CN116156560A

CN116156560A - Wireless communication method and device

Info

Publication number: CN116156560A
Application number: CN202310152964.7A
Authority: CN
Inventors: 吕玲; 赵铮; 杨中志
Original assignee: Quectel Wireless Solutions Co Ltd
Current assignee: Quectel Wireless Solutions Co Ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-05-23

Abstract

The application provides a wireless communication method and device. The method comprises the following steps: the receiving device determines a first transmission policy for determining whether a first protocol layer delivers data packets in a first set of PDUs to an upper layer, the first transmission policy being related to a type of the first set of PDUs.

Description

Wireless communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a wireless communication method and apparatus.

Background

With the development of technology, large data services, such as extended reality (XR) services, are emerging. At present, the protocol is provided that sets of protocol data units (protocol data unit, PDU) corresponding to such services can be divided into multiple types, and how to transmit data according to different types of PDU sets is not explicitly provided.

Disclosure of Invention

The application provides a wireless communication method and device. Several aspects of the present application are described below.

In a first aspect, a wireless communication method is provided, including: the receiving device determines a first transmission policy for determining whether a first protocol layer delivers data packets in a first set of PDUs to an upper layer, the first transmission policy being related to a type of the first set of PDUs.

As one possible implementation, the first transmission policy includes one or more of the following: the first protocol layer submits the successfully received data packet to an upper layer; the first protocol layer does not submit the successfully received data packet to the upper layer; determining whether the first protocol layer submits the successfully received data packet to an upper layer according to a first condition; after submitting part of the data packets in the first PDU set to an upper layer through the first protocol layer, indicating whether to delete other data packets in the first PDU set to a lower layer; and after submitting part of the data packets in the first PDU set to an upper layer through the first protocol layer, whether other data packets in the first PDU set are submitted to the upper layer or not.

As a possible implementation, the first condition relates to a first data packet, where the first data packet includes a data packet that has been successfully received and/or a data packet that has not been successfully received in the first PDU set.

As one possible implementation, the first condition relates to one or more of the following information: the number of the first data packets; the number of bits of the first data packet; the number of the first data packets is a proportion of the total number of the data packets in the first PDU set; the bit number of the first data packet is the proportion of the total bit number of the data packets in the first PDU set; the first data packet is located in the first PDU set.

As a possible implementation manner, the location of the first data packet in the first PDU set includes a location continuity of the first data packet in the first PDU set.

As one possible implementation, the first condition includes one or more of the following: the number of data packets in the first PDU set that have been successfully received is greater than or equal to a first threshold; the number of unsuccessfully received data packets in the first PDU set is less than or equal to a second threshold; the bit number of the data packet which is successfully received in the first PDU set is greater than or equal to a third threshold value; the bit number of the data packet which is not successfully received in the first PDU set is smaller than or equal to a fourth threshold value; the number of the data packets which are successfully received in the first PDU set is larger than or equal to a fifth threshold value, wherein the proportion of the number of the data packets in the first PDU set is equal to the total number of the data packets in the first PDU set; the number of the unsuccessfully received data packets in the first PDU set is smaller than or equal to a sixth threshold value, wherein the proportion of the number of the unsuccessfully received data packets in the first PDU set is equal to the total number of the data packets in the first PDU set; the data packet bits which are successfully received in the first PDU set occupy the proportion of the total data packet bits in the first PDU set and are larger than or equal to a seventh threshold value; the unsuccessfully received data packet bits in the first PDU set account for the proportion of the total data packet bits in the first PDU set, and are smaller than or equal to an eighth threshold; the number of consecutive data packets in the first set of PDUs that have been successfully received is greater than or equal to a ninth threshold; the number of the data packets which are not successfully received in the first PDU set and are continuous in position is smaller than or equal to a tenth threshold value; the number of bits of the continuous data packets of the position which are successfully received in the first PDU set is greater than or equal to an eleventh threshold; the number of bits of the data packets which are not successfully received and are continuous in position in the first PDU set is smaller than or equal to a twelfth threshold value; the positions of the data packets which are successfully received in the first PDU set are continuous; the unsuccessfully received data packets in the first PDU set are contiguous in location.

As a possible implementation manner, the method further includes: the receiving equipment submits the successfully received data packet to an upper layer through the first protocol layer under the condition that the first condition is met; and/or under the condition that the first condition is not met, the receiving device does not submit the successfully received data packet to an upper layer through the first protocol layer and/or delete the successfully received data packet.

As a possible implementation, the first transmission policy is different if the type of the first PDU set is different.

In a second aspect, there is provided a wireless communication method comprising: the transmitting device determines a second transmission policy, where the second transmission policy is used to determine a transmission manner in which data packets in a second PDU set are transmitted to the receiving device, and the second transmission policy is related to a type of the second PDU set.

As one possible implementation, the second transmission policy is related to one or more of the following information: transmission resources of the data packet; a delay budget range for the data packet; the second PDU integrates the conditions of the power transmission.

As a possible implementation, the second transmission policy is related to a TB used for transmitting data packets and/or a BLER of the transmission resources.

As one possible implementation, if the type of the second PDU set is the first type, the second transmission policy is related to one or more of the following: a TB for transmitting data packets; -BLER of the transmission resource; delay budget range for packets.

As one possible implementation, if the type of the second PDU set is the first type, the second transmission policy includes one or more of the following: a plurality of data packets belonging to the same PDU set are transmitted through the same TB; a plurality of data packets belonging to the same PDU set are transmitted through transmission resources with the same BLER; if the transmitting device expects that the transmission of the remaining data packets in the second PDU set cannot be completed within the range of the delay budget, discarding the transmission of the remaining one or more data packets; and if the partial data packet in the second PDU set is successfully transmitted and the partial data packet is not successfully transmitted, transmitting the data packet which is not successfully transmitted by using the transmission resource of the first BLER, wherein the first BLER is smaller than or equal to the BLER of the transmission resource used for transmitting the data packet last time.

As one possible implementation, if the type of the second PDU set is a second type, the second transmission policy is related to one or more of the following: a delay budget range for the data packet; the second PDU integrates the conditions of the power transmission.

As a possible implementation manner, if the type of the second PDU set is a second type, the second transmission policy includes: if the transmitting device expects that the transmission of the remaining data packets in the second PDU set cannot be completed within the range of the delay budget, continuing to transmit the remaining data packets; or if the transmitting device expects that the transmission of the remaining data packets in the second PDU set cannot be completed within the range of the delay budget, determining whether to discard the transmission of the remaining data packet or data packets according to the condition of the integrated power transmission of the first PDU.

In a third aspect, a wireless communication method is provided, including: the terminal equipment receives first indication information, wherein the first indication information is used for indicating the type of the PDU set; the first indication information is sent to the terminal equipment by an application server; and/or the first indication information is sent to an access layer of the terminal equipment by an application layer of the terminal equipment; and/or the first indication information is sent to the terminal equipment by the network equipment.

As a possible implementation manner, the first indication information is used for indicating a type of a PDU set corresponding to the DRB, where the type of the PDU set corresponding to the DRB is determined based on the type of the PDU set corresponding to the data stream and a corresponding relationship between the data stream and the DRB.

As a possible implementation manner, the first indication information is used to indicate a type of a PDU set corresponding to the first protocol entity, where the type of the PDU set corresponding to the first protocol entity is determined based on the type of the PDU set corresponding to the data stream and a correspondence between the data stream and the first protocol entity.

As a possible implementation manner, the type of the PDU set corresponding to the data stream is determined by an application layer of the terminal device and/or the application server.

As a possible implementation manner, if the type of the PDU set corresponding to the data stream is determined by the application layer of the terminal device, the method further includes: the terminal device sends second indication information to the network device, wherein the second indication information is used for indicating one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

As a possible implementation manner, if the type of the PDU set corresponding to the data stream is determined by the application server, the method further includes: the terminal equipment receives the first indication information sent by the network equipment, wherein the first indication information is used for indicating one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity are indicated to the network equipment by the application server.

As a possible implementation manner, the type of the PDU set corresponding to the DRB and/or the type of the PDU set corresponding to the first protocol entity is determined by one or more of the following: network equipment, an application layer of terminal equipment and an access layer of terminal equipment.

As a possible implementation manner, if all PDU sets corresponding to a first DRB belong to a first type, the first indication information is used to indicate that the type of the PDU set corresponding to the first DRB is the first type; or if all the PDU sets corresponding to the first DRB belong to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first DRB is the second type; or if the partial PDU set corresponding to the first DRB belongs to the first type and the partial PDU set belongs to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first DRB comprises the first type and the second type.

As a possible implementation manner, if all PDU sets corresponding to a first protocol entity belong to a first type, the first indication information is used to indicate that the type of the PDU set corresponding to the first protocol entity is the first type; or if all the PDU sets corresponding to the first protocol entity belong to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first protocol entity is the second type; or if the partial PDU set corresponding to the first protocol entity belongs to the first type and the partial PDU set belongs to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first protocol entity comprises the first type and the second type.

As a possible implementation manner, the first indication information is carried in a user plane message.

As one possible implementation manner, the first indication information is carried in one or more of the following: control PDU, data PDU.

As a possible implementation manner, the first indication information is carried in a packet header of the data PDU.

As a possible implementation manner, the type of each PDU set in the plurality of PDU sets is indicated by the first indication information, or the type of the PDU set with the changed type in the plurality of PDU sets is indicated by the first indication information.

As a possible implementation manner, the PDU set includes an uplink PDU set and a downlink PDU set, the type of the uplink PDU set is determined by an application layer of the terminal device, and/or the type of the downlink PDU set is determined by the application server.

In a fourth aspect, there is provided a wireless communication method comprising: the network equipment receives third indication information, wherein the third indication information is used for indicating the type of the PDU set; wherein the third indication information is sent to the network device by an application server; and/or the third indication information is sent to the network device by the terminal device.

As a possible implementation manner, the third indication information is used to indicate a type of a PDU set corresponding to the DRB, where the type of the PDU set corresponding to the DRB is determined based on the type of the PDU set corresponding to the data stream and a correspondence between the data stream and the DRB.

As a possible implementation manner, the third indication information is used to indicate a type of a PDU set corresponding to the first protocol entity, where the type of the PDU set corresponding to the first protocol entity is determined based on the type of the PDU set corresponding to the data stream and a correspondence between the data stream and the first protocol entity.

As a possible implementation manner, if the type of the PDU set corresponding to the data stream is determined by the application layer of the terminal device, the method further includes: the network device receives the third indication information sent by the terminal device, where the third indication information is used to indicate one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

As a possible implementation manner, if the type of the PDU set corresponding to the data stream is determined by the application server, the method further includes: and the network equipment receives the third indication information sent by the application server, wherein the third indication information is used for indicating the type of the PDU set corresponding to the data flow.

As a possible implementation manner, if all PDU sets corresponding to a first DRB belong to a first type, the third indication information is used to indicate that the type of the PDU set corresponding to the first DRB is the first type; or if all the PDU sets corresponding to the first DRB belong to the second type, the third indication information is used for indicating that the type of the PDU set corresponding to the first DRB is the second type; or if the type of the PDU set corresponding to the first DRB comprises a first type and a second type, the third indication information is used for indicating that the type of the PDU set corresponding to the first DRB comprises the first type and the second type.

As a possible implementation manner, the third indication information is carried in a user plane message.

As one possible implementation manner, the third indication information is carried in one or more of the following: control PDU, data PDU within PDU set.

As a possible implementation manner, the third indication information is carried in a packet header of the data PDU.

