according to the last calculated PBR (that is, the first PBR), Increase the value of the first variable.
  • the communication device can no longer dynamically calculate the PBR. Therefore, the communication device can select the last calculated PBR to continue to increase the value of the first variable, so as to continue to transmit the remainder of the first service data. data.
  • the communication device when the first service data times out, if the communication device continues to describe the remaining data of the first service data; then in order to ensure the next service data (second service data) after the first service data as much as possible.
  • the transmission duration can meet the requirements of the transmission delay of the target service as much as possible, and the communication device can start the timing of the occupation duration according to the arrival time of the second service data, as shown in the following two ways:
  • Manner 1 Before the first remaining transmission time is less than or equal to 0, determine that the second service data of the target service reaches the target logical channel; when the first remaining transmission time is less than or equal to 0, start to Occupy time for timing;
  • Method 2 After the first remaining transmission time is less than or equal to 0, and before all the first service data is multiplexed to the target transmission channel, determine that the second service data of the target service arrives at the target logic channel; when the second service data arrives, start timing the occupied duration;
  • the communication device After starting the timing of the occupied time, when all the first service data is multiplexed to the target transmission channel, the communication device stops timing the occupied time; then the communication device initializes the remaining data of the second service data The amount is the total data amount of the second service data, and the second remaining transmission time of the second service data is initialized as the second target transmission duration; wherein, the second target transmission duration is the transmission of the target service and determining the third PBR corresponding to the target service according to the remaining data amount of the second service data and the second remaining transmission time.
  • the communication device can sample the above design to count the occupied time of the first service data.
  • the second target transmission duration of the second service data can be set equal to the duration of the target service. The difference between the transmission delay and the occupied duration of the first service data.
  • an embodiment of the present application provides a communication method, the method can be applied to a network device, and the method includes the following steps:
  • the network device determines the transmission delay of the target service; and then sends indication information to the terminal device, where the indication information is used to indicate the transmission delay of the target service.
  • the network device can configure the transmission delay of the target service for the terminal device, so that when the terminal device sends each service data, the target transmission duration of the service data can be determined according to the transmission delay of the target service.
  • an embodiment of the present application provides a communication apparatus, including a unit for performing the steps of the method provided in any of the above aspects of the present application.
  • an embodiment of the present application provides a communication device, comprising at least one processing element and at least one storage element, wherein the at least one storage element is used to store programs and data, and the at least one processing element is used to execute any
  • An aspect provides the steps of a method.
  • an embodiment of the present application provides a communication system, including: a terminal device for implementing the method provided in the first aspect above, and a network device for implementing the method provided in the second aspect above.
  • an embodiment of the present application further provides a computer program, which, when the computer program runs on a computer, causes the computer to execute the method provided in any of the foregoing aspects.
  • an embodiment of the present application further provides a computer storage medium, where a computer program is stored in the computer storage medium, and when the computer program is executed by the computer, the computer is made to execute the method provided in any of the above aspects.
  • an embodiment of the present application further provides a chip, where the chip is configured to read a computer program stored in a memory, and execute the method provided in any of the foregoing aspects.
  • an embodiment of the present application further provides a chip system, where the chip system includes a processor for supporting a computer device to implement the method provided in any one of the foregoing aspects.
  • the chip system further includes a memory for storing necessary programs and data of the computer device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • an embodiment of the present invention provides an apparatus, including a unit for executing the method described in any embodiment of the present invention.
  • FIG. 1 is a schematic diagram of an encoding method of an image frame in a GOP provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of the data volume after encoding of each graphic frame in a GOP provided by an embodiment of the present application;
  • FIG. 3 is an example diagram of MAC layer scheduling of a terminal device according to an embodiment of the present application.
  • FIG. 4 is an architectural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a network topology of a communication system according to an embodiment of the present application.
  • 6A is a flowchart of a communication method provided by an embodiment of the present application.
  • 6B is a schematic diagram of a dynamic PBB and a static PBR variation curve provided by an embodiment of the application;
  • FIG. 7 is an example flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 8 is an example diagram of MAC layer scheduling of a terminal device according to an embodiment of the present application.
  • FIG. 9 is a structural diagram of a communication device according to an embodiment of the present application.
  • the present application provides a communication method and device, which are used to ensure the transmission delay of service data of a terminal device and improve the user experience of the service.
  • the method and the device are based on the same technical concept. Since the principles of the method and the device for solving problems are similar, the implementation of the device and the method can be referred to each other, and repeated descriptions will not be repeated.
  • a network device is a device that connects a terminal device to a wireless network in a communication system.
  • the network device as a node in a wireless access network, may also be called a base station, may also be called a radio access network (radio access network, RAN) node (or device), or an access point (access point, AP).
  • RAN radio access network
  • AP access point
  • network equipment generation Node B (gNB), transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), access point (access point, AP) base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (such as , home evolved NodeB, or home Node B, HNB), or base band unit (base band unit, BBU), enterprise LTE discrete narrowband aggregation (Enterprise LTE Discrete Spectrum Aggregation, eLTE-DSA) base station, etc.
  • gNB generation Node B
  • TRP transmission reception point
  • eNB evolved Node B
  • RNC radio network controller
  • Node B Node B
  • AP access point
  • base station controller base station controller
  • BTS base transceiver station
  • home base station such as , home evolved NodeB, or home Node B, H
  • the network device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node.
  • CU centralized unit
  • DU distributed unit
  • This structure separates the protocol layers of the eNB in the long term evolution (LTE) system. The functions of some protocol layers are centrally controlled by the CU, and the remaining part or all of the functions of the protocol layers are distributed in the DU, which is controlled by the CU. Centralized control of DU.
  • LTE long term evolution
  • a terminal device is a device that provides voice and/or data connectivity to users.
  • a terminal device may also be called a user equipment (user equipment, UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), and the like.
  • the terminal device may be a handheld device with a wireless connection function, various in-vehicle devices, a roadside unit, and the like.
  • some examples of terminal devices are: mobile phone (mobile phone), tablet computer, notebook computer, PDA, mobile internet device (MID), smart point of sale (POS), wearable device, Virtual reality (VR) equipment, augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, remote medical surgery wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, Smart meters (smart water meter, smart electricity meter, smart gas meter), eLTE-DSA UE, equipment with integrated access and backhaul (IAB) capability, on-board electronic control unit (ECU) etc., on-board computer, on-board cruise system, telematics box (T-BOX), etc.
  • IAB integrated access and backhaul
  • a communication device is a device with a communication function in a communication system, which may be a network device or a terminal device, which is not limited in this application.
  • channel channel (channel), the channel of communication, is the medium of signal/data transmission.
  • channels There are mainly three kinds of channels defined in the communication system, namely logical channel, transport channel and physical channel. The different types of channels are described below:
  • Logical channels are used to provide data transmission services. Different logical channels are defined for different data transmission services, such as common transaction channel (CTCH), dedicated transaction channel (DTCH), and broadcast control channel (broadcast). control channel, BCCH), common control channel (common control channel, CCCH), etc.
  • CCH common transaction channel
  • DTCH dedicated transaction channel
  • BCH broadcast control channel
  • BCCH common control channel
  • CCCH common control channel
  • Transport channels are used to define the way and characteristics of data transmission in the air interface, such as random access channel (RACH), downlink shared channel (DSCH), uplink shared channel (USCH) , broadcast channel (broadcast channel, BCH), common packet channel (common packet channel, CPCH), etc.
  • RACH random access channel
  • DSCH downlink shared channel
  • USCH uplink shared channel
  • BCH broadcast channel
  • CPCH common packet channel
  • the physical channel is used to define the bearer of the signal transmitted in the air interface.
  • the physical channel can define specific time-domain resources and frequency-domain resources, scrambling codes, and so on.
  • the physical channels may include: a physical random access channel (PRACH), a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), a physical uplink shared channel (PUSCH), and a physical uplink shared channel (PUSCH).
  • PRACH physical random access channel
  • PDSCH physical downlink shared channel
  • PUSCH physical uplink shared channel
  • PUSCH physical uplink shared channel
  • PUSCH physical uplink shared channel
  • PUSCH physical uplink shared channel
  • PUSCH physical uplink shared channel
  • PCPCH physical uplink shared channel
  • the amount of data is the value obtained by measuring the size of the data using the same unit of measurement set.
  • Services which are certain functions or services implemented by terminal equipment, or data streams related to services at the application layer are transmitted.
  • the services involved in the present application may be classified into different types according to different angles.
  • services can be divided according to the severity of delay requirements, then services can be divided into ordinary services (services with transmission delay greater than or equal to the first threshold) and low-latency services (transmission delay less than the first threshold) , real-time services (transmission delay is less than the second threshold), etc.
  • the second threshold is smaller than the first threshold.
  • services may also be classified according to functions or types of services, and then services may be classified into data services, voice services, video services, XR services, and the like.
  • the XR business mainly includes virtual reality (virtual reality, VR), augmented reality (AR), mixed reality (mixed reality, MR) and other virtual and reality interaction services.
  • Terminal devices that support XR services are generally equipped with cameras to capture images of the current scene, and the terminal devices need to continuously upload the collected images. Therefore, XR services have higher requirements on the data transmission delay and bandwidth of the terminal devices.
  • services can also be divided according to the types of data streams.
  • the service of the application layer includes video stream and audio stream
  • the video stream can be one service
  • the audio stream can be another service.
  • the terminal device For another example, no matter what kind of function or service the terminal device expects to implement, it needs to be implemented by the terminal device by establishing a connection with a corresponding data network (data network, DN). Moreover, when implementing different functions or services, the data networks that the terminal devices need to connect to are also different. Therefore, services can also be divided through the data network connected to the terminal equipment.
  • data network data network
  • the embodiment of the present application does not limit the representation of services.
  • the services can be divided by time delay requirements, by function or service type, by data stream type, or by The Data Network Number (DNN) division requested by the terminal device.
  • DNN Data Network Number
  • the transmission delay of the service that is, the time delay requirement of the data packet of the service from the sending device to the receiving device, can reflect the QoS of the service.
  • the transmission delay may also be referred to as an air interface packet delay budget (air interface packet delay budget), a delay upper limit, or an air interface delay, and the like.
  • the transmission delay of the service is the delay requirement from the UE MAC to the gNB/eNB packet arrival of the service data packet from the MAC layer of the UE to the base station.
  • Token which is a resource used by the MAC layer scheduling process of the communication device to control the amount of transmitted data.
  • the number of tokens will change continuously, that is, the number of tokens is a variable.
  • the token data may also be referred to as a token quantity variable, a variable, or the like.
  • changing the number of tokens can be understood as changing the value of the token quantity variable (or variable)
  • increasing the number of tokens can be understood as increasing the value of the variable
  • reducing the number of tokens can be understood as reducing the value of the variable.
  • the "first variable" is the number of tokens corresponding to the target logical channel.
  • the terminal device sends service data as an example for description.
  • the service data of the XR service can be video coded using the H.264/H.265 video coding standard.
  • Multiple images generated by the terminal device performing the XR service can be divided into multiple GOPs.
  • each GOP may contain the same number of images.
  • the terminal device can perform intra-frame coding or inter-frame coding on each frame of image in each GOP.
  • the first frame image in each GOP can be called an intra-frame coding frame, abbreviated as an I frame, which can be independently encoded and decoded; and subsequent frame images can be called inter-frame coding frames.
  • inter-frame coding frame including: predictive coding frame (predicated frame) (referred to as P frame), bidirectional predictive coding frame (bidirectional predicted frame) (referred to as B frame).
  • P frame predictive coding frame
  • B frame bidirectional predictive coding frame
  • the inter-coded frame needs to be coded and decoded based on the previously coded image, so as to improve the codec compression performance and reduce the data volume of the transmitted service data.
  • the data amount of the encoded first frame image (ie, I frame) is significantly larger than that of the encoded subsequent frame image (ie, P frame or B frame).
  • the data amount of each encoded P frame is also different.
  • the data amount of the encoded fourth frame image is about twice the data amount of the encoded second frame image.
  • the transmission delay of the XR service is the transmission delay of each frame of image, that is, the transmission delay of each frame of image is required to be the same (for example, 10 milliseconds), and the XR service has higher requirements on the transmission delay, so the amount of data is large.
  • the images have more stringent requirements on the transmission rate. If the transmission rate of the terminal equipment for all images is the same, the terminal equipment may not be able to complete the transmission of the entire image (for example, the I frame in the GOP) within the specified transmission delay. This has a great impact on the XR service, and further reduces the user experience of the service.
  • XR services are only examples, and do not constitute a limitation that the methods provided in the embodiments of the present application can be applied to services.
  • the methods provided in the embodiments of the present application can be applied to various services, for example, services with large fluctuations in the data volume of service data, services with strict requirements on transmission delay, etc.
  • Specific examples are video call services, artificial intelligence (artificial intelligence) intelligence, AI) business, etc.
  • the token bucket mechanism is described below.
  • the token bucket mechanism is used in the communication system to limit the data traffic of the communication device to a specific bandwidth, that is, a certain number of tokens are placed in the token bucket, and one token is allowed to send a set amount of data (The following takes 1Byte as an example) data. Every time 1Byte of data is transmitted, a token needs to be removed from the token bucket. When there are no tokens in the token bucket, sending data of any size will be considered as exceeding the rated bandwidth of the communication device. It can be understood that the token bucket is like a pool, and the token is like water. The tokens in the token bucket can not only be removed, but also continuously added. In order to ensure that the communication device can continuously send data, it is necessary to continuously add tokens to the token bucket.
  • the increasing speed of the tokens in the token bucket also determines the speed at which the communication device sends data.
  • the bandwidth of the communication device is 1000 bytes per second (Bytes per second, Bps). As long as 1000 tokens are added to the token bucket every second, the bandwidth of the communication device can be guaranteed.
  • the MAC layer needs to schedule the service data carried in the MAC SDU located in the logical channel to the MAC PDU in the transmission channel.
  • the MAC layer of the communication device needs to maintain a token bucket for each logical channel and parameters corresponding to the token bucket.
  • Each token is used to transfer a set amount of data.
  • the parameters corresponding to each token bucket include: a variable of the number of tokens in the token bucket, PBR, and the depth of the token bucket (bucket size duration, BSD) (optional).
  • PBR the number of tokens in the token bucket
  • BSD bucket size duration
  • the PBR and the BSD are configured by the (radio resource control, RRC) layer of the network device in the communication system.
  • the depth BSD of the token bucket that is, the maximum capacity of the token bucket, the threshold of the maximum number of tokens that can be contained, or the maximum amount of data that can be transmitted according to the tokens in the token bucket.
  • BSD can be directly set to a set threshold for the number of tokens; or BSD can be represented by time, for example, in seconds (s) or milliseconds (ms); or directly set to a set threshold of data volume.
  • the communication device implements data exchange between the MAC layer and the physical layer according to the transmission time interval (TTI), and each TTI performs one transmission, or each TTI corresponds to a transmission moment .
  • TTI may also be called a scheduling period or a transmission period, that is, two adjacent transmission times (transmission opportunity, scheduling opportunity).
  • the TTI may be 1 ms, 2 ms, 0.5 ms, or the like. It should be noted that in some mobile communication systems (such as 5G NR systems), the TTI may change.
  • token increment time interval T also called token increment period T
  • the token increment time interval T may be the same as or different from the value of TTI, which is not limited in this application.
  • the number of tokens in the token bucket cannot exceed PBR*BSD, and in each T, the number of tokens in the token bucket increases at the rate of PBR*T.
  • the RRC layer of the network device may also allocate each logical channel of the communication device priority.
  • the priority of any logical channel determines the order in which the MAC SDU of the logical channel is scheduled to the MAC PDU of the transport channel among multiple logical channels, that is, the MAC SDU of the logical channel with higher priority will be preferentially scheduled to the MAC SDU in the PDU.
  • the RRC layer of the network device allocates corresponding PBRs for each logical channel of the communication device, so as to avoid the occurrence of low-priority logical channels that cannot be multiplexed to MAC PDU resources. Case.
  • a communication device when it sends data, it generally processes the data in the order from high to low of the protocol stack, that is, the MAC SDU and the radio link control (RLC) PDU are in one-to-one correspondence of. That is, the size of the MAC SDU depends on the RLC PDU, and the RLC PDU is divided from the RLC SDU, and the segmentation criterion depends on the size of the MAC PDU. That is, the MAC layer can decide how much data in the RLC SDU is divided into one RLC PDU according to the idle resources in the MAC PDU (that is, determine the size of the RLC PDU (or MAC SDU)).
  • RLC radio link control
  • the MAC layer of the communication device can use the token bucket algorithm to multiplex the MAC SDUs in the logical channel to the MAC PDUs of the transmission channel.
  • the MAC layer uses the token bucket algorithm to multiplex the RLC SDUs in the logical channel.
  • MAC PDU to the transport channel.
  • the MAC layer divides the RLC SDU into at least one RLC PDU, it also configures a header (Header) for each RLC PDU. Therefore, compared with the data amount of the RLC SDU, the sum of the data amount of at least one RLC PDU obtained by dividing the RLC SDU will increase the data amount of at least one packet header.
  • the data volume of the packet header is generally small (for example, one packet header is 8 bits), it can be ignored relative to the data volume of the service data carried by the RLC SDU.