As a possible implementation manner, the type of each PDU set in the plurality of PDU sets is indicated by the third indication information, or the type of the PDU set with the changed type in the plurality of PDU sets is indicated by the third indication information.

In a fifth aspect, there is provided a receiving apparatus comprising: a determining unit, configured to determine a first transmission policy, where the first transmission policy is used to determine whether a first protocol layer submits a data packet in a first PDU set to an upper layer, and the first transmission policy is related to a type of the first PDU set.

As a possible implementation manner, the receiving device further includes a processing unit, configured to: under the condition that the first condition is met, successfully received data packets are submitted to an upper layer through the first protocol layer; and/or under the condition that the first condition is not met, not submitting the successfully received data packet to an upper layer through the first protocol layer and/or deleting the successfully received data packet.

In a sixth aspect, there is provided a transmitting apparatus including: and the determining unit is used for determining a second transmission strategy, the second transmission strategy is used for determining a transmission mode of transmitting the data packets in the second PDU set to the receiving equipment, and the second transmission strategy is related to the type of the second PDU set.

A seventh aspect provides a terminal device, including: a receiving unit, configured to receive first indication information, where the first indication information is used to indicate a type of a PDU set; the first indication information is sent to the terminal equipment by an application server; and/or the first indication information is sent to an access layer of the terminal equipment by an application layer of the terminal equipment; and/or the first indication information is sent to the terminal equipment by the network equipment.

As a possible implementation manner, if the type of the PDU set corresponding to the data stream is determined by the application layer of the terminal device, the terminal device further includes: a sending unit, configured to send second indication information to the network device, where the second indication information is used to indicate one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

As a possible implementation manner, if the type of the PDU set corresponding to the data stream is determined by the application server, the receiving unit is configured to: receiving the first indication information sent by the network equipment, wherein the first indication information is used for indicating one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity are indicated to the network equipment by the application server.

An eighth aspect provides a network device, comprising: a receiving unit, configured to receive third indication information, where the third indication information is used to indicate a type of a PDU set; wherein the third indication information is sent to the network device by an application server; and/or the third indication information is sent to the network device by the terminal device.

As a possible implementation, if the type of the PDU set corresponding to the data stream is determined by the application layer of the terminal device, the receiving unit is further configured to: receiving the third indication information sent by the terminal equipment, wherein the third indication information is used for indicating one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

As a possible implementation, if the type of the PDU set corresponding to the data stream is determined by the application server, the receiving unit is further configured to: and receiving the third indication information sent by the application server, wherein the third indication information is used for indicating the type of the PDU set corresponding to the data stream.

In a ninth aspect, there is provided a receiving device comprising a processor, a memory for storing one or more computer programs, the processor for invoking the computer programs in the memory to cause the receiving device to perform part or all of the steps of the first aspect or any one of the possible implementations of the first aspect.

In a tenth aspect, there is provided a transmitting device comprising a processor, a memory for storing one or more computer programs, the processor for invoking the computer programs in the memory to cause the transmitting device to perform part or all of the steps of the second aspect or any one of the possible implementations of the second aspect.

In an eleventh aspect, there is provided a terminal device comprising a processor, a memory for storing one or more computer programs, the processor for invoking the computer programs in the memory to cause the terminal device to perform part or all of the steps of the first aspect or any one of the possible implementations of the first aspect.

In a twelfth aspect, there is provided a network device comprising a processor, a memory for storing one or more computer programs, the processor for invoking the computer programs in the memory to cause the network device to perform part or all of the steps of the second aspect or any one of the possible implementations of the second aspect.

In a thirteenth aspect, a communication system is provided, which system comprises the terminal device and/or the network device as described above, or which communication system may comprise the receiving device and/or the transmitting device as described above. In another possible design, the system may further include other devices that interact with the terminal device or the network device in the solution provided in the embodiment of the present application, or the system may further include other devices that interact with the transmitting device or the receiving device in the solution provided in the embodiment of the present application.

In a fourteenth aspect, there is provided a computer-readable storage medium storing a computer program that causes a terminal to execute some or all of the steps of the method of any one of the first to fourth aspects.

In a fifteenth aspect, there is provided a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program operable to cause a terminal to perform part or all of the steps of the method of any one of the first to fourth aspects above. In some implementations, the computer program product can be a software installation package.

In a sixteenth aspect, there is provided a chip comprising a memory and a processor from which the processor may call and run a computer program to implement part or all of the steps of the method of any one of the first to fourth aspects above.

The method and the device enable the receiving device and/or the sending device to define the data processing strategy by setting the transmission strategy related to the type of the PDU set. If the receiving device can reasonably determine whether to submit the data packet to the upper layer through the first protocol layer, unnecessary data transmission can be avoided, and the cost is reduced. If the transmitting device can reasonably determine the transmission strategy for transmitting the data packet to the receiving device, the probability of successful data transmission can be improved.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system applicable to an embodiment of the present application.

Fig. 2 is a schematic diagram of an image for encoding and decoding.

Fig. 3 is a schematic diagram of dividing the types of PDU sets.

Fig. 4 is a schematic flow chart of a wireless communication method provided in an embodiment of the present application.

Fig. 5 is a schematic flow chart of another wireless communication method provided in an embodiment of the present application.

Fig. 6 is a schematic flow chart of another wireless communication method provided in an embodiment of the present application.

Fig. 7 is a schematic flow chart of another wireless communication method provided in an embodiment of the present application.

Fig. 8 is a schematic flow chart of determining a PDU set type by an application server, provided by an embodiment of the present application.

Fig. 9 is a schematic flow chart of determining a PDU set type by a UE side according to an embodiment of the present application.

Fig. 10 is a schematic flow chart of determining a downlink PDU set type by an application server and determining an uplink PDU set type by a UE side according to an embodiment of the present application.

Fig. 11 is a schematic flow chart of indicating a PDU set type by a user plane message provided in an embodiment of the present application.

Fig. 12 is a schematic block diagram of a receiving device provided in an embodiment of the present application.

Fig. 13 is a schematic block diagram of a transmitting apparatus provided in an embodiment of the present application.

Fig. 14 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

Fig. 15 is a schematic block diagram of a network device provided in an embodiment of the present application.

Fig. 16 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

Fig. 1 is a wireless communication system 100 to which embodiments of the present application may be applied. The wireless communication system 100 may include a base station 110 and a terminal device 120. Base station 110 may be a device that communicates with terminal device 120. Base station 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices 120 located within the coverage area.

Fig. 1 illustrates one base station and two terminals by way of example, and the wireless communication system 100 may alternatively include multiple base stations and may include other numbers of terminal devices within the coverage area of each base station, as embodiments of the present application are not limited in this regard.

Optionally, the wireless communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the technical solution of the embodiments of the present application may be applied to various communication systems, for example: fifth generation (5th generation,5G) systems or New Radio (NR), long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD), and the like. The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system, a satellite communication system and the like.

The Terminal device in the embodiments of the present application may also be referred to as a User Equipment (UE), an access Terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a Mobile Terminal (MT), a remote station, a remote Terminal, a mobile device, a user Terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the application can be a device for providing voice and/or data connectivity for a user, and can be used for connecting people, things and machines, such as a handheld device with a wireless connection function, a vehicle-mounted device and the like. The terminal device in the embodiments of the present application may be a mobile phone (mobile phone), a tablet (Pad), a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), or the like. Alternatively, the UE may be used to act as a base station. For example, the UEs may act as scheduling entities that provide side-uplink signals between UEs in V2X or D2D, etc. For example, a cellular telephone and a car communicate with each other using side-link signals. Communication between the cellular telephone and the smart home device is accomplished without relaying communication signals through the base station.

The base station in the embodiments of the present application may be a device for communicating with a terminal device, which may also be referred to as an access network device or a radio access network device. A base station in an embodiment of the present application may refer to a radio access network (radio access network, RAN) node (or device) that accesses a terminal device to a wireless network. The base station may broadly cover or replace various names in the following, such as: a node B (NodeB), an evolved NodeB (eNB), a next generation NodeB (gNB), a relay station, an access point, a transmission point (transmitting and receiving point, TRP), a transmission point (transmitting point, TP), a master MeNB, a secondary SeNB, a multi-mode wireless (MSR) node, a home base station, a network controller, an access node, a wireless node, an Access Point (AP), a transmission node, a transceiving node, a baseband unit (BBU), a remote radio unit (Remote Radio Unit, RRU), an active antenna unit (active antenna unit, AAU), a radio head (remote radio head, RRH), a Central Unit (CU), a Distributed Unit (DU), a positioning node, and the like. The base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, modem, or chip for placement within the aforementioned device or apparatus. The base station may also be a mobile switching center, a device-to-device (D2D), a vehicle-to-device (V2X), a device that assumes a base station function in machine-to-machine (M2M) communication, a network-side device in a 6G network, a device that assumes a base station function in a future communication system, or the like. The base stations may support networks of the same or different access technologies. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the base station.

The base station may be fixed or mobile. For example, a helicopter or drone may be configured to act as a mobile base station, and one or more cells may move according to the location of the mobile base station. In other examples, a helicopter or drone may be configured to function as a device to communicate with another base station.

In some deployments, a base station in embodiments of the present application may refer to CU or DU, or a base station includes CU and DU. The gNB may also include an AAU.

The base station and terminal equipment may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. In the embodiment of the application, the scene where the base station and the terminal equipment are located is not limited.

With the continuous development of wireless cellular communication technology, especially the development of 5G technology, the spectrum efficiency is higher and higher, the available frequency band is wider and the transmittable data rate is larger and larger, so that supporting large data service (such as XR service) by using cellular communication technology is becoming feasible. The evolution of XR and 5G networks has mutually promoted, cycling forward. Typically, an XR service of a user requires a transmission rate of 30-200Mbps, and at least 10 terminals are required to be supported in a cell for XR service at the same time, and only a 5G network can provide such a large transmission capacity. In addition, compared with the previous wireless network, the 5G cellular network can provide a greatly increased transmission capacity, the existing mainstream service can not fill the network capacity, so that the network transmission capacity is empty, and a new service is needed objectively to fully utilize the 5G network, thereby promoting the 5G network to quickly make a great deal.

Taking XR service as an example, the main data of the XR service is video service data, and video is transmitted through a wireless cellular network after source coding. Generally, when encoding video, an encoder (e.g., a source encoder or an image encoder) may first identify the contour of the video and encode similar partial pictures into a set of data. The dependency relationship between the data in the groups is strong, and the dependency relationship between the groups is weak.

Taking fig. 2 as an example, the encoder may encode the blue sky portion into a set of data packets, the beach portion into a set of data packets, and the sea portion into a set of data packets. On the basis, the parts such as seagull, dolomite and the like are subjected to fine coding.

The data packet generated by the encoder has the characteristics of a set of PDUs. Taking fig. 3 as an example, among the data packets corresponding to the same service, the

data packets

1, 2 and 3 belong to the PDU set a, and the

data packets

4, 5 and 6 belong to the PDU set B.

Taking XR service as an example, the PDU sets specified in the current protocol can be divided into two classes, called class a and class B. For the type a PDU set, if a certain part of data in the PDU set is not successfully received, for the receiving side (or the receiving end or the receiving device), only a part of data packet in one PDU set is received, and the receiving side has no use for the receiving side, and the receiving side may not be able to decode the corresponding image by using the part of data packet. Thus, for a class a PDU set, the receiver typically needs to receive all packets in the class a PDU set before decoding the corresponding picture. For the class B packet, if a part of the packet in the PDU set cannot be successfully received, the receiver can decode the corresponding image, that is, even if the receiver receives only a part of the packet in the PDU set, the receiver can still decode the corresponding image, but the image quality is slightly lower.

In addition, encoder and decoder complaints are "best to deliver in order" for whether the packets are delivered in order, but not at the expense of latency requirements. Sequential delivery may include delivery in the order of packets and/or the order of packets of class a followed by packets of class B, etc.

Taking fig. 3 as an example, if the receiver successfully receives the

data packets

1, 2, 4, 5, and 6, the data packet 3 cannot be received correctly, and the receiver decoder requests to receive all the data packets in the PDU set a. In this case, the receiver should try to deliver (or transmit) the data packet of the PDU set a to the upper layer first, then deliver the data packet of the PDU set B to the upper layer, and deliver the PDU set B to the upper layer only when the number 3 data packet is not reached.

Submitting a packet to an upper layer may refer to a first protocol layer of the recipient submitting the packet to an upper layer. The protocol stack may be divided into different protocol layers according to different divisions. The following is an example.

As one example, the protocol stack may include an L1 layer, an L2 layer, and an L3 layer. At which L1 layer may be understood as the physical layer, L2 may be understood as the data link layer, and L3 layer may be understood as the network layer. The L2 layer may include one or more of a medium access control (medium access control, MAC) sublayer, a radio link control (radio link control, RLC) sublayer, a broadcast/multicast control (multicast control, BMC) sublayer, and a packet data convergence protocol (packet data convergence protocol, PDCP) sublayer. The L3 layer may include one or more of a radio resource control (radio resource control, RRC) sublayer, a mobility management (mobility management, MM) sublayer of a non-access layer, and a Call Control (CC) sublayer. In this case, the first protocol layer may include an L1 layer and/or an L2 layer. If the first protocol layer includes an L1 layer, submitting the data packet to the upper layer may include submitting the data packet by the L1 layer to the L2 layer. If the first protocol layer includes an L2 layer, submitting the data packet to the upper layer may include submitting the data packet by the L2 layer to the L3 layer.

As another example, the protocol stack may be a seven-layer protocol stack, such as the protocol stack may include a physical layer, a data link layer, a network layer, a transport layer, a session layer, a presentation layer, and an application layer. The first protocol layer may include one or more of the following: a physical layer, a data link layer, a network layer, a transport layer, a session layer, and a presentation layer. If the first protocol layer includes a physical layer, submitting the data packet to the upper layer may include the physical layer submitting the data packet to the data link layer; if the first protocol layer includes a data link layer, submitting the data packet to an upper layer may include submitting the data packet to a network layer by the data link layer; if the first protocol layer includes a network layer, submitting the data packet to an upper layer may include the network layer submitting the data packet to a transport layer; if the first protocol layer includes a transport layer, submitting the data packet to the upper layer may include the transport layer submitting the data packet to the session layer; if the first protocol layer includes a session layer, submitting the data packet to the upper layer may include submitting the data packet to the presentation layer by the session layer; if the first protocol layer includes a presentation layer, passing the data packet to the upper layer may include the presentation layer passing the data packet to the application layer.

As another example, the protocol stack may be a four-layer protocol stack, such as the protocol stack may include a link layer, a network layer, a transport layer, and an application layer. The first protocol stack may include one or more of the following: a link layer, a network layer, and a transport layer. If the first protocol stack includes a link layer, communicating the data packet to the upper layer may include the link layer communicating the data packet to the network layer; if the first protocol stack includes a network layer, communicating the data packet to the upper layer may include the network layer communicating the data packet to a transport layer; if the first protocol stack includes a transport layer, communicating the data packet to the upper layer may include the transport layer communicating the data packet to the application layer.

The sender may be a terminal device and/or a network device and the receiver may be a terminal device and/or a network device. For example, for downlink, the sender is a network device, and the receiver is a terminal device; for uplink, the sender is a terminal device, and the receiver is a network device.

At present, only the PDU sets can be divided into two types in the protocol, and specifically how to provide the terminal device and/or the network device with only the types of the PDU sets has not been specified explicitly.

In addition, in the case of PDU sets of different types, there is no explicit fixing how the receiver and/or sender performs data transmission.

In view of one or more of the above problems, embodiments of the present application provide a wireless communication method and apparatus. The following describes a wireless communication method provided in an embodiment of the present application with reference to fig. 4.

Referring to fig. 4, in step S410, the receiving device determines a first transmission policy for determining whether the first protocol layer delivers the data packet in the first PDU set to an upper layer.

The embodiment of the application does not specifically limit the receiving device. The receiving device may be, for example, a terminal device. As another example, the receiving device may be a network device, such as a base station.

In some embodiments, the first transmission policy may be autonomously determined by the receiving device, or the first transmission policy may be indicated to the receiving device by other devices, or the first transmission policy may be predefined in the protocol. For example, if the receiving device is a network device, the network device may autonomously determine the first transmission policy. For another example, if the receiving device is a terminal device, the terminal device may determine the first transmission policy according to an indication of the network device. The network device may send indication information to the terminal device, the indication information being used to indicate the first transmission policy.

In some embodiments, the first set of PDUs may have the following characteristics: the receiving device successfully receives a part of the data packets in the first PDU set, and also a part of the data packets are not successfully received, or only a part of the data packets in the first PDU set are successfully transmitted to the receiving device, and also a part of the data packets are not transmitted to the receiving device.

In some embodiments, the first transmission policy may be related to a type of the first set of PDUs. The first set of PDUs may be of different types and the first transmission strategy may be different. The first set of PDUs may include multiple types, e.g., the first set of PDUs may include a first type and a second type. The first type may be the type a described above and the second type may be the type B described above. Of course, the first set of PDUs may also include a greater number of types, e.g., the first set of PDUs may include 3 types, etc.

In some implementations, the first transmission policy may include the first protocol layer submitting the data packet that has been successfully received to an upper layer. If the first transmission policy includes that the first protocol layer submits the successfully received data packet to the upper layer, the receiving device may directly submit the successfully received data packet to the upper layer through the first protocol layer.

In some embodiments, the first transmission policy may include the first protocol layer not submitting the data packet that has been successfully received to an upper layer. If the first transmission policy includes that the first protocol layer does not deliver the data packet that has been successfully received to the upper layer, the receiving device may not deliver the data packet that has been successfully received to the upper layer through the first protocol layer after receiving a portion of the data packets in the first PDU set.

In some embodiments, the first transmission policy may include determining whether the first protocol layer delivers the data packet that has been successfully received to an upper layer according to a first condition. The first condition is not specifically limited, and the first condition may be a condition that triggers the first protocol layer to submit the successfully received data packet to the upper layer, or the first condition may also be a condition that triggers the first protocol layer not to submit the successfully received data packet to the upper layer. In some embodiments, the receiving device may submit the data packet that has been successfully received to the upper layer through the first protocol layer if the first condition is satisfied, and may not submit the data packet that has been successfully received to the upper layer through the first protocol layer if the first condition is not satisfied. In other embodiments, the receiving device may not submit the data packet that has been successfully received to the upper layer through the first protocol layer if the first condition is satisfied, and may submit the data packet that has been successfully received to the upper layer through the first protocol layer if the first condition is satisfied.

In some embodiments, the first transmission policy may include indicating to the lower layer whether to delete other data packets in the first PDU set after the partial data packets in the first PDU set are delivered to the upper layer through the first protocol layer. Other data packets may include lower layer non-aligned PDU slices and/or already aligned PDUs. If the first transmission policy includes an instruction to delete other data packets in the first PDU set to the lower layer, the lower layer does not submit to the first protocol layer but directly deletes the other data packets in the first PDU set after receiving the other data packets in the first PDU set. If the first transmission policy includes an indication to the lower layer that other data packets in the first set of PDUs are not to be deleted, the lower layer continues to submit the other data packets in the first set of PDUs to the first protocol layer after receiving the other data packets in the first set of PDUs.

Whether to delete other data packets in the first set of PDUs is indicated to the lower layer may be determined based on a second condition, which may be related to a condition that the first set of PDUs is able to be decoded correctly. For example, the first PDU set may include 100 packets, and if the number of packets exceeds 80, the first protocol layer may correctly decode the packets, and if the first protocol layer has delivered 80 packets to the upper layer, the first protocol layer may instruct the lower layer to delete other packets in the first PDU set. If the number of packets submitted by the first protocol layer to the upper layer is less than 80, the first protocol layer may instruct the lower layer to either not delete other packets in the first PDU set or to continue submitting other packets in the first PDU set to the first protocol layer.

In some embodiments, the first transmission policy may include whether to submit other data packets in the first PDU set to the upper layer after submitting a portion of the data packets in the first PDU set to the upper layer via the first protocol layer. After the first protocol layer submits a part of the data packets in the first PDU set to the upper layer, if other data packets in the first PDU set are received subsequently, the first protocol layer can determine whether to continue to submit other data packets in the first PDU set to the upper layer.

Whether to continue delivering other data packets in the first set of PDUs to the upper layer may be determined based on the last deliverable time of the first set of PDUs. For example, if the reception time of the other data packet is after the last deliverable time of the first PDU set, the first protocol layer may not deliver the other data packet to the upper layer and delete the other data packet. For another example, the first protocol layer may submit the other data packet to the upper layer if the reception time of the other data packet is before the last presentable time of the first PDU set.

In some embodiments, if the time at which the first protocol layer delivers a portion of the data packets in the first PDU set to the upper layer is the last deliverable time of the first PDU set, the first protocol layer may instruct the lower layer to delete other data packets and/or other data packet fragments in the first PDU set. If the first protocol layer delivers the partial data packets in the first PDU set to the upper layer before the last deliverable time of the first PDU set, the first protocol layer may not instruct the lower layer to delete other data packets and/or other data packet fragments in the first PDU set. And if the first protocol layer receives the data packet in the first PDU set submitted by the lower layer and the first protocol layer does not submit the data packet to the upper layer, the first protocol layer submits the data packet to the upper layer until the last deliverable time of the first PDU set. When the last deliverable time of the first PDU set arrives, the first protocol layer may instruct the lower layer to delete the data packet in the first PDU set and/or to fragment the data packet that has not been successfully reassembled.

In some embodiments, when the first protocol layer submits the data packet to the upper layer, the first protocol layer may perform the data packet according to a Sequence Number (SN) sequence of the data packet.

The first condition is described in detail below. The following describes an example taking a first condition as a condition for triggering the first protocol layer to deliver the successfully received data packet to the upper layer.

In some embodiments, the first condition may be associated with a first data packet, which may include data packets in the first set of PDUs that have been successfully received and/or data packets that have not been successfully received. In other words, the first condition may relate to a successfully received data packet in the first set of PDUs and/or the first condition may relate to an unsuccessfully received data packet in the first set of PDUs.

In some embodiments, the first condition may be related to one or more of the following information: the number of the first data packets, the number of bits of the first data packets, the proportion of the number of the first data packets to the total number of the data packets in the first PDU set, the proportion of the number of bits of the first data packets to the total number of the bits of the data packets in the first PDU set, and the position of the first data packets in the first PDU set.