  • the MAC layer of the communication device can use the token bucket algorithm to realize multiplexing of multiple logical channels to the MAC layer transmission channel, that is, the amount of data multiplexed into the transmission channel from the logical channel is determined according to the number of tokens of each logical channel.
  • the MAC layer of the communication device maintains a variable B j for the jth logical channel, which indicates the number of tokens in the token bucket corresponding to the logical channel (that is, the number of tokens remaining in the token bucket). , or the number of tokens available in the token bucket), and each token is used to transfer a fixed amount of data.
  • j is a non-negative integer used to identify the jth logical channel.
  • Bj is initialized to 0 when the jth logical channel is established, and PBR ⁇ T tokens are added in each T.
  • the MAC layer scheduling process performed by the communication device it may be performed according to the following principles:
  • the MAC layer multiplexes the data in the multiple logical channels to the transmission channel according to the logical channel priority from high to low.
  • the MAC layer multiplexes the data of the corresponding data amount in the RLC SDU of the target logical channel into the MAC PDU according to the value of B j of the target logical channel.
  • B' can be greater than B j .
  • the MAC layer multiplexes the data in the logical channel into the remaining resources of the MAC PDU according to the descending order of the logical channel priority, and This process does not consume the token count of the logical channel.
  • the data in the logical channel with the lower priority can continue to be multiplexed into the MAC PDU.
  • FIG. 3 the process of performing MAC layer scheduling by the communication device will be described in detail.
  • the corresponding token numbers are B1, B2, and B3, and B1, B2, and B3 are all greater than 0.
  • the present application numbers the RLC SDUs in each logical channel, that is, RLC SDUs a-b, where a represents the logical channel, and b represents the number of the RLC SDUs in the logical channel.
  • the RLC SDUs to be transmitted in logical channel 1 are recorded as RLC SDU1-1, RLC SDU1-2; the RLC SDUs to be transmitted in logical channel 2 are recorded as RLC SDU2-1, RLC SDU2-2, RLC SDU2-3; RLC SDUs to be transmitted in logical channel 3 are recorded as RLC SDU3-1 and RLC SDU3-2.
  • the RLC SDUs in logical channel 1 with the highest priority are first multiplexed into MAC PDUs, as shown in Figure 3:
  • the MAC layer will give priority to the data in the RLC SDU1-1 that is equal to the amount of idle resources in the MAC PDU.
  • the amount of data is multiplexed into the MAC PDU (at this time, in the logical channel, the RLC SDU1-1 is segmented, the MAC PDU is full, and there are no more idle resources);
  • the MAC layer preferentially multiplexes all the data in the RLC SDU1-1 to the MAC PDU.
  • the MAC layer continues to follow the above principles, the next token
  • the RLC SDUs of the logical channel whose number is greater than 0 are multiplexed into the MAC PDU, that is, if B2>0, continue to multiplex the data in the RLC SDU2-1 in the logical channel 2 into the MAC PDU.
  • the MAC layer reduces the number of tokens B1, B2, B3 of each logical channel multiplexing transmission channel consumes according to the logical channel, and at each token increment time In the interval T, the speed increases according to PBR1*T, PBR2*T, and PBR3*T respectively.
  • the number of tokens consumed is greater than the current token of the logical channel number, the token data for that logical channel will become negative.
  • the MAC layer will re-multiplex all logical channels with the number of tokens greater than 0 according to the The priority of the logical channel is in descending order.
  • the RLC SDU of the logical channel is multiplexed into the MAC PDU, that is, the logical channel has the opportunity to be multiplexed into the MAC PDU only after the logical channel data with a higher priority than the logical channel is all transmitted. .
  • the MAC layer multiplexes the RLC SDUs in the respective logical channels into the MAC PDUs according to the number of tokens in each logical channel. If there are still idle resources in the MAC PDUs at this time, the MAC layer continues to assign the logical channels according to the priority of the logical channel. The RLC SDU in the logical channel multiplexes the idle resources in the MAC PDU.
  • the MAC layer preferentially assigns the remaining data in logical channel 1 (at least one RLC SDU, the data in the remaining data only includes RLC SDU1-2 as an example) is multiplexed into the MAC PDU, regardless of the size of the token number B1 of the current logical channel 1, and this multiplexing does not consume logical channels 1 token, as shown in Figure 3, including:
  • the MAC layer multiplexes all the data in the RLC SDU1-2 into the MAC PDU;
  • the MAC layer multiplexes part of the data in the RLC SDU1-2 equal to the amount of idle resources in the MAC PDU into the MAC PDU .
  • the MAC layer continues to multiplex the remaining data in logical channel 2 according to the above method. into the MAC PDU. ...and so on, until the MAC PDU no longer has idle resources or the remaining data in each logical channel is multiplexed into the MAC PDU.
  • the amount of idle resources in the MAC PDU is less than or equal to the data amount of the remaining data in logical channel 1
  • the MAC layer multiplexes part or all of the remaining data in logical channel 1 into the MAC PDU. At this time, the MAC PDU cannot Residual data in multiplexing other logical channels.
  • the MAC layer transmits the MAC PDU to the physical layer for further transmission by the physical layer.
  • PBR is a fixed static variable allocated by the network device, and the network device may consider the average bit rate of the logical channel during allocation.
  • the data volume of service data generated in some services may fluctuate greatly.
  • the data volume of different frame images in a GOP varies greatly, but the transmission delay requirement of each frame image is The same, so that each frame of images has different requirements on the transmission rate.
  • the PBR is a fixed value, which may cause the transmission rate to fail to meet the transmission requirements of images with a large amount of data, thus increasing the transmission delay.
  • the data amount of each frame of image after encoding varies greatly, and the transmission delay requirements of each frame of image are the same.
  • the data volume of the first frame image after encoding is about 5 times that of the second frame image after encoding, which means that the transmission rate of the first frame image after encoding is expected to be the transmission rate of the second frame image after encoding. about 5 times.
  • the PBR is a fixed value, the transmission rate of the terminal device cannot be changed with the change of the transmission rate requirements of different images, and eventually some images with a large amount of data cannot be transmitted within the specified transmission delay.
  • the embodiments of the present application provide a communication method and device. The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
  • FIG. 4 shows the architecture of a possible communication system to which the communication method provided by the embodiment of the present application is applicable.
  • the communication system includes: a network device, and at least one terminal device (terminal device a-terminal device g in FIG. 4 ).
  • the network equipment is an entity that can receive and transmit wireless signals on the network side, and is responsible for providing wireless access-related services for terminal equipment within its coverage, realizing physical layer functions, resource scheduling and wireless resource management, quality of service ( Quality of Service, QoS) management, wireless access control and mobility management functions.
  • the network device may be a base station, an AP or other RAN device, which is not limited in this application.
  • the terminal device is an entity capable of receiving and transmitting wireless signals on the user side, and needs to access the network through the network device.
  • the terminal device can be various devices that provide voice and/or data connectivity for the user, for example, as shown in FIG.
  • the communication system shown in FIG. 4 may support a sidelink (sidelink) communication technology.
  • the sidelink communication technology is a near-field communication technology that enables direct connection between terminal devices, also known as a proximity services (proximity services, ProSe) communication technology, or a D2D communication technology.
  • a plurality of terminal devices that are geographically close together and support sidelink communication may form a sidelink communication system (also referred to as a sidelink communication subsystem, a sidelink system, etc.).
  • two terminal devices also called sidelink devices
  • the sidelink communication technology can support broadcast, multicast and unicast transmission within the coverage of network equipment, outside the coverage of network equipment, and in scenarios where network equipment is partially covered.
  • different sidelink communication systems can be formed for different application scenarios.
  • the user's smartphone can form a sidelink communication system with the in-vehicle equipment installed in the car, as shown in the figure.
  • the user's smartphone and the VR glasses and/or VR glasses may form a sidelink communication system, as shown in the figure.
  • the user's smartphone and the HMD can form a sidelink communication system, as shown in the figure.
  • in-vehicle devices between different cars can also form a sidelink communication system, or mobile phones on different cars can form a sidelink communication system.
  • an embodiment of the present application further provides a network topology architecture of the communication system, as shown in FIG. 5 .
  • the network device and the terminal device may be connected through an air interface (ie, a Uu interface), so as to implement communication between the terminal device and the network device (this communication may be referred to as Uu communication, or cellular network communication).
  • Uu communication ie, a Uu interface
  • a direct link can be established for sidelink data transmission through the ProSe communication 5 (ProSe communication 5, PC5) interface.
  • both the Uu interface and the PC5 interface include a control plane protocol stack and a user plane protocol stack.
  • the user plane protocol stack includes at least the following protocol layers: physical (PHY) layer, MAC layer, radio link control (radio link control, RLC) layer and packet data convergence protocol (packet data convergence protocol, PDCP) Layer, service data adaptation protocol (service data adaptation protocol, SDAP) layer;
  • the control plane protocol stack at least includes the following protocol layers: physical layer, MAC layer, RLC layer, PDCP layer, radio resource control (radio resource control, RRC) Floor.
  • the terminal device can implement specific services by communicating with network devices or other terminal devices.
  • a smartphone can communicate with a network device to realize video calling services
  • VR glasses or AR glasses can communicate with a smartphone or network device to realize XR services, etc.
  • any communication device when any communication device (terminal device or network device) implements the target service, it can send service data of the target service to another communication device (network device or terminal device). Then in the process of sending service data, the MAC layer of the communication device can multiplex the service data carried by the RLC SDU in the logical channel to the MAC PDU in the transmission channel through the token bucket mechanism, so as to finally pass the Uu interface or PC5 interface.
  • the physical channel is transmitted to another communication device.
  • the network device can transmit VR service data to the terminal device through the token bucket mechanism; in the AR uplink and downlink transmission scenarios, the network device or the terminal device can use the token bucket mechanism to transmit VR service data to the terminal device.
  • the token bucket mechanism transmits AR service data to the opposite end; in the sidelink communication system, any terminal device can transmit various service data to another terminal device through the token bucket mechanism.
  • FIG. 4 is taken as an example, and does not constitute a limitation on the communication system to which the method provided by the embodiment of the present application is applicable.
  • the methods provided in the embodiments of the present application are applicable to communication systems or application scenarios of various types and standards.
  • the 5th Generation (5G) communication system Long Term Evolution (LTE) communication system, Wi-Fi system, Vehicle to Everything (V2X), Long Term Evolution-Vehicle Networking (LTE) -vehicle, LTE-V), vehicle to vehicle (V2V), Internet of Vehicles, Machine Type Communications (MTC), Internet of Things (IoT), Long Term Evolution-Machine to Machine ( LTE-machine to machine, LTE-M), machine to machine (machine to machine, M2M), the embodiment of the present application is not limited.
  • 5G 5th Generation
  • LTE Long Term Evolution
  • Wi-Fi Wireless Fidelity
  • V2X Vehicle to Everything
  • LTE Long Term Evolution-Vehicle Networking
  • LTE-V vehicle to vehicle
  • V2V Internet of Vehicles
  • MTC Machine Type Communications
  • IoT Internet of Things
  • LTE-machine to machine LTE-M
  • machine to machine machine to machine
  • the embodiment of the present application provides a communication method, which can be applied to the uplink direction in a mobile communication system composed of a terminal device and a network device (ie, the terminal device sends service data to the network device).
  • the method will be described in detail below with reference to the flowchart shown in FIG. 6A .
  • S600a The terminal device and the network device establish a wireless connection.
  • the terminal device may, but is not limited to, establish an RRC connection with the network device in the following ways:
  • the terminal device can establish an RRC connection with the network device through processes such as cell search, time synchronization, random access, and RRC connection establishment.
  • Manner 2 The terminal device establishes an RRC connection with the network device through the process of cell selection, cell reselection or cell handover.
  • Mode 3 The terminal device in the RRC idle state (RRC_idle) or the RRC inactive state (RRC inactive) can establish/restore the RRC connection with the network device through the RRC connection establishment/restoration process. At this point, the terminal device enters the RRC connected state.
  • the network device may establish at least one data bearer (data resource bearer, DRB) of the terminal device based on the RRC connection, so as to transmit service data of at least one service of the terminal device.
  • the data bearer is also called a radio bearer, and each data bearer corresponds to a logical channel in the MAC layer of the terminal device and the network device respectively.
  • the MAC layers of the terminal device and the network device need to establish a corresponding logical channel for each data bearer, so as to transmit the service data corresponding to the data bearer.
  • the terminal device may start executing the target service (that is, the terminal device opens a function, service or application that implements the target service, and requests to establish the target data bearer of the target service), through the above method
  • An RRC connection is established, and a target data bearer for transmitting the service data of the target service is established with the network device.
  • the MAC layers of the terminal device and the network device establish a target logical channel corresponding to the target data bearer.
  • the terminal device after the terminal device establishes the RRC connection with the network device, when the terminal device starts to execute the target service, it can send a bearer establishment request to the network device, so that the network device can establish a bearer establishment request for transmitting the target service.
  • the target data bearer of the business data wherein, in the process of establishing the target data bearer, the MAC layers of the terminal device and the network device establish a target logical channel corresponding to the target data bearer.
  • the terminal device and the network device can establish/restore the RRC connection through the traditional RRC connection establishment/restoration process, and establish the target data bearer of the target service through the traditional wireless bearer establishment/modification process.
  • the application examples are not repeated here.
  • the network device determines the transmission delay of the target service (that is, the air interface transmission delay of the target service), and sends indication information to the terminal device, where the indication information is used to indicate the transmission delay of the target service.
  • the terminal device receives the indication information from the network device, and determines the transmission delay of the target service according to the indication information.
  • the network device may determine the transmission delay of the target service in the following manner:
  • the network device stores transmission delays of multiple services, and the network device may determine the transmission delay of the target service requested by the terminal device from the transmission delays of the multiple services.
  • the transmission delay of the multiple services may be factory-configured, or specified by a protocol, or configured for a core network device, which is not limited in this application.
  • the network device may first determine the target service requested by the terminal device, and then determine the transmission delay of the target service according to the QoS information of the target service.
  • the QoS information of the target service may be acquired by the network device from the subscription information of the terminal device saved by the core network device, or configured by the core network device according to the subscription information of the terminal device.
  • the indication information may be an RRC message, and the RRC message carries the transmission delay of the target service.
  • the indication information may be downlink control information (DCI), and the DCI may include a first field that carries the transmission delay of the target service; or the DCI may include a first indication bit, the indication bit It is used to indicate the transmission delay of the target service.
  • DCI downlink control information
  • S600b may be performed after performing S600a, or performed during the process of performing S600a, which is not limited in this application.
  • the terminal device determines the remaining data amount of the first service data and the first The first remaining transmission time of a service data.
  • the first service data is any service data of the target service
  • the target transmission channel is the transmission channel corresponding to the target logical channel.
  • the first remaining transmission time is the difference between the first target transmission duration and the duration elapsed for transmitting the first service data, and the first target transmission duration is determined according to the transmission delay of the target service .
  • the remaining data amount of the first service data is the data amount of remaining data in the first service data that has not been multiplexed to the target transmission channel.
  • the elapsed time period for transmitting the first service data may be the sum of the TTIs elapsed by the terminal device from the moment when the terminal device starts to transmit the first service data to the current moment.
  • the terminal device after the first service data reaches the target logical channel, when the terminal device starts to transmit the first service data (the first service data has not been multiplexed at this time), the terminal device initializes the first service data.
  • the remaining data volume of the service is the total data volume of the first service data, and the first remaining transmission time is initialized as the first target transmission duration.
  • the terminal device in order to ensure that the transmission duration of the first service data meets the transmission delay requirement of the target service as much as possible, the terminal device may set the first target transmission duration to be less than or equal to the target transmission duration The transmission delay of the service. Further, in order to make the transmission duration of the first service data as long as possible, the terminal device may set the first target transmission duration to be equal to the transmission delay of the target service.
  • the terminal device may set the first target transmission duration to be equal to the transmission delay of the target service.
  • the terminal device can continue to transmit the previous service data, then in this case, if the Before the first service data arrives before the previous service data is all multiplexed to the target transmission channel, the terminal device will count the occupied time of the previous service data. When all the previous service data is multiplexed into the target transmission channel, the terminal device may set the first target transmission duration to be equal to the difference between the transmission delay of the target service and the occupied duration of the previous service data.
  • the terminal device may determine whether the first remaining transmission time of the first service data is greater than a judgment threshold after each time the terminal device determines/updates the first remaining transmission time of the first service data, where the judgment threshold is used to judge whether the service data times out , the judgment threshold can be set by the user, or stipulated by the protocol, or configured for the network equipment, or factory-configured by the terminal equipment, or default in the field; the judgment threshold is usually 0, but this The application does not limit the value of the judgment threshold.
  • the first remaining transmission time is greater than the judgment threshold, indicating that the actual transmission time of the current first service data meets the transmission delay requirement of the target service; and the first remaining transmission time is less than or equal to the judgment threshold, indicating that the actual transmission time of the current first service data has not been longer. Meet the transmission delay requirements of the target service.
  • the embodiments of the present application do not limit the value of the judgment threshold of the first remaining transmission time, and the embodiments of the present application use 0 as an example for description. In other scenarios, the judgment threshold may also be other set values. .
  • Steps S602 and S604 performed by the terminal device under the condition that the first remaining transmission time is greater than 0 will be described below.
  • the terminal device determines the first PBR according to the remaining data amount of the first service data and the first remaining transmission time.