In some embodiments, the first condition may be related to a number of first data packets. For example, the first condition may include that the number of first data packets is greater than or equal to a preset threshold, in other words, the first condition may include that the number of data packets that have been successfully received in the first PDU set is greater than or equal to a preset threshold, or the first condition may include that the number of data packets that have not been successfully received in the first PDU set is less than or equal to a preset threshold. For another example, the first condition may include that the number of first data packets is less than or equal to a preset threshold, in other words, the first condition may include that the number of data packets in the first PDU set that have been successfully received is less than or equal to a preset threshold, or the first condition may include that the number of data packets in the first PDU set that have not been successfully received is less than or equal to a preset threshold.

In some embodiments, the first condition may be related to a number of bits of the first data packet. For example, the first condition may include that the number of bits of the first data packet is greater than or equal to a preset threshold, in other words, the first condition may include that the number of bits of the data packet that has been successfully received in the first PDU set is greater than or equal to a preset threshold, or the first condition may include that the number of bits of the data packet that has not been successfully received in the first PDU set is less than or equal to a preset threshold. For another example, the first condition may include that the number of bits of the first data packet is less than or equal to a preset threshold, in other words, the first condition may include that the number of bits of the data packet that has been successfully received in the first PDU set is less than or equal to a preset threshold, or the first condition may include that the number of bits of the data packet that has not been successfully received in the first PDU set is less than or equal to a preset threshold.

The number of bits of different data packets in the first PDU set may be the same or different, which is not specifically limited in the embodiment of the present application.

In some embodiments, the first condition may relate to a ratio of a number of first data packets to a total number of data packets in the first set of PDUs. For example, the first condition may include a ratio of a number of first data packets to a total number of data packets in the first PDU set being greater than or equal to a preset threshold. For another example, the first condition may include that a ratio of the number of first data packets to the total number of data packets in the first PDU set is less than or equal to a preset threshold.

The ratio of the number of first data packets to the total number of data packets in the first PDU set may include: the proportion of the number of data packets in the first PDU set that have been successfully received to the total number of data packets in the first PDU set (hereinafter referred to as a first proportion), and/or the proportion of the number of data packets in the first PDU set that have not been successfully received to the total number of data packets in the first PDU set (hereinafter referred to as a second proportion). In some embodiments, the first condition may include the first ratio being greater than or equal to a preset threshold, or the first condition may include the second ratio being less than or equal to a preset threshold. In some embodiments, the first condition may include the first ratio being less than or equal to a preset threshold, or the first condition may include the second ratio being less than or equal to a preset threshold.

In some embodiments, the first condition may relate to a ratio of a number of bits of the first data packet to a total number of bits of the data packets in the first set of PDUs. For example, the first condition may include that a ratio of the number of bits of the first data packet to the total number of bits of the data packets in the first PDU set is greater than or equal to a preset threshold. For another example, the first condition may include that a ratio of the number of bits of the first data packet to the total number of bits of the data packets in the first PDU set is less than or equal to a preset threshold.

The proportion of the number of bits of the first data packet to the total number of bits of the data packets in the first PDU set may include: the proportion of the number of bits of the data packets in the first PDU set that have been successfully received to the total number of bits of the data packets in the first PDU set (hereinafter referred to as the third proportion), and/or the proportion of the number of bits of the data packets in the first PDU set that have not been successfully received to the total number of bits of the data packets in the first PDU set (hereinafter referred to as the fourth proportion). In some embodiments, the first condition may include the third ratio being greater than or equal to a preset threshold, or the first condition may include the fourth ratio being greater than or equal to a preset threshold. In some embodiments, the first condition may include the third ratio being less than or equal to a preset threshold, or the first condition may include the fourth ratio being less than or equal to a preset threshold.

In some embodiments, the first condition may relate to a location of the first data packet in the first set of PDUs. For example, the first condition may include that a position of the first data packet in the first PDU set is a preset position. For another example, the location of the first data packet in the first set of PDUs may include a location continuity of the first data packet in the first set of PDUs, that is, the first condition is related to the location continuity of the first data packet.

In some embodiments, the first condition may relate to a position continuity of the first data packet. For example, the first condition may include a position continuation of the first data packet, in other words, the first condition may include a position continuation of the data packet that has been successfully received in the first PDU set, or the first condition may include a position continuation of the data packet that has not been successfully received in the first PDU set. For another example, the first condition may include a location discontinuity of the first data packet, in other words, the first condition may include a location discontinuity of the data packet that has been successfully received in the first PDU set, or the first condition may include a location discontinuity of the data packet that has not been successfully received in the first PDU set.

As can be seen from the foregoing description, in some embodiments, the receiving device may submit the successfully received data packet to the upper layer through the first protocol layer if the first condition is satisfied, and/or the receiving device may not submit the successfully received data packet to the upper layer through the first protocol layer if the first condition is not satisfied. The embodiment of the application may also refer to the first condition as a condition for triggering the first protocol layer to submit the successfully received data packet to the upper layer.

In some embodiments, the first condition may include one or more of the following: the number of data packets in the first set of PDUs that have been successfully received is greater than or equal to a first threshold; the number of unsuccessfully received data packets in the first PDU set is less than or equal to a second threshold; the number of bits of the data packet which is successfully received in the first PDU set is greater than or equal to a third threshold; the number of bits of the unsuccessfully received data packet in the first PDU set is smaller than or equal to a fourth threshold; the number of the data packets which are successfully received in the first PDU set, the proportion of the number of the data packets in the first PDU set, is larger than or equal to a fifth threshold value; the number of unsuccessfully received data packets in the first PDU set is smaller than or equal to a sixth threshold value, wherein the proportion of the number of unsuccessfully received data packets in the first PDU set is equal to the total number of data packets in the first PDU set; the bits of the data packets which are successfully received in the first PDU set are more than or equal to a seventh threshold value, wherein the proportion of the bits of the data packets in the first PDU set is larger than or equal to the seventh threshold value; the unsuccessfully received data packet bits in the first PDU set account for the proportion of the total data packet bit number in the first PDU set, and are smaller than or equal to an eighth threshold value; the number of consecutive data packets in the first set of PDUs that have been successfully received is greater than or equal to a ninth threshold; the number of the continuous data packets of the unsuccessful received positions in the first PDU set is less than or equal to a tenth threshold; the number of bits of the position-continuous data packets which have been successfully received in the first PDU set is greater than or equal to an eleventh threshold; the number of bits of the continuous data packet of the unsuccessful received position in the first PDU set is less than or equal to a twelfth threshold; the positions of the data packets which are successfully received in the first PDU set are continuous; the unsuccessfully received data packets in the first PDU set are contiguous in location.

The first conditions described above may be used alone or in combination with each other, and the embodiment of the present application is not particularly limited. For example, the first condition may include the number of data packets in the first set of PDUs that have been successfully received being greater than or equal to a first threshold and the number of bits of the data packets in the first set of PDUs that have been successfully received being greater than or equal to a third threshold.

As can be seen from the foregoing description, the types of the first PDU sets are different, and the corresponding first transmission strategies may be different. Taking an example that the first transmission policy includes determining whether the first protocol layer delivers the successfully received data packet to the upper layer according to the first condition, the first conditions corresponding to the different types of first PDU sets may be different.

In some embodiments, different condition thresholds may be set for different types of first PDU sets, which may be one or more of the first through twelfth thresholds described above. The following is an example.

If the type of the first set of PDUs is the first type, the first condition may include one or more of:

condition 1A: among the data packets in one PDU set, the number of successfully received data packets is greater than or equal to P1;

Condition 2A: among the data packets in one PDU set, the number of unsuccessfully received data packets is less than or equal to P2;

condition 3A: in the data packet in one PDU set, the bit number of the successfully received data packet is more than or equal to P3;

condition 4A: in the data packet in one PDU set, the bit number of the unsuccessfully received data packet is smaller than or equal to P4;

condition 5A: the number of successfully received data packets in a PDU set is more than or equal to P5% in proportion to the total number of the data packets in the PDU set;

condition 6A: the number of unsuccessfully received data packets in a PDU set accounts for less than or equal to P6% of the total data packets in the PDU set;

condition 7A: in the data packet in one PDU set, the bit number of the successfully received data packet accounts for the proportion of the total bit number of the data packet in the PDU set, and is more than or equal to P7%;

condition 8A: in the data packet in one PDU set, the number of unsuccessfully received data packet bits accounts for the proportion of the total number of data packet bits in the PDU set, which is less than or equal to P8%;

condition 9A: among the data packets in one PDU set, the successfully received data packets are continuous in position;

condition 10A: among the data packets in one PDU set, the unsuccessfully received data packets are continuous in position;

Condition 11A: among the data packets in one PDU set, the number of the successfully received data packets with continuous positions is larger than or equal to N1;

condition 12A: among the data packets in one PDU set, the number of the data packets which are not successfully received and are continuous in position is less than or equal to N2;

condition 13A: among the data packets in one PDU set, the number of bits of the successfully received data packet with continuous positions is larger than or equal to N3;

condition 14A: among the data packets in one PDU set, the number of bits of the unsuccessfully received data packet with continuous positions is less than or equal to N4.

The above conditions may be used alone or in combination with each other, for example, one or more of the conditions 1A to 8A may be used in combination with one or more of the conditions 9A to 14A.

If the type of the first set of PDUs is the second type, the first condition may include one or more of the following:

condition 1B: among the data packets in one PDU set, the number of successfully received data packets is greater than or equal to K1;

condition 2B: among the data packets in one PDU set, the number of unsuccessfully received data packets is less than or equal to K2;

condition 3B: in the data packet in one PDU set, the bit number of the successfully received data packet is greater than or equal to K3;

Condition 4B: in the data packet in one PDU set, the bit number of the unsuccessfully received data packet is smaller than or equal to K4;

condition 5B: the number of successfully received data packets in a PDU set is greater than or equal to K5% in proportion to the total number of the data packets in the PDU set;

condition 6B: the number of unsuccessfully received data packets in a PDU set accounts for less than or equal to K6% of the total data packets in the PDU set;

condition 7B: in the data packet in one PDU set, the bit number of the successfully received data packet accounts for the proportion of the total bit number of the data packet in the PDU set, and is more than or equal to K7%;

condition 8B: in the data packet in one PDU set, the number of unsuccessfully received data packet bits accounts for the proportion of the total number of data packet bits in the PDU set, which is less than or equal to K8%;

condition 9B: among the data packets in one PDU set, the successfully received data packets are continuous in position;

condition 10B: among the data packets in one PDU set, the unsuccessfully received data packets are continuous in position;

condition 11B: among the data packets in one PDU set, the number of the successfully received data packets with continuous positions is greater than or equal to M1;

condition 12B: among the data packets in one PDU set, the number of the data packets which are not successfully received and are continuous in position is less than or equal to M2;

Condition 13B: among the data packets in one PDU set, the number of bits of the successfully received data packet with continuous positions is more than or equal to M3;

condition 14B: among the data packets in one PDU set, the number of bits of the unsuccessfully received data packet with continuous positions is less than or equal to M4.

The above conditions may be used alone or in combination with each other, for example, one or more of the conditions 1B to 8B may be used in combination with one or more of the conditions 9B to 14B.

In some embodiments, if the receiving device determines not to deliver the data packet that has been successfully received to an upper layer via the first protocol layer, the receiving device may discard the received data packet or not discard the received data packet. Whether to discard the received data packet may be determined autonomously by the receiving device, may be indicated to the receiving device by other devices, or may be predefined in the protocol. For example, if the receiving device is a terminal device, the network device may indicate to the terminal device whether to discard the data packet that has been received.

The first condition described above may be valid only for the received data, or may be valid for both the received data and the transmitted data. For example, if the receiving device is a terminal device, the network device may indicate to the terminal device that the first condition is valid only for downlink data, or may indicate to the terminal device that the first condition is valid for both uplink data and downlink data, or may not indicate to the terminal device. If the network device does not indicate to the terminal device whether the first condition is valid for both uplink data and downlink data, the terminal device may default that the first condition is valid for both uplink data and downlink data.

The first condition is valid for transmitting data, it being understood that the terminal device or the network device may determine a transmission policy for transmitting data according to the first condition.

The data transmission process will be described below.

Fig. 5 is a flow chart of another wireless communication method according to an embodiment of the present application.

Referring to fig. 5, in step S510, the transmitting device determines a second transmission policy for determining a transmission manner in which data packets in the second PDU set are transmitted to the receiving device.

The transmitting device is not particularly limited in the embodiment of the present application. The transmitting device may be a terminal device, for example. As another example, the transmitting device may be a network device, such as a base station.

In some embodiments, the second transmission policy may be autonomously determined by the transmitting device, or the first transmission policy may be indicated to the transmitting device by other devices, or the first transmission policy may be predefined in the protocol. For example, if the transmitting device is a network device, the network device may autonomously determine the first transmission policy. For another example, if the transmitting device is a terminal device, the terminal device may determine the first transmission policy according to an indication of the network device. The network device may send indication information to the terminal device, the indication information being used to indicate the second transmission policy.

In some embodiments, the first set of PDUs may have the following characteristics: the transmitting device successfully transmits a part of the data packets in the first PDU set, and also a part of the data packets are not successfully transmitted, or only a part of the data packets in the first PDU set are successfully transmitted to the receiving device, and also a part of the data packets are not transmitted to the receiving device.

In some embodiments, the second transmission policy may be related to a type of the second set of PDUs. The second set of PDUs may be of different types and the second transmission strategy may be different. The second set of PDUs may include multiple types, e.g., the second set of PDUs may include a first type and a second type. The first type may be the type a described above and the second type may be the type B described above. Of course, the second set of PDUs may also include a greater number of types, e.g., the second set of PDUs may include 3 types, etc.

In some embodiments, the second transmission policy may be related to one or more of the following information: transmission resources of the data packet; a delay budget range for the data packet; the second PDU integrates the conditions of power transmission; whether to discard the transmission of the remaining data packets.

In some embodiments, the second transmission policy may be associated with transmission resources of the data packet. The transmission resources of the data packet may include a Transport Block (TB) for transmitting the data packet and/or a block error rate (BLER) of the transmission resources of the data packet. In other words, the second transmission policy may be related to the TB used for transmitting the data packet and/or the second transmission policy may be related to the BLER of the transmission resources of the data packet.

In some embodiments, if the type of the second set of PDUs is the first type, the second transmission policy may be related to one or more of the following: transmission resources of the data packet, and delay budget range of the data packet. For example, if the type of the second set of PDUs is the first type, the second transmission policy may be related to one or more of the following: TB for transmitting data packets, BLER for transmission resources, delay budget range for data packets. The specific contents of the second transmission policy will be described below when the type of the second PDU set is the first type.

In some embodiments, the second transmission policy may be associated with transmission resources of the data packet. For example, the second transmission policy may include that a plurality of data packets belonging to the same PDU set are transmitted through the same transmission resource. The plurality of data packets may be all data packets in one PDU set, or may be part of data packets in one PDU set. If there are more data packets in one PDU set, one transmission resource is insufficient to transmit all the data packets in the PDU set, the data packets in the PDU set can be transmitted through a plurality of transmission resources.

Taking the example that the transmission resource includes a TB, the second transmission policy may include that a plurality of data packets belonging to the same PDU set may be transmitted through the same TB. That is, the transmitting device may transmit a plurality of data packets in the second PDU set through the same TB.

Taking the example that the transmission resources include BLER of the transmission resources, the second transmission policy may include that a plurality of data packets belonging to the same PDU set are transmitted through the transmission resources having the same BLER. That is, the transmitting device may transmit a plurality of data packets in the second set of PDUs through transmission resources having the same BLER.

As can be seen from the foregoing description, the receiving device can correctly decode the first type of PDU set after all the PDU sets are required to be transmitted to the receiving device, that is, if only a part of the PDU sets are transmitted to the receiving device, it is not useful for the receiving device. Based on this, the embodiment of the application can transmit the data packets of the same PDU set through the same transmission resource, and can ensure that the data packets on the transmission resource can reach the receiving device together.

In some embodiments, the second transmission policy may be related to a range of delay budgets for the data packets. For example, the second transmission policy may include dropping transmission of the remaining one or more data packets if the transmitting device expects failure to complete transmission of the remaining data packets within the second set of PDUs within the delay budget. If the transmitting device has transmitted a portion of the data packets in the second set of PDUs, but the remaining data packets cannot be transmitted within the transmission delay, the transmitting device may discard the transmission of the remaining data packet or packets. In some embodiments, the transmitting device may forego transmitting all of the remaining data packets. Of course, the transmitting device may also discard the transmission of the remaining portion of the data packet.

Since the transmitting device cannot transmit all the data packets in the second PDU set within the transmission delay range, the transmitting device may discard the remaining one or more data packets in order to avoid waste of transmission resources.

In some embodiments, the second transmission policy may include: and if the partial data packet in the second PDU set is successfully transmitted and the partial data packet is not successfully transmitted, transmitting the data packet which is not successfully transmitted by using the transmission resource of the first BLER, wherein the first BLER is smaller than or equal to the BLER of the transmission resource used for transmitting the data packet last time.

The embodiment of the present application does not specifically limit the data packet that has not been successfully transmitted and the data packet that was transmitted last time. The data packet which is not successfully transmitted may be a data packet which is not transmitted yet, or may be a data packet which is already transmitted but fails to be transmitted. The last transmitted data packet may be a successfully transmitted data packet or a data packet with transmission failure. The following is an example.

For example, the second transmission policy may include: if the partial data packet transmission within the second PDU set is successful, the partial data packet transmission fails, and the partial data packet is transmitted using a transmission resource having a first BLER. Wherein the first BLER is less than or equal to a BLER of a transmission resource used when the transmission of the portion of the data packet fails. If the partial data packet transmission fails, the transmitting device may transmit the partial data packet using a transmission resource with a lower BLER. Transmitting the data packet using transmission resources with lower BLER may increase the probability of successful transmission of the data packet. The data packet transmission failure may be a first transmission failure of the data packet or an nth transmission failure of the data packet, where N is a positive integer greater than or equal to 1.

For another example, the second transmission policy may include: if a portion of the data packets within the second set of PDUs is successfully transmitted, the portion of the data packets not yet transmitted is transmitted using a transmission resource having a first BLER. Wherein the first BLER is less than or equal to a BLER of a transmission resource used when the data packet is successfully transmitted. The probability of successful transmission of partial data packets can be improved by directly using a lower BLER to transmit data packets which are not transmitted yet.

From the above, it can be seen that the initial transmission and/or retransmission of the data packet in the second PDU set that has not been successfully transmitted can be transmitted using the transmission resource with the lower BLER, so that the probability of successful transmission of the data packet can be improved.

The terminal device may also send a request message to the network device requesting transmission resources with the first BLER (i.e. transmission resources with a lower BLER) for transmitting or retransmitting part of the data packets in the second set of PDUs, if the sending device is the terminal device.

The above describes the relevant content of the second transmission strategy when the type of the second set of PDUs is the first type. The relevant content of the second transmission strategy when the second set of PDUs is of the second type will be described below.

In some embodiments, if the type of the second set of PDUs is a second type, the second transmission policy may be related to one or more of the following: the second PDU integrates the conditions for power transmission over the range of the packet's delay budget.

The second PDU assembly power transmission may refer to the receiving device considering the second PDU set as available, or the receiving device may be able to decode the corresponding picture. The condition for the second PDU integration work transfer may be the first condition described above. For example, the conditions for the second PDU integrated power transmission may include one or more of conditions 1B-14B described above.

In some embodiments, the second transmission policy may be related to a range of delay budgets for the data packets. If the transmitting device expects that the transmission of the remaining data packets in the second PDU set cannot be completed within the delay budget, the transmitting device may continue to transmit the remaining data packets, or, alternatively, the transmitting device may transmit the remaining data packets as much as possible. If the type of the second PDU set is the second type, the receiving device can correctly decode the corresponding image when not receiving all the data packets in the second PDU set. Therefore, the transmitting device can transmit as many data packets as possible, as long as it is ensured that the receiving device can decode the corresponding image.

In some embodiments, the second transmission policy may be related to a condition of the second PDU integration work transmission. For example, the transmitting device may determine whether to discard transmission of remaining data packets in the second PDU set based on a condition of the second PDU set to integrate the power transmission. For example, if the data packets already transmitted in the second PDU set satisfy the condition for the second PDU integration work transmission, the transmitting device may discard the transmission of the remaining data packets. For another example, if the data packets already transmitted in the second PDU set do not satisfy the condition for the second PDU integration work transmission, the transmitting device may continue to transmit the remaining data packets so that the successfully transmitted data packets satisfy the condition for the second PDU integration work transmission. Of course, in some embodiments, if the data packets already transmitted in the second PDU set meet the condition of the second PDU integrated power transmission, the transmitting device may also continue to transmit the remaining data packets.

In some embodiments, the second transmission policy may relate to a delay budget range of the data packet and conditions for integrated power transmission of the second PDU. For example, the second transmission policy may include: if the transmitting device expects that the transmission of the remaining data packets in the second set of PDUs cannot be completed within the transmission delay, it may be determined whether to discard the remaining one or more data packets based on the conditions for the second set of PDUs to be successfully transmitted.

The following is an example of the conditions for the different second PDU integrated power transmission, in connection with fig. 5. Fig. 5 shows 8 data packets in the second PDU set, wherein 4 data packets have been successfully transmitted and 4 data packets have not been successfully transmitted.

In case 1, if the condition of the second PDU integration work transmission includes that the number of data packets successfully transmitted to the receiving device in the second PDU set is greater than or equal to K1, the transmitting device may determine whether to discard the remaining one or more data packets according to K1. If the value of K1 is 5, the transmitting device may try to transmit one or more of the remaining 4 data packets. For example, to ensure that packets are transmitted in sequence, the transmitting device may try to transmit packet number 5.

In case 2, if the condition for the second PDU aggregate power transmission includes that the number of unsuccessfully transmitted packets in the second PDU set is less than or equal to K2, the transmitting device may determine whether to discard the remaining one or more packets according to K2. If the value of K2 is 3, the transmitting device may try to transmit one or more of the remaining 4 data packets. For example, to ensure that packets are transmitted in sequence, the transmitting device may try to transmit packet number 5.

In case 3, if the condition for the integrated power transmission of the second PDU includes that the number of bits of the data packet successfully transmitted in the second PDU set is greater than or equal to K3, the transmitting device may determine whether to discard the remaining one or more data packets according to K3. If the value of K3 is 7000 bits, the transmitting device can calculate how many bits need to be retransmitted according to the total number of bits of the

data packets

1, 2, 3 and 4, so as to meet the condition of the second PDU integrated power transmission, and determine whether to transmit one or more of the

data packets

5, 6, 7 and 8 according to the condition.

In case 4, if the condition for the second PDU aggregate power transmission includes that the number of bits of the unsuccessfully transmitted data packet in the second PDU set is less than or equal to K4, the transmitting device may determine whether to discard the remaining one or more data packets according to K4. If the value of K3 is 2000 bits, the transmitting device may calculate, according to the total number of bits of the data packets No. 5, 6, 7, 8, how many more bits need to be retransmitted to satisfy the condition of the second PDU for integrated power transmission, and determine whether to transmit one or more of the data packets No. 5, 6, 7, 8 according to the condition.