  • the terminal device initializes the remaining data volume of the first service as the total data volume of the first service data, and initializes the first remaining transmission time as the total data volume of the first service data.
  • the terminal device increases the value of the number of tokens (ie, the first variable) corresponding to the target logical channel according to the first PBR. That is, in each token increment time interval T, the terminal device increases the first variable by the first PBR*T.
  • the terminal device may, at the first transmission moment, multiplex the remaining data of the first service data to the target transmission channel according to the value of the first variable.
  • the value of the first variable is greater than 0.
  • the terminal device Since the first service data can be carried in multiple RLC SDUs, in the process of multiplexing the remaining data of the first service data to the target transmission channel according to the value of the first variable, the terminal device needs to avoid as much as possible to RLC SDU fragmentation.
  • the process of multiplexing service data to the target transmission channel by the terminal device according to the value of the first variable is the same as the multiplexing process in the traditional token mechanism. Therefore, refer to The process shown in FIG. 3, or the specific description about the multiplexing process in the example shown in FIG. 7 or FIG. 8 (for example, the description in S704 in the example shown in FIG. The descriptions in A3 and A4), which will not be repeated here.
  • the terminal device In each transmission moment, for all logical channels whose number of tokens is greater than 0, the terminal device, in the order of logical channel priority from high to low, sequentially assigns the number of tokens in each logical channel according to the number of tokens in each logical channel.
  • the data is multiplexed to the target transmission channel;
  • the terminal device After completing the above steps, if there are remaining idle resources in the target transmission channel, the terminal device continues to multiplex the data in the logical channel into the remaining resources of the target transmission channel according to the descending order of the logical channel priority, and This process does not consume the token count of the logical channel.
  • the RLC SDU will not be segmented
  • the length of the segment should be maximized according to the amount of free resources of the MAC PDU;
  • the terminal device should transmit as much data as possible, that is, multiplex the data in the logical channel as much as possible in the MAC PDU.
  • the terminal device can multiplex the remaining data of the first service data to the target transmission channel, and then can transmit the first service data to the base station through the physical channel.
  • the terminal device After the first transmission time, the terminal device reduces the value of the first variable according to the total size (total size) of the first service data multiplexed to the target transmission channel at the first transmission time.
  • the total size of the first service data is only the size of the first service data multiplexed to the target transmission channel according to the value of the first variable. total size.
  • the terminal device can dynamically determine the first PBR of the target logical channel according to the remaining data volume and remaining transmission time of the first service data, so that the value of the first variable can be increased according to the first PBR, so that, At the first transmission moment, the remaining data of the first service data may be multiplexed to the target transmission channel according to the value of the first variable, so as to realize the transmission of the first service data.
  • the terminal device when the terminal device multiplexes part of the remaining data of the first service data to the target transmission channel in S603 (that is, not all the first service data is multiplexed to the target transmission channel), then After S604, the terminal device continues to perform S601, so that it can continue to pass through S602-S604 to dynamically update the first PBR, and continue to multiplex the remaining data in the first service data to the target according to the dynamically updated first PBR transmission channel.
  • the terminal device may update the remaining data amount of the first service data according to the total size of the partial data multiplexed to the target transmission channel in S603; time, update the first remaining transmission time.
  • the terminal device may update the data of the first service data according to the total size of the partial data multiplexed into the target transmission channel in S603 and the data volume of the first service data that is continuously multiplexed into the target transmission channel amount of data remaining.
  • updating the first remaining transmission time includes:
  • the terminal device updates the first remaining transmission time according to the TTI corresponding to the first transmission moment. That is, the first remaining transmission time is updated to be the first remaining transmission time minus the TTI.
  • the target service no longer needs the remaining data of the first service data.
  • the remaining data of the first service data is multiplexed to the target transmission channel, so that the vacated resources can be used to continue multiplexing the next service data to the target transmission channel.
  • a certain frame of image is not fully transmitted to the network device within the set transmission delay.
  • the processing/display time of the frame image has elapsed, and the processing/display is no longer required. Transmitting that frame of image also doesn't improve the user experience. Therefore, in order to avoid wasting resources and avoid affecting the transmission delay of the image of the next frame, the remaining data in the image of the frame may be discarded.
  • the terminal device when the first remaining transmission time of the first service data is greater than 0, the next service data (referred to as the second service data) of the first service data reaches the target logical channel, the terminal device needs to continue to multiplex the remaining data of the first service data to the target transmission channel until the first remaining transmission time of the first service data is less than or equal to 0.
  • the terminal device discards the remaining data of the first service data, and starts to start the second service data through the following steps.
  • Service data is multiplexed to the target transmission channel:
  • a second PBR corresponding to the target service is determined according to the remaining data amount of the second service data and the second remaining transmission time.
  • the terminal device may increase the value of the first variable according to the second PBR, and multiplex the second service data to the target transmission channel according to the value of the first variable.
  • the terminal device can refer to the above S601-S607, dynamically update the second PBR according to the remaining data volume of the second service data and the second remaining transmission time, and multiplex the second service data according to the dynamically updated second PBR to the target transmission channel, which will not be repeated here.
  • the terminal device discards the remaining data of the first service data when the first remaining transmission time is less than or equal to 0, or after the terminal device multiplexes all the first service data to the target transmission channel, the second service data arrives target logical channel, the terminal device also needs to adopt the above steps to initialize the remaining data volume and the second remaining transmission time of the second service data, and determine the second PBR, etc., the specific process will not be repeated here.
  • the terminal device increases the value of the first variable according to the last calculated first PBR; at the second transmission moment, multiplexes the remaining data of the first service data to the target transmission channel according to the value of the first variable.
  • the terminal device can no longer dynamically calculate the first PBR. Therefore, the terminal device can select the last calculated first PBR to continue to increase the value of the first variable.
  • S606 is an optional step.
  • the terminal device may also use the PBR statically configured by the network device to increase the value of the first variable, which is not limited in this application.
  • the terminal device After the second transmission time, the terminal device reduces the value of the first variable according to the total size of the first service data multiplexed to the target transmission channel at the second transmission time.
  • the terminal device multiplexes the remaining data of the first service data to the target transmission channel according to the value of the first variable, and the process of reducing the value of the first variable may refer to the description in the above S603-S604, It will not be repeated here.
  • the terminal device may execute S606-S607 cyclically to continuously multiplex the remaining data of the first service data to the target transmission channel.
  • this application since the actual transmission duration of the first service data does not meet the transmission delay requirement of the target service, in order to avoid affecting the transmission of the next service data (hereinafter referred to as the second service data), this application implements The example provides a deduction mechanism for occupied time.
  • the terminal device will count the occupied time of the first service data.
  • the second target transmission duration of the second service data can be set equal to the transmission time of the target service The difference between the delay and the occupied duration of the first service data.
  • Manner 1 Before the first remaining transmission time is less than or equal to 0, it is determined that the second service data of the target service arrives at the target logical channel. In this case, when the first remaining transmission time is less than or equal to 0, the terminal device starts to count the occupied duration.
  • Method 2 After the first remaining transmission time is less than or equal to 0, and before all the first service data is multiplexed to the target transmission channel, determine that the second service data of the target service arrives at the target logic channel. In this case, when the second service data arrives, the terminal device starts to count the occupied duration.
  • the terminal device stops timing the occupied duration; and starts to multiplex the second service data to the target transmission channel through the following steps:
  • a second PBR corresponding to the target service is determined according to the remaining data amount of the second service data and the second remaining transmission time.
  • the terminal device may increase the value of the first variable according to the second PBR, and multiplex the second service data to the target transmission channel according to the value of the first variable.
  • the terminal device can refer to the above S601-S607, dynamically update the second PBR according to the remaining data volume of the second service data and the second remaining transmission time, and multiplex the second service data according to the dynamically updated second PBR to the target transmission channel, which will not be repeated here.
  • the terminal device In the scenario where the terminal device adopts solution 2, if the second service data arrives at the target logical channel after the first service data is all multiplexed into the target transmission channel, the terminal device starts to start the second service through the following steps. Service data is multiplexed to the target transmission channel:
  • a second PBR corresponding to the target service is determined according to the remaining data amount of the second service data and the second remaining transmission time.
  • the terminal device may increase the value of the first variable according to the second PBR, and multiplex the second service data to the target transmission channel according to the value of the first variable.
  • the above-mentioned terminal device performs the MAC layer scheduling process may be specifically performed by the MAC layer of the terminal device, or performed for other protocol layers, which is not limited in this application.