In case 5, if the condition of the second PDU integration work transmission includes the number of data packets successfully transmitted in the second PDU set, which is a proportion of the total number of data packets in the second PDU set, being greater than or equal to K5%, the transmitting device may determine whether to discard the remaining one or more data packets according to K5%. If the value of K5% is 75%, the transmitting device needs to transmit 6 packets to satisfy the condition for the second PDU integration work transmission, and the transmitting device will try to transmit at least 2 packets out of the remaining 4 packets. For example, to ensure that packets are transmitted in sequence, the transmitting device may try to transmit packets No. 5 and No. 6.

In case 6, if the condition of the second PDU aggregate power transmission includes the number of unsuccessfully transmitted packets in the second PDU set, which is a proportion of the total number of packets in the second PDU set, being less than or equal to K6%, the transmitting device may determine whether to discard the remaining one or more packets according to K6%. If the value of K6% is 25%, the transmitting device needs to transmit 6 packets to satisfy the condition for the second PDU integration work transmission, and the transmitting device will try to transmit at least 2 packets out of the remaining 4 packets. For example, to ensure that packets are transmitted in sequence, the transmitting device may try to transmit packets No. 5 and No. 6.

In case 7, if the condition of the integrated power transmission of the second PDU includes the number of bits of the data packet successfully transmitted in the second PDU set, which is a proportion of the total number of bits of the data packet in the second PDU set, being greater than or equal to K7%, the transmitting device may determine whether to discard the remaining one or more data packets according to K7%. The transmitting device may calculate how many bits need to be retransmitted according to the ratio of the total number of bits of the data packets 1-4 to the total number of bits of the data packets 1-8, so as to satisfy the condition of the second PDU for integrated power transmission, and determine whether to transmit one or more of the data packets 5-8 according to the ratio.

In case 8, if the condition of the integrated power transmission of the second PDU includes the number of bits of the data packet that is not successfully transmitted in the second PDU set, which is less than or equal to K8%, the transmitting device may determine whether to discard the remaining one or more data packets according to K8%. The transmitting device may calculate how many bits need to be retransmitted according to the ratio of the total number of bits of the number 5-8 data packets to the total number of bits of the number 1-8 data packets, so as to satisfy the condition of the second PDU for integrated power transmission, and determine whether to transmit one or more of the number 5-8 data packets according to the condition.

In case 9, if the condition of the second PDU integration work transmission includes that the positions of the successfully transmitted data packets in the second PDU set are continuous, the transmitting device may discard one or more of the data packets 5 to 8 and may continue to transmit one or more of the data packets 5 to 8 because the successfully transmitted data packets are continuous data packets 1 to 4.

In case 10, if the condition of the second PDU integration work transmission includes that the positions of the unsuccessfully transmitted data packets in the second PDU set are continuous, since the unsuccessfully transmitted data packets are continuous data packets 5-8, the transmitting device may discard one or more of the data packets 5-8, and may also continue to transmit one or more of the data packets 5-8.

In case 11, if the condition for the second PDU integration work transmission includes that the number of the position-continuous data packets successfully received in the second PDU set is greater than or equal to M1, the transmitting device may determine whether to discard the remaining one or more data packets according to M1. If M1 has a value of 6, the transmitting device will try to transmit at least 2 of the remaining 4 data packets. For example, to ensure that packets are transmitted in sequence, the transmitting device may try to transmit packets No. 5 and No. 6.

In case 12, if the condition for the second PDU integration work transmission includes that the number of the position-continuous data packets not successfully received in the second PDU set is less than or equal to M2, the transmitting device may determine whether to discard the remaining one or more data packets according to M2. If the value of M2 is 3, the transmitting device may try to transmit one or more of the remaining 4 data packets. For example, to ensure that packets are transmitted in sequence, the transmitting device may try to transmit packet number 5.

In case 13, if the condition for the second PDU integration work transmission includes that the number of bits of the data packet successfully transmitted in the second PDU set at the position is greater than or equal to M3, the transmitting device may determine whether to discard the remaining one or more data packets according to M3. If the value of M3 is 7000 bits, the transmitting device can calculate how many bits need to be retransmitted according to the total bit number of the data packets No. 1, 2, 3 and 4, so as to meet the condition of the second PDU integrated power transmission, and determine whether to transmit one or more of the data packets No. 5, 6, 7 and 8 according to the condition.

In case 14, if the condition for the second PDU integration work transmission includes that the number of bits of the data packet with the consecutive positions of unsuccessful transmission in the second PDU set is less than or equal to M4, the transmitting device may determine whether to discard the remaining one or more data packets according to M4. If the value of M4 is 2000 bits, the transmitting device may calculate, according to the total number of bits of the data packets No. 5, 6, 7, 8, how many more bits need to be retransmitted to satisfy the condition of the second PDU for integrated power transmission, and determine whether to transmit one or more of the data packets No. 5, 6, 7, 8 according to the condition.

It should be noted that the above cases 1 to 14 may be used alone or in combination with each other. For example, one or more of cases 1-8 may be used in combination with one or more of cases 9-14.

The above describes in detail how the receiving device and/or the transmitting device determine the scheme of the transmission policy according to the type of the PDU set, and the manner in which the type of the PDU set is indicated to the receiving device and the transmitting device is described below. It will be appreciated that the methods described above and those described below may be used in combination with each other. For example, when the receiving apparatus or the transmitting apparatus is a terminal apparatus, the receiving apparatus or the transmitting apparatus may also use the method shown in fig. 6 below. For another example, when the receiving device or the transmitting device is a network device, the receiving device or the transmitting device may also use the method shown in fig. 7 below.

Fig. 6 is another method of wireless communication provided in an embodiment of the present application, which provides an explicit scheme for how to indicate the type of PDU set to the terminal device. In addition, by indicating the type of the PDU set to the terminal equipment, the terminal equipment can perform corresponding data processing according to the type of the PDU set, which is beneficial to increasing the probability of successful data transmission, so that more PDU sets can be decoded and used at the application layer of the receiving party, and unnecessary data transmission is reduced.

Referring to fig. 6, in step S610, the terminal device receives first indication information for indicating a type of PDU set.

The set of PDUs may include multiple types, for example, the first set of PDUs may include a first type and a second type. The first type may be the type a described above and the second type may be the type B described above. Of course, the first set of PDUs may also include a greater number of types, e.g., the set of PDUs may include 3 types, etc.

The first indication information is carried in a plurality of ways. For example, the first indication information may be carried in control signaling. For another example, the first indication information may be carried in a user plane message.

In some embodiments, the first indication information may be sent by the application server to the terminal device. The application server may send the first indication information to the terminal device if the type of the PDU set is determined by the application server.

The application server transmitting the first indication information to the terminal device may mean that the application server transmits the first indication information to the terminal device through one or more of a session management function (session management function, SMF), an application function (application function, AF), a user plane function (user plane function, UPF), and a base station.

In some embodiments, the first indication information may be sent by an application layer of the terminal device to an access layer of the terminal device. If the type of the PDU set is determined by the application layer of the terminal device, the application layer of the terminal device may send first indication information to the access layer of the terminal device.

In some embodiments, the first indication information may also be sent by the network device to the terminal device. For example, the application server may indicate the type of the PDU set to the network device, and the network device sends the first indication information to the terminal device after receiving the indication of the application server. The network device sending the first indication information to the terminal device may refer to the network device sending the first indication information to an access layer of the terminal device.

The application server in the embodiment of the present application is not particularly limited. The application server may be a server corresponding to a service type. Taking XR service as an example, the application server may be an XR server.

In some embodiments, the set of PDUs may include an uplink set of PDUs and/or a downlink set of PDUs. The first indication information may be used to indicate a type of an uplink PDU set and/or a type of a downlink PDU set. In some embodiments, the type of the uplink PDU set and the type of the downlink PDU set may be indicated by the same indication information, or the type of the uplink PDU set and the type of the downlink PDU set may be indicated by different indication information.

In some embodiments, the type of PDU set may be determined by the application layer of the terminal device and/or the application server. For example, the type of the uplink PDU set is determined by the application layer of the terminal device, and the type of the downlink PDU set is determined by the application server.

In some embodiments, the terminal device may negotiate the type of PDU set with the application server. For example, the terminal device may indicate the type of the uplink PDU set to the application server, or the application server may indicate the type of the downlink PDU set to the terminal device.

In some embodiments, the first indication information may be used to indicate a type of each PDU set. In other embodiments, the first indication information may be used to indicate a type of PDU set corresponding to the data stream. In other embodiments, the first indication information may be used to indicate a type of a PDU set corresponding to a Data Radio Bearer (DRB). The type of the PDU set corresponding to the DRB may be determined based on the type of the PDU set corresponding to the data stream and the correspondence between the data stream and the DRB. In other embodiments, the first indication information may be used to indicate a type of PDU set corresponding to the first protocol entity. The type of the PDU set corresponding to the first protocol entity may be determined based on the type of the PDU set corresponding to the data stream and the correspondence between the data stream and the first protocol entity. The first protocol entity may be, for example, a PDCP entity. The data flow may be, for example, a quality of service (quality of service, qoS) flow.

In some embodiments, the type of PDU set corresponding to the data stream may be determined by an application layer of the terminal device and/or an application server. For example, the type of the PDU set corresponding to the uplink data stream may be determined by the application layer of the terminal device, and the type of the PDU set corresponding to the downlink data stream may be determined by the application server.

In some embodiments, the type of PDU set corresponding to the DRB and/or the type of PDU set corresponding to the first protocol entity may be determined by one or more of the following: an application layer of the terminal equipment, an access layer of the terminal equipment and the network equipment. For example, the type of the PDU set corresponding to the uplink DRB and/or the type of the PDU set corresponding to the uplink first protocol entity may be determined by an application layer of the terminal device and/or an access layer of the terminal device, and the type of the PDU set corresponding to the downlink DRB and/or the type of the PDU set corresponding to the downlink first protocol entity may be determined by the network device.

If the type of the PDU set corresponding to the data stream is determined by the application layer of the terminal device, the terminal device may further send second indication information to the network device, where the second indication information is used to indicate the type of the PDU set. The second indication information may be used to indicate one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

The embodiment of the present application does not specifically limit the carrying manner of the second indication information. For example, the second indication information may be carried in RRC signaling. For another example, the second indication information may be carried in a MAC Control Element (CE). For another example, the second indication information may be carried in a PDCP control PDU.

In some embodiments, the terminal device may also indicate the first condition described above, conditions 1A-14A and/or conditions 1B-14B described above, to the network device when sending the second indication information to the network device. In some embodiments, the terminal device may indicate to the network device the condition 1A-14A and/or the condition 1B-14B corresponding to the downlink data, so that the network device determines a scheduling policy for transmitting the downlink data. In some embodiments, the terminal device may indicate the condition 1A-14A and/or the condition 1B-14B corresponding to the uplink data to the network device, so that the network device determines the size of the data amount that needs to be transmitted by the terminal device, thereby reasonably scheduling the terminal device.

In some embodiments, the terminal device may determine the type of the PDU set corresponding to the DRB according to the type of the PDU set corresponding to the data stream and the correspondence between the data stream and the DRB. The correspondence of the data flows and DRBs may be indicated by the network device to the terminal device.

In some embodiments, the terminal device may determine the type of the PDU set corresponding to the first protocol entity according to the type of the PDU set corresponding to the data stream and the correspondence between the data stream and the first protocol entity. The correspondence of the data flow and the first protocol entity may be indicated by the network device to the terminal device.

In some embodiments, the type of the PDU set corresponding to the DRB may be determined by an application layer of the terminal device or may be determined by an access layer of the terminal device.

In some embodiments, the type of the PDU set corresponding to the first protocol entity may be determined by an application layer of the terminal device or may be determined by an access layer of the terminal device.

For example, the network device may indicate the correspondence between the data stream and the DRB to an access layer of the terminal device, the access layer of the terminal device may indicate the correspondence between the data stream and the DRB to an application layer of the terminal device, and the application layer of the terminal device may determine the type of the PDU set corresponding to the DRB based on the type of the PDU set corresponding to the data stream and the correspondence between the data stream and the DRB. In some embodiments, the application layer of the terminal device may indicate the type of the PDU set corresponding to the DRB to the access layer of the terminal device. In some embodiments, the access layer of the terminal device may indicate the type of PDU set corresponding to the DRB to the network device.

For another example, the network device may indicate the correspondence between the data stream and the DRB to the access layer of the terminal device, and the access layer of the terminal device may request the type of the PDU set corresponding to the data stream from the application layer of the terminal device. The access layer of the terminal device may determine the type of the PDU set corresponding to the DRB based on the type of the PDU set corresponding to the data stream and the correspondence between the data stream and the DRB. In some embodiments, the access layer of the terminal device may indicate the type of PDU set corresponding to the DRB to the network device.

For another example, the network device may indicate a correspondence between the data stream and the first protocol entity to an access layer of the terminal device, the access layer of the terminal device may indicate a correspondence between the data stream and the first protocol entity to an application layer of the terminal device, and the application layer of the terminal device may determine a type of the PDU set corresponding to the first protocol entity based on the type of the PDU set corresponding to the data stream and the correspondence between the data stream and the first protocol entity. In some embodiments, the application layer of the terminal device may indicate the type of the PDU set corresponding to the first protocol entity to the access layer of the terminal device. In some embodiments, the access layer of the terminal device may indicate to the network device the type of the PDU set corresponding to the first protocol entity.

For another example, the network device may indicate the correspondence between the data stream and the first protocol entity to an access layer of the terminal device, and the access layer of the terminal device may request the type of the PDU set corresponding to the data stream from an application layer of the terminal device. The access layer of the terminal device may determine the type of the PDU set corresponding to the first protocol entity based on the type of the PDU set corresponding to the data stream and the correspondence between the data stream and the first protocol entity. In some embodiments, the access layer of the terminal device may indicate to the network device the type of the PDU set corresponding to the first protocol entity.

In some embodiments, the network device may send first indication information to the terminal device, the first indication information being usable to indicate one or more of: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

In some embodiments, if the type of PDU set corresponding to the data stream is determined by the application server, the application server may indicate the type of PDU set corresponding to the data stream to the network device. In some embodiments, the network device may indicate the type of PDU set corresponding to the data stream directly to the terminal device. In other embodiments, the network device may determine the type of the PDU set corresponding to the DRB according to the PDU set type corresponding to the data flow and the correspondence between the data flow and the DRB. In addition, the network device may further send first indication information to the terminal device, where the first indication information is used to indicate a type of the PDU set corresponding to the DRB. In other embodiments, the network device may determine the type of the PDU set corresponding to the first protocol entity according to the PDU set type corresponding to the data stream and the correspondence between the data stream and the first protocol entity. In addition, the network device may also send first indication information to the terminal device, where the first indication information is used to indicate a type of the PDU set corresponding to the first protocol entity

If the network device determines the type of the PDU set corresponding to the uplink DRB and the type of the PDU set corresponding to the downlink DRB, the network device sends first indication information to the terminal device, where the first indication information may be used to indicate the type of the PDU set corresponding to the uplink DRB, or the first indication information may be used to indicate the type of the PDU set corresponding to the downlink DRB, or the first indication information may be used to indicate the type of the PDU set corresponding to the uplink DRB and the type of the PDU set corresponding to the downlink DRB at the same time.

If the network device determines the type of the PDU set corresponding to the uplink first protocol entity and the type of the PDU set corresponding to the downlink first protocol entity, the network device sends first indication information to the terminal device, where the first indication information may be used to indicate the type of the PDU set corresponding to the uplink first protocol entity, or the first indication information may be used to indicate the type of the PDU set corresponding to the downlink first protocol entity, or the first indication information may be used to indicate the type of the PDU set corresponding to the uplink first protocol entity and the type of the PDU set corresponding to the downlink first protocol entity at the same time.

Fig. 7 is another wireless communication method according to an embodiment of the present application, which provides an explicit scheme for indicating the type of PDU set to the network device. In addition, by indicating the type of the PDU set to the network device, the network device can perform corresponding data processing according to the type of the PDU set, which is beneficial to increasing the probability of successful data transmission, so that more PDU sets can be decoded and used at the application layer of the receiving party, and unnecessary data transmission is reduced.

Referring to fig. 7, the network device receives third indication information for indicating a type of PDU set at step S710.

In some embodiments, the third indication information may be sent by the terminal device to the network device, e.g. the third indication information may be sent by an access layer of the terminal device to the network device. If the type of the PDU set is determined by the application layer of the terminal device, the application layer of the terminal device may send third indication information to the network device through the access layer of the terminal device.

In some embodiments, the third indication information may be sent to the network device by the application server. If the type of the PDU set is determined by the application server, the application server may send a third indication to the network device.

The application server sending the third indication information to the network device may refer to the application server sending the third indication information to the network device through one or more of SMF, AF and UPF.

In some embodiments, the set of PDUs may include an uplink set of PDUs and/or a downlink set of PDUs. The third indication information may be used to indicate a type of an uplink PDU set and/or a type of a downlink PDU set. In some embodiments, the type of the uplink PDU set and the type of the downlink PDU set may be indicated by the same indication information, or the type of the uplink PDU set and the type of the downlink PDU set may be indicated by different indication information.

In some embodiments, the third indication information may be used to indicate a type of each PDU set. In other embodiments, the third indication information may be used to indicate a type of PDU set corresponding to the data stream. In other embodiments, the third indication information may be used to indicate a type of PDU set corresponding to the DRB. The type of the PDU set corresponding to the DRB may be determined based on the type of the PDU set corresponding to the data stream and the correspondence between the data stream and the DRB. In other embodiments, the third indication information may be used to indicate a type of PDU set corresponding to the first protocol entity. The type of the PDU set corresponding to the first protocol entity may be determined based on the type of the PDU set corresponding to the data stream and the correspondence between the data stream and the first protocol entity. The first protocol entity may be, for example, a PDCP entity.

If the type of the PDU set corresponding to the data stream is determined by the application layer of the terminal device, the terminal device may send third indication information to the network device, where the third indication information is used to indicate the type of the PDU set. The third indication information may be used to indicate one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

The carrying manner of the third indication information is not specifically limited in the embodiment of the present application. For example, the third indication information may be carried in RRC signaling. For another example, the third indication information may be carried in the MAC CE. For another example, the third indication information may be carried in a PDCP control PDU.

If the terminal equipment determines the type of the PDU set corresponding to the uplink DRB and the type of the PDU set corresponding to the downlink DRB, the terminal equipment sends third indication information to the network equipment, wherein the third indication information can be used for indicating the type of the PDU set corresponding to the uplink DRB, or the third indication information can be used for indicating the type of the PDU set corresponding to the downlink DRB, or the third indication information can be used for simultaneously indicating the type of the PDU set corresponding to the uplink DRB and the type of the PDU set corresponding to the downlink DRB.

If the terminal equipment determines the type of the PDU set corresponding to the uplink first protocol entity and the type of the PDU set corresponding to the downlink first protocol entity, the terminal equipment sends third indication information to the network equipment, wherein the third indication information can be used for indicating the type of the PDU set corresponding to the uplink first protocol entity, or the third indication information can be used for indicating the type of the PDU set corresponding to the downlink first protocol entity, or the third indication information can be used for simultaneously indicating the type of the PDU set corresponding to the uplink first protocol entity and the type of the PDU set corresponding to the downlink first protocol entity.

In some embodiments, if the type of PDU set corresponding to the data stream is determined by the application server, the application server may indicate the type of PDU set corresponding to the data stream to the network device. For example, the application server may send third indication information to the network device, where the third indication information is used to indicate a type of PDU set corresponding to the data stream.

The methods described below apply to both the schemes shown in fig. 6 and 7.

There are various ways of determining the type of the PDU set corresponding to the DRB according to the type of the PDU set corresponding to the data stream. Three processing modes are described below.

In the first mode, if all PDU sets corresponding to the first DRB belong to the first type, or if all PDU sets corresponding to all data flows in the first DRB belong to the first type, the first indication information is used to indicate that the type of the PDU set corresponding to the first DRB is the first type.

In the second mode, if all PDU sets corresponding to the first DRB belong to the second type, or if all PDU sets corresponding to all data flows in the first DRB belong to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first DRB is the second type.

In a third mode, if the partial PDU set corresponding to the first DRB belongs to the first type, the partial PDU set belongs to the second type, or if the PDU set corresponding to the partial data stream in the first DRB belongs to the first type, the PDU set corresponding to the partial data stream belongs to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first DRB includes the first type and the second type, or the third indication information is used for indicating that the type of the PDU set corresponding to the first DRB includes the first type and the second type.

In some embodiments, if the type of the PDU set corresponding to the first DRB is determined by the network device and the type of the PDU set corresponding to the first DRB includes the first type and the second type, the network device may not transmit the first indication information to the terminal device. If the terminal device does not receive the first indication information sent by the network device, the terminal device may determine that the type of the PDU set corresponding to the current DRB includes a first type and a second type.

In some embodiments, if the type of the PDU set corresponding to the first DRB is determined by the terminal device and the type of the PDU set corresponding to the first DRB includes the first type and the second type, the terminal device may not send the third indication information to the network device. If the network device does not receive the third indication information sent by the terminal device, the network device may determine that the type of the PDU set corresponding to the current DRB includes a first type and a second type.

There are various ways of determining the type of the PDU set corresponding to the first protocol entity according to the type of the PDU set corresponding to the data stream. Three processing modes are described below.

In the first mode, if all PDU sets corresponding to the first protocol entity belong to the first type, or if all PDU sets corresponding to all data flows in the first protocol entity belong to the first type, the first indication information is used to indicate that the type of the PDU set corresponding to the first protocol entity is the first type.

In the second mode, if all PDU sets corresponding to the first protocol entity belong to the second type, or if all PDU sets corresponding to all data flows in the first protocol entity belong to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first protocol entity is the second type.

In a third mode, if the partial PDU set corresponding to the first protocol entity belongs to the first type, the partial PDU set belongs to the second type, or if the PDU set corresponding to the partial data stream in the first protocol entity belongs to the first type, the first indication information is used for indicating that the type of the PDU set corresponding to the first protocol entity includes the first type and the second type, or the third indication information is used for indicating that the type of the PDU set corresponding to the first protocol entity includes the first type and the second type.

In some embodiments, if the type of the PDU set corresponding to the first protocol entity is determined by the network device and the type of the PDU set corresponding to the first protocol entity includes the first type and the second type, the network device may not send the first indication information to the terminal device. If the terminal device does not receive the first indication information sent by the network device, the terminal device may determine that the type of the PDU set corresponding to the current first protocol entity includes a first type and a second type.