  • An embodiment of the present application provides a communication method, in which a terminal device can dynamically determine a PBR corresponding to a target service according to the remaining data volume and remaining transmission time of service data of the target service, so as to transmit the service according to the PBR data; wherein, the remaining transmission time is the difference between the target transmission duration determined according to the transmission delay of the target service and the duration elapsed for transmitting the service data. Since the PBR of the target service changes dynamically according to the requirement of the transmission rate of the service data, as shown in FIG. 6B , compared with the PBR static allocation method, this method can improve the transmission delay within the specified target service as far as possible. The probability that all traffic data is transmitted. In a word, the method can ensure the transmission delay of the service data of the terminal device and improve the user experience of the service.
  • the embodiment of the present application provides another communication method, which can be applied to the downlink direction in a mobile communication system composed of a terminal device and a network device (ie, the network device sends service data to the terminal device).
  • the network device sends service data to the terminal device.
  • the transmission delay of the target service is determined.
  • the specific process can refer to the descriptions in S600a and S600b in FIG. 6A , which will not be described here.
  • the MAC layer of the network device can dynamically determine the PBR corresponding to the target service according to the steps in S601-S607, according to the remaining data volume and remaining transmission time of the first service data of the target service, so as to transmit the first service according to the PBR. Service data; wherein, the remaining transmission time is the difference between the target transmission duration determined according to the transmission delay of the target service and the duration elapsed for transmitting the first service data.
  • the process can be described in detail with respect to the corresponding steps in the embodiment shown in FIG. 6A , which will not be described here.
  • the embodiment of the present application also provides another communication method, which can be applied to a sidelink communication system composed of multiple terminal devices.
  • the MAC layer of the first terminal device (sending device) determines the transmission delay of the target service, and adopts the steps in S601-S607 to send the service data of the target service to
  • the second terminal device (receiving device)
  • the first terminal device may, but is not limited to, determine the transmission delay of the target service in the following ways:
  • the network device may send indication information to the first terminal device, where the indication information is used to indicate the transmission delay of the target service.
  • Mode 2 When the transmission mode adopted by the sidelink system is mode2, the RRC layer or the PDCP layer of the first terminal device can determine the transmission delay of the target service and configure it to the MAC layer of the first terminal device; A terminal device stores the transmission delay of multiple services, and after starting the target service, determines the transmission delay of the target service; or the second terminal device sends indication information to the first terminal device, and the indication information is used to indicate the target service.
  • the transmission delay of the service When the transmission mode adopted by the sidelink system is mode2, the RRC layer or the PDCP layer of the first terminal device can determine the transmission delay of the target service and configure it to the MAC layer of the first terminal device; A terminal device stores the transmission delay of multiple services, and after starting the target service, determines the transmission delay of the target service; or the second terminal device sends indication information to the first terminal device, and the indication information is used to indicate the target service. The transmission delay of the service.
  • the present application also provides an example of a communication method.
  • a mobile communication system including a terminal device and a base station is taken as an example.
  • the MAC layer is performed. Taking scheduling as an example, it will be described with reference to the flowchart shown in FIG. 7 .
  • the base station After the base station establishes a wireless connection with the terminal device, the base station allocates the transmission delay of the XR service to the terminal device.
  • the base station may establish an RRC connection with the terminal device according to the description in S600a in the embodiment shown in FIG. 6A , and establish the data bearer of the XR service based on the RRC connection.
  • the MAC layer of the base station and the terminal device establishes a target logical channel corresponding to the data bearer.
  • the base station may determine the transmission delay of the XR service in the manner described in S600b, and send indication information indicating the transmission delay of the XR service to the terminal device.
  • the terminal device can determine the transmission delay of the XR service, so as to transmit the service data of the XR service (hereinafter referred to as XR service data) according to the transmission delay.
  • the number of tokens Bxr in the token bucket corresponding to the target logical channel may also be referred to as the number of tokens Bxr corresponding to the target logical channel.
  • This example only takes the example of initializing the token data Bxr corresponding to the target logical channel to 0, but it should be noted that this example does not limit the initial value of the number of tokens, and the initial value may also be other values.
  • the Vth XR service data may be any XR service data.
  • Each XR service data may be one frame of image, set frame image or multiple frame images; or one frame image, set frame image or one image slice of multiple frame images, which is not limited in this application.
  • the Vth XR service data may be the Vth frame image or the Vth image slice.
  • the amount of data carried by each RLC SDU that carries the Vth XR service data is determined by the terminal equipment itself, which is not described in detail in this application.
  • this example does not limit the format of data packets carrying XR service data.
  • This example only takes RLC SDU as an example.
  • data packets carrying service data may also be in other formats. data pack.
  • the MAC layer of the terminal device can sequentially multiplex multiple RLC SDUs carrying the Vth XR service data into the target transport channel according to the set order, and the target transport channel is the transport channel corresponding to the target logical channel.
  • the MAC layer of the terminal device calculates the PBR of the target logical channel according to the data volume Sv of the remaining data of the Vth XR service data and the remaining transmission time D; and updates the order of the token bucket corresponding to the target logical channel according to the PBR Number of cards Bxr.
  • PBR represents the increase rate of tokens in the token bucket, it can represent the transmission speed of XR service data. Therefore, when the data volume Sv and the remaining transmission time D of the remaining data of the Vth XR service data are known, it is possible to Determine the rate of increase of tokens in the token bucket for the remaining time D.
  • PBR is represented by the amount of data (such as the number of bits) increased per unit time
  • PBR Sv/D
  • the unit time may be a standard time unit such as seconds (second, s) or milliseconds (millisecond, ms).
  • the token increment time interval T is the update period of Bxr, and its value may be the same as the transmission time interval TTI, or may be different from the TTI, which is not limited in this application.
  • the MAC layer of the terminal device when the RRC layer of the base station further configures the token bucket depth BSD (used to indicate the token number threshold of the token bucket) for the target logical channel of the terminal device, the MAC layer of the terminal device is in the In the process of updating Bxr according to PBR, it is necessary to ensure that Bxr is less than or equal to the token quantity threshold indicated by BSD.
  • the token bucket depth BSD used to indicate the token number threshold of the token bucket
  • the MAC layer of the terminal device At each transmission moment, the MAC layer of the terminal device, according to the number of tokens Bxr in the current token bucket, the data amount K of the remaining data in the RLC SDU to be transmitted in the target logical channel, and the idle data in the MAC PDU of the target transmission channel
  • the amount of resources M that is, the amount of data M that can be carried by idle resources in the MAC PDU
  • the target data whose data amount is Z in the remaining data of the Vth XR service data is multiplexed into the MAC PDU, and according to the target data of the target data.
  • the RLC SDUs to be transmitted are: in the process of sequentially transmitting the plurality of RLC SDUs carrying the Vth XR service data by the MAC layer, the RLC SDUs whose data has not been completely transmitted. Certainly, the remaining data in the to-be-transmitted RLC SDU is included in the remaining data of the Vth XR service data.
  • the amount of idle resources in the MAC PDU the total amount of data that can be carried in the MAC PDU - the total amount of data that has been multiplexed into all data in the MAC PDU.
  • the MAC layer of the terminal device can multiplex data with a data amount of M into the MAC PDU at most.
  • the value of the data amount Z of the target data multiplexed this time is also different, which can be divided into for the following cases:
  • the MAC layer multiplexes all the RLC SDUs to be transmitted into the MAC PDU, that is, the target data is all the remaining data in the RLC SDUs to be transmitted.
  • the multiplexing process is the same as the above steps, that is, the updated RLC SDU to be transmitted needs to be
  • the data amount K of the remaining data is continuously compared with the idle resource amount M in the updated MAC PDU, and according to the comparison result, part or all of the data in the updated RLC SDU to be transmitted is multiplexed into the MAC PDU until it meets any of the following Stop condition:
  • the RLC SDUs carrying the Vth XR service data in the target logical channel are RLC SDU0 and RLC SDU1
  • the current RLC SDU to be transmitted is RLC SDU0.
  • the updated Bxr may be less than 0.
  • the Bxr of the target logical channel is less than or equal to 0, if Bxr is still less than 0 at the next TTI transmission time, that is, after adding PBR*TTI tokens, the MAC layer will no longer perform the Vth XR in the target logical channel.
  • the remaining data in the service data is multiplexed until the Bxr of the target logical channel is greater than 0.
  • the RRC layer of the base station also needs to configure the priorities of the multiple logical channels.
  • the priority parameter of any logical channel determines the order in which the target transport channel is multiplexed by the logical channel in multiple logical channels, that is, the RLC SDU in the logical channel with the higher priority will be preferentially multiplexed into the MAC PDU.
  • the MAC layer of the terminal device sequentially multiplexes the data in the three logical channels into the MAC PDU according to the current parameters such as the number of tokens of each logical channel (that is, the MAC layer performs the above S704 for the parameters such as the number of tokens of each logical channel) ), if there are still idle resources in the MAC PDU, the MAC layer of the terminal device can perform an additional multiplexing process, and continue to sequentially multiplex the remaining data in the logical channels into the MAC PDU according to the priorities of the multiple logical channels. .
  • additional multiplexing processes include:
  • the MAC layer of the terminal device sequentially assigns the RLC SDU1-1 in the logical channel 1, the RLC SDU2-1 in the logical channel 2, and the RLC SDU3 in the logical channel 3 according to the parameters such as the token data amount of each logical channel. -1 is multiplexed into the MAC PDU. That is, the MAC layer performs the above S704 for parameters such as the number of tokens of each logical channel, so that the RLC SDU1-1 in the logical channel 1, the RLC SDU2-1 in the logical channel 2, and the RLC SDU3- 1 is multiplexed into the MAC PDU.
  • step 2 there are still idle resources in the MAC PDU, and the idle resources are sufficient, then the MAC layer preferentially multiplexes all the remaining data (ie RLC SDU1-2) in the logical channel 1 into the MAC PDU, as shown in Figure 8 shown.
  • step 2 since there are still idle resources in the MAC PDU (the amount of data that can be carried is X), the MAC layer continues to store the remaining data (RLC SDU2-2 and RLC SDU2-) in logical channel 2 (ie, the target logical channel). 3) The data whose data volume is X is multiplexed into the MAC PDU. For example, when X is greater than the data volume of all data in RLC SDU2-2, and less than the data volume of all data in RLC SDU2-2 and the data volume of all data in RLC SDU2-3, the MAC layer will All the data in the RLC SDU2-2 and part of the data in the RLC SDU2-2 are multiplexed into the MAC PDU.
  • the MAC layer of the terminal device updates the data amount Sv of the remaining data of the Vth XR service data, and the remaining transmission time D.
  • the MAC layer of the terminal device completes a round of multiplexing process for multiple logical channels according to parameters such as the number of tokens of each logical channel, there are still idle resources in the MAC PDU, and the MAC PDU still has idle resources.
  • the layer continues with additional multiplexing processes. And in this additional multiplexing process, the idle resource is not occupied by data with a priority higher than the target logical channel, and the MAC layer continues to use the remaining data of the Vth XR service data in the target logical channel as Z.
  • the MAC layer can continue to update the PBR of the target logical channel according to the updated Sv and D.
  • S706 The MAC layer of the terminal device determines whether the remaining transmission time D of the Vth XR service data is less than or equal to 0, and if so, execute S707; otherwise, according to the Sv and D updated in S705, continue to execute S703, so that the th The remaining data in the V XR service data is multiplexed into the MAC PDU in the target transport channel.
  • This example only takes the determination threshold value of the remaining transmission time D as 0 for illustration, but does not constitute a limitation on the determination threshold value. In practical applications, the determination threshold value may also be other set values.
  • the XR service requires the same transmission delay for each XR service data.
  • the remaining transmission time D of a certain XR service data is less than or equal to 0, it means that the transmission time of the XR service data cannot reach the XR service transmission delay.
  • the transmission delay of the subsequently arrived XR service data may continue to be affected.
  • the MAC layer of the terminal device determines that the remaining transmission time D of the Vth XR service data is less than or equal to 0, then discard the Vth XR in the target logical channel The remaining data of the service data (that is, discarding all RLC SDUs carrying the remaining data in the Vth XR service data in the target logical channel). In this way, the MAC layer no longer multiplexes the RLC SDUs carrying the remaining data of the Vth XR service data, so that the RLC SDUs carrying the next XR service data can be multiplexed to the target transmission channel.
  • S707 is the first possible implementation manner provided by this embodiment of the present application.
  • the MAC layer of the terminal device may choose to continue multiplexing the Vth XR in the target logical channel.
  • the remaining data in the business data.
  • the MAC layer can continue to update Bxr using the PBR calculated last time before. Since the actual transmission duration of the Vth XR service exceeds the transmission delay of the XR service, it may occur that the remaining data of the Vth XR service data has not been transmitted, and at least one RLC SDU carrying the V+1th service data may occur. The condition of reaching the target logical channel.
  • the MAC layer may initialize the remaining transmission time of the V+1th XR service data by adding the Vth The occupied time of XR service data will be deducted accordingly.
  • the MAC layer determines that the remaining transmission time D of the Vth XR service data is less than or equal to 0, it continues to update Bxr using the PBR calculated last time before, and continues to update Bxr at each transmission moment through the implementation method described in S704.
  • the remaining data in the V XR service data is multiplexed into the MAC PDU; in the process of continuing to transmit the remaining data in the V th XR service data, when at least one RLC SDU carrying the V+1 th service data arrives at the target logical channel After that, the MAC layer can time the occupied duration of the Vth XR service data.
  • the MAC layer stops timing the occupied duration, and then the MAC layer transmits the V+1th XR service data through S702-S707.
  • the MAC layer of the terminal device discards the remaining data of the Vth XR service data, that is, discards the RLC SDU that carries the remaining data of the Vth service data in the target logical channel.
  • this step may occur at any time during the process of transmitting the Vth XR service data, or after the transmission of the Vth XR service data ends.
  • the MAC layer of the terminal device transmits the Vth XR service data
  • one or more RLC SDUs carrying V+1 XR service data arrive at the target logical channel
  • the MAC layer determines when When the Vth XR service data times out (that is, the remaining transmission time D ⁇ 0 of the Vth XR service data)
  • the MAC layer can discard the RLC SDU carrying the remaining data of the Vth service data, so as to transmit the V+1th service data as soon as possible XR business data. In this way, the transmission delay of each VR service data in the XR service can be guaranteed.
  • the MAC layer of the terminal device transmits the Vth XR service data
  • one or more RLC SDUs carrying V+1 XR service data arrive at the target logical channel
  • the MAC layer determines the Vth XR service data.
  • the V pieces of XR service data time out that is, the remaining transmission time D ⁇ 0 of the Vth XR service data
  • the MAC layer can continue to update Bxr with the PBR calculated last time before, and use the embodiment method described in S704 to update Bxr in each At the transmission moment, the remaining data in the Vth XR service data is multiplexed into the MAC PDU. In this way, the following two situations can occur:
  • the MAC layer starts to count the occupied duration of the V th XR service data at the moment when the V th XR service data times out, and at the time when the V th XR service data times out.
  • the timing of the occupied time period is stopped.
  • the MAC layer starts to count the occupied duration of the V th XR service data at the arrival time of the V+1 th service data, and at the When the transmission of the V XR service data is completed, the counting of the occupied duration is stopped.
  • the V+1 th XR service data initialized by the MAC layer is less than the transmission delay of the XR service
  • the V+1 th XR service data is also very limited. May time out. If the remaining transmission time D of the V+1 XR service data is less than or equal to 0, and there is still remaining data that has not been transmitted, the MAC layer can continue to occupy the transmission time of the V+2 XR service data. The descriptions in the two implementation manners are shown, and are not repeated here.
  • the present application also provides another example of a communication method.
  • the mobile communication system is continued as an example, and the MAC layer scheduling is performed in the process of implementing the XR service by the terminal device.
  • the example includes the following steps:
  • logical channel 1 is assigned the highest priority by the RRC layer of the base station
  • logical channel 3 is assigned by the RRC layer of the base station.
  • the layer configures the lowest priority, where XR traffic is transmitted on logical channel 2.
  • the PBR of logical channel 1 or logical channel 2 can be assigned a static PBR to the RRC layer of the base station, that is, the MAC layer uses the traditional method to multiplex the RLC SDUs in logical channel 1 and logical channel 2.
  • the logical channel 2 is used as the target logical channel, its PBR adopts the method described in FIG. 6A or FIG. 7 , and uses the dynamic PBR to update the token.
  • the base station After the base station and the terminal device establish a wireless connection, the base station allocates the service delay of the XR service to the terminal device.
  • the data amount of the remaining data Sv the total data amount of the V-th frame image (ie, the total data amount of the V-th frame image data) 1Mbits.
  • the MAC layer of the terminal device can determine the PBR of the XR logical channel according to Sv and D.
  • the PBR is a dynamic PBR, and in this example, the PBR is represented by the amount of data increased per unit time.
  • the MAC layer of the terminal device adopts the implementation described in S704 in the embodiment shown in FIG. 7 to multiplex the Vth frame image data in the logical channel 2 into the MAC PDU.
  • the free resource M of the MAC PDU is greater than Bxr and greater than the RLC SDU0, so the RLC SDU0 does not need to be segmented.
  • the layer multiplexes the entire data of SDU2 in logical channel 2 and the first 12kbits of data of SDU3 into the MAC PDU. After that, because the MAC PDU has no idle resources, the MAC layer stops multiplexing all logical channels. SDU3 in logical channel 2 still has 38kbits to transmit.
  • Bxr' can also be calculated by rounding down.
  • the MAC PDU After the multiplexing of logical channel 1 is completed, the MAC PDU still has idle resources, so the MAC layer can perform multiplexing of logical channel 2. If the MAC layer of the terminal device adopts the implementation described in S704 in the embodiment shown in FIG. 7 , the Vth frame image data in logical channel 2 is multiplexed into the MAC PDU. In this call, the free resource M of the MAC PDU is larger than Bxr and larger than the remaining data amount of the RLC SDU3, which is 38kbits.
  • the MAC PDU has no available resources, and the MAC layer no longer multiplexes the data of logical channel 3 into the MACP PDU.
  • the MAC layer of the terminal device can continue to multiplex the data in the logical channel into the MAC PDU of the transport channel by repeating step A3 or A4.
  • the MAC layer of the terminal device can discard the remaining data of the V-th frame image whose data volume is Sv, so that when the RLC SDU carrying the V+1-th frame image data reaches the XR logical channel, the MAC layer The layer can schedule the RLC SDU carrying the V+1th frame image data as soon as possible.
  • the MAC layer of the terminal device can choose to continue to multiplex the remaining data in the image data of the Vth frame, that is, continue to repeat steps A3 or A4; wherein in A3 and A4, the MAC layer does not update the PBR corresponding to the logical channel. And update Bxr with the last calculated PBR before.
  • A7 In the first embodiment, when the RLC SDU carrying the V+1th frame of image data arrives at the XR logical channel, if the Vth frame of image data has not been transmitted, the MAC layer of the terminal device can start the Vth frame of image data. When the remaining transmission time D of the data is less than or equal to 0, the remaining data of the Vth frame of image data is discarded, that is, the first embodiment in A6; and the MAC layer continues to repeat the above for the RLC SDU carrying the Vth+1st frame of image data. Steps A2-A6, in order to try to multiplex all the image data of the V+1th frame into the MAC PDU within the specified transmission delay of the XR service.
  • the MAC layer of the terminal device when the RLC SDU carrying the V+1 frame of image data arrives at the XR logical channel, if the V-th frame of image data has not been transmitted, the MAC layer of the terminal device can continue to repeat steps A3 or A4 to The remaining data in the image data of the Vth frame is multiplexed. If after a certain scheduling, the MAC layer of the terminal device determines that the image data of the Vth frame has timed out, there is still remaining data in the image data of the Vth frame that has not been transmitted, and the MAC layer of the terminal device can choose to continue to process the remaining data in the image data of the Vth frame.
  • the MAC layer can update Bxr using the PBR calculated last time before. If the V+1 th frame of image data arrives before the V th frame of image data times out, the MAC layer starts to count the occupied duration of the V th frame of image data at the moment when the V th frame of image data times out. If the V+1th frame of image data arrives after the Vth frame of image data times out, the MAC layer starts timing the occupied duration of the Vth frame of image data at the time when the V+1th frame of image data arrives.
  • the MAC layer stops the arrival duration of the V+1th frame of image data to count, and performs the above steps A2-A6 for the RLC SDU carrying the V+1st frame of image data.
  • this example takes the XR service as an example for description, however, this example does not constitute a limitation on the service to which the method provided by the present application is applied.
  • the MAC layer of the terminal device may perform the above communication method on some or all of the multiple logical channels.
  • the MAC layer of the terminal device may perform the above communication method on some or all of these logical channels, which is not limited in this application.
  • the communication method provided by the embodiment of the present application is applicable to the initial transmission of service data, and the retransmission of some service data may not be applicable due to different retransmission mechanisms of service data.
  • a logical channel may be associated with a transmission moment, and at this transmission moment, other logical channels may not allow multiplexing of the transmission channel corresponding to the logical channel.
  • the MAC layer of the communication device can only associate the first logical channel
  • the service data in the logical channel is multiplexed to the transport channel, and the service data in other logical channels is not multiplexed to the transport channel.
  • an embodiment of the present application also provides a communication device, which can be applied to the communication system as shown in FIG. 4 .
  • the communication device may be a terminal device or a network device in a mobile communication system, or may be a terminal device in a sidelink communication system, which is not limited in this application.
  • the communication device can implement the methods provided by the above embodiments or examples.
  • the communication device 900 includes: a transceiver 901 , a processor 902 , and a memory 903 .
  • the transceiver 901 , the processor 902 and the memory 903 are connected to each other.
  • the transceiver 901 , the processor 902 and the memory 903 are connected to each other through a bus 904 .
  • the bus 904 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus or the like.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used in FIG. 9, but it does not mean that there is only one bus or one type of bus.
  • the transceiver 901 is used for receiving and sending signals to realize communication with other devices.
  • the transceiver 901 can be connected to an antenna for signal transmission.
  • the processor 902 is configured to implement the communication methods provided by the above embodiments or examples. For specific functions, reference may be made to the descriptions in the above embodiments, which will not be repeated here.
  • the processor 902 may be a central processing unit (central processing unit, CPU), a network processor (network processor, NP), or a combination of CPU and NP, and so on.
  • the processor 902 may further include hardware chips.
  • the above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • the above-mentioned PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general-purpose array logic (generic array logic, GAL) or any combination thereof.
  • CPLD complex programmable logic device
  • FPGA field-programmable gate array
  • GAL general-purpose array logic
  • the memory 903 is used to store program instructions and the like.
  • the program instructions may include program code, and the program code includes computer operation instructions.
  • the memory 903 may include random access memory (RAM), and may also include non-volatile memory (non-volatile memory), such as at least one disk storage.
  • the processor 902 executes the program instructions stored in the memory 903 to implement the above functions, thereby implementing the methods provided by the above embodiments.
  • the embodiments of the present application further provide a computer program, when the computer program runs on a computer, the computer can execute the methods provided by the above embodiments.
  • the embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a computer, the computer executes the method provided by the above embodiment. .
  • the storage medium may be any available medium that the computer can access.
  • computer readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or be capable of carrying or storing instructions or data structures in the form of desired program code and any other medium that can be accessed by a computer.
  • an embodiment of the present application further provides a chip, where the chip is used to read a computer program stored in a memory to implement the methods provided by the above embodiments.
  • the embodiments of the present application provide a chip system, where the chip system includes a processor for supporting a computer apparatus to implement the functions involved in the communication device in the above embodiments.
  • the chip system further includes a memory for storing necessary programs and data of the computer device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the embodiments of the present application provide a communication method and device.
  • the communication device can dynamically determine the PBR corresponding to the target service according to the remaining data volume and remaining transmission time of the service data of the target service, so as to transmit the service data according to the PBR; wherein, the remaining transmission time is based on the target service.
  • 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.

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Abstract

Les modes de réalisation de la présente demande concernent un procédé et un dispositif de communication. Dans le procédé, un dispositif terminal peut déterminer de manière dynamique, selon le volume de données restant et le temps de transmission restant de données de service d'un service cible, un débit binaire priorisé (PBR) correspondant au service cible, de manière à transmettre les données de service selon le PBR, le temps de transmission restant étant la différence entre une durée de transmission cible déterminée selon un retard de transmission du service cible et une durée pour transmettre les données de service. Étant donné que le PBR du service cible change de manière dynamique selon l'exigence d'un débit de transmission des données de service, au moyen du procédé, la probabilité de transmettre toutes les données de service à l'intérieur d'un retard de transmission spécifié du service cible peut être améliorée autant que possible. En conclusion, au moyen du procédé, le retard de transmission de données de service d'un dispositif terminal peut être assuré, et l'expérience de l'utilisateur d'un service peut être améliorée.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110170495A1 (en) * 2010-01-08 2011-07-14 Mark Earnshaw Method and apparatus for logical channel prioritization for uplink carrier aggregation
CN110167066A (zh) * 2018-02-14 2019-08-23 华为技术有限公司 一种数据传输方法及装置
CN110324902A (zh) * 2018-03-30 2019-10-11 华为技术有限公司 通信方法、通信装置和系统
CN110636554A (zh) * 2019-09-17 2019-12-31 华为技术有限公司 数据传输方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110170495A1 (en) * 2010-01-08 2011-07-14 Mark Earnshaw Method and apparatus for logical channel prioritization for uplink carrier aggregation
CN110167066A (zh) * 2018-02-14 2019-08-23 华为技术有限公司 一种数据传输方法及装置
CN110324902A (zh) * 2018-03-30 2019-10-11 华为技术有限公司 通信方法、通信装置和系统
CN110636554A (zh) * 2019-09-17 2019-12-31 华为技术有限公司 数据传输方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI, HISILICON: "LCP with grant-free transmission", 3GPP DRAFT; R2-1710370 LCP WITH GRANT-FREE TRANSMISSION, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Prague, Czech Republic; 20171009 - 20171013, 29 September 2017 (2017-09-29), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051354899 *

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