In some embodiments, if the type of the PDU set corresponding to the first protocol entity is determined by the terminal device and the type of the PDU set corresponding to the first protocol entity includes the first type and the second type, the terminal device may not send the third indication information to the network device. If the network device does not receive the third indication information sent by the terminal device, the network device may determine that the type of the PDU set corresponding to the current first protocol entity includes a first type and a second type.

The following describes in detail the scheme for indicating the type of PDU set according to the embodiment of the present application with reference to fig. 8 to 10.

Example one

Fig. 8 shows a scheme in which the type of PDU set is indicated by an application server. The application server may indicate to the terminal device via control signaling a data stream and/or a DRB and/or a type of PDU set transmitted by the first protocol entity.

In step S810, the application server indicates to the SMF the type of PDU set corresponding to the data flow. The type of the PDU set corresponding to the data stream may be type a or type B.

The application server transmitting the indication information to the SMF may refer to the application server transmitting the indication information to the SMF through the AF.

Since the application server provides the data stream, not the DRB and/or the first protocol entity, the application server can only indicate the type of the PDU set corresponding to the data stream, but cannot indicate the type of the PDU set corresponding to the DRB and/or the type of the PDU set corresponding to the first protocol entity. The indication means that the multiple PDU sets transmitted by one data stream all belong to the same type, i.e. type a or type B.

In some embodiments, before step S810, step S802 may be further included, and the application server may negotiate a type of PDU set corresponding to the data flow with the UE access layer. For example, the UE access layer indicates to the application server the type of PDU set corresponding to the upstream. The type of the PDU set corresponding to the downstream may be autonomously determined by the application server, and thus the application server may obtain the type of the PDU set corresponding to the upstream and the type of the PDU set corresponding to the downstream.

In step S820, the SMF indicates the type of PDU set corresponding to the data stream to the base station.

Similar to the manner in which the application server sends the indication to the SMF, the SMF can only indicate to the base station the type of the PDU set corresponding to the data flow, not the type of the PDU set corresponding to the DRB and/or the type of the PDU set corresponding to the first protocol entity.

In step S830, after receiving the indication from the SMF, the base station may determine the type of the PDU set corresponding to the DRB according to the correspondence between the data stream and the DRB and the types of the PDU sets corresponding to the multiple data streams in one DRB. Or, the base station may determine the type of the PDU set corresponding to the first protocol entity according to the correspondence between the data streams and the first protocol entity and the types of the PDU sets corresponding to the multiple data streams in one first protocol entity.

A scheme of determining the type of PDU set corresponding to the DRB is described below. Specifically, the following three cases may be included:

in case one, if the PDU sets of all data flows in one DRB belong to type a, the base station may notify the UE that "the type of the PDU set corresponding to the DRB is type a".

In case two, if the PDU sets of all the data flows in one DRB belong to type B, the base station may notify "the type of the PDU set corresponding to the DRB is type B" to the UE.

In the third case, if, among the multiple data flows in one DRB, some PDU sets corresponding to the data flows belong to type a and some PDU sets corresponding to the data flows belong to type B, the base station may notify the UE that the types of PDU sets corresponding to the DRB are type a and type B. Alternatively, the base station may not notify the UE of the type of PDU set corresponding to the current DRB. If the base station does not notify the UE of the type of the PDU set corresponding to the DRB, the UE may consider the type of the PDU set corresponding to the DRB as a and B.

A scheme for determining the type of the PDU set corresponding to the first protocol entity is described below. Specifically, the following three cases may be included:

in case one, if the PDU sets of all the data flows in one first protocol entity belong to type a, the base station may notify the UE that "the type of the PDU set corresponding to the first protocol entity is type a".

In case two, if the PDU sets of all the data flows in one first protocol entity belong to type B, the base station may notify the UE that "the type of the PDU set corresponding to the first protocol entity is type B".

In the third case, if, among the multiple data flows in one first protocol entity, some PDU sets corresponding to the data flows belong to type a and some PDU sets corresponding to the data flows belong to type B, the base station may notify the UE that the types of PDU sets corresponding to the first protocol entity are type a and type B. Alternatively, the base station may not notify the UE of the type of the PDU set corresponding to the current first protocol entity. If the base station does not notify the UE of the type of the PDU set corresponding to the first protocol entity, the UE may consider the type of the PDU set corresponding to the first protocol entity to be a and B.

In step S840, the base station may indicate the type of PDU set to the UE (or access layer of the UE). For example, the base station may indicate to the UE the type of PDU set corresponding to the data flow, or the base station may indicate to the UE the type of PDU set corresponding to the DRB, or the base station may indicate to the UE the type of PDU set corresponding to the first protocol entity.

In the flow shown in fig. 8, the type of PDU set indicated in each step may be for only upstream, only downstream, or both.

After receiving the indication from the SMF, the base station may determine the type of the PDU set corresponding to the uplink DRB and the type of the PDU set corresponding to the downlink DRB, respectively. After determining the type of the PDU set corresponding to the uplink DRB and the type of the PDU set corresponding to the downlink DRB, the base station may only indicate the type of the PDU set corresponding to the uplink DRB to the UE, or may only indicate the type of the PDU set corresponding to the downlink DRB to the UE, or may indicate the type of the PDU set corresponding to the uplink DRB and the type of the PDU set corresponding to the downlink DRB to the UE at the same time.

After receiving the indication from the SMF, the base station may determine the type of the PDU set corresponding to the uplink first protocol entity and the type of the PDU set corresponding to the downlink first protocol entity, respectively. After determining the type of the PDU set corresponding to the uplink first protocol entity and the type of the PDU set corresponding to the downlink first protocol entity, the base station may only indicate the type of the PDU set corresponding to the uplink first protocol entity to the UE, or may only indicate the type of the PDU set corresponding to the downlink first protocol entity to the UE, or may indicate the type of the PDU set corresponding to the uplink first protocol entity and the type of the PDU set corresponding to the downlink first protocol entity to the UE at the same time.

In the scheme shown in fig. 8, the application server may indicate, to other devices, the type of the PDU set corresponding to the upstream and/or the type of the PDU set corresponding to the downstream.

Example two

Fig. 9 shows a scheme in which the type of PDU set is indicated by the UE side. The UE may indicate to the network device, via control signaling, a data flow and/or a DRB and/or a type of PDU set transmitted by the first protocol entity.

In step S902, the UE application layer may negotiate a type of PDU set corresponding to the data stream with the application server. For example, the application server may indicate to the UE application layer the type of PDU set corresponding to the downstream. The type of the PDU set corresponding to the uplink data stream may be autonomously determined by the terminal device, and thus the terminal device may obtain the type of the PDU set corresponding to the uplink data stream and the type of the PDU set corresponding to the downlink data stream.

In step S904, a service is established between the application server and the SMF. The service may be, for example, XR service.

In step S906, a service is established between the SMF and the base station. The service may be, for example, XR service.

In step S908, the base station determines a correspondence between the data stream and the DRB and/or a correspondence between the data stream and the first protocol entity.

In step S910, the base station transmits configuration information to the UE access stratum, where the configuration information may be used to configure one or more of the following: the method comprises the steps of corresponding relation between data flow and DRB, current data flow, current DRB, corresponding relation between data flow and first protocol entity, and current first protocol entity.

In step S912, the UE access stratum transmits a request message to the UE application stratum to request the type of PDU set. The type of PDU set may include one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity. In some embodiments, the request message may further carry one or more of a current data flow, a current DRB, a correspondence between data flows and DRBs, a correspondence between data flows and first protocol entities, and a current first protocol entity.

After the UE application layer receives the request from the UE access layer, the type of the PDU set corresponding to the current data stream may be determined according to the current data stream. If the request message carries the corresponding relation between the data stream and the DRB, the UE application layer can determine the type of the PDU set corresponding to the DRB. If the request message carries the corresponding relation between the data stream and the first protocol entity, the UE application layer can determine the type of the PDU set corresponding to the first protocol entity.

The type of the PDU set corresponding to the DRB and/or the first protocol entity determined by the UE application layer may be the same as that of example one, and for brevity, will not be described herein.

In step S914, the UE application layer indicates to the UE access layer one or more of the following: the type of the PDU set corresponding to the current data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

If the UE application layer indicates to the UE access layer the type of the PDU set corresponding to the current data flow, the UE access layer may determine the type of the PDU set corresponding to the current DRB according to the type of the PDU set corresponding to the current data flow and the correspondence between the data flow and the DRB, or the UE access layer may determine the type of the PDU set corresponding to the current first protocol entity according to the type of the PDU set corresponding to the current data flow and the correspondence between the data flow and the first protocol entity.

The type of the PDU set corresponding to the DRB and/or the first protocol entity determined by the UE access layer may be the same as that of example one, and for brevity, will not be described herein.

In step S916, the UE access stratum indicates to the network device one or more of: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

The UE access layer may indicate to the base station, through RRC signaling, one or more of a type of a PDU set corresponding to the data flow, a type of a PDU set corresponding to the DRB, and a type of a PDU set corresponding to the first protocol entity, or the UE access layer may indicate to the base station, through MAC CE, one or more of a type of a PDU set corresponding to the data flow, a type of a PDU set corresponding to the DRB, and a type of a PDU set corresponding to the first protocol entity, or the UE access layer may indicate to the base station, through PDCP control PDU, one or more of a type of a PDU set corresponding to the data flow, a type of a PDU set corresponding to the DRB, and a type of a PDU set corresponding to the first protocol entity.

In some embodiments, when the UE indicates the type of PDU set to the base station, the first condition described above, such as condition 1A-14A and/or 1B-14B corresponding to uplink data and/or condition 1A-14A and/or 1B-14B corresponding to downlink data, may also be indicated to the base station. After receiving the indication from the terminal device, the base station can determine the scheduling policy of the downlink data according to the condition corresponding to the downlink data, or determine the data size of the UE to be transmitted according to the condition corresponding to the uplink data, so as to perform reasonable scheduling for the UE.

In the scheme shown in fig. 9, the UE application layer may indicate to the UE access layer or the network device the type of the PDU set corresponding to the uplink data stream and/or the type of the PDU set corresponding to the downlink data stream.

Example three

Fig. 10 shows a scheme in which the UE side indicates the type of the uplink PDU set and the application server indicates the type of the downlink PDU set. In general, the type of PDU set depends on the algorithm of the video encoder, and thus the type of downlink PDU set can be determined by the application server, and the UE side determines the type of uplink PDU set. Details not described in detail in fig. 10 can be seen from the description of fig. 8 and 9 above.

Referring to fig. 10, in step S1002, a service is established between an application server and an SMF. The application server indicates to the SMF the type of PDU set corresponding to the downstream.

In step S1004, traffic establishment is performed between the SMF and the base station. The SMF indicates to the base station the type of PDU set corresponding to the downstream.

In step S1006, the base station determines a correspondence between the data stream and the DRB and/or a correspondence between the data stream and the first protocol entity.

In step S1008, the base station transmits configuration information to the UE application layer, the configuration information being usable to configure one or more of: the method comprises the steps of corresponding relation between data flow and DRB, current data flow, current DRB, corresponding relation between data flow and first protocol entity, and current first protocol entity. In addition, the base station may further indicate to the UE application layer one or more of a type of a PDU set corresponding to the downlink data stream, a type of a PDU set corresponding to the downlink DRB, and a type of a PDU set corresponding to the downlink first protocol entity.

In some embodiments, the base station may determine the type of the PDU set corresponding to the downlink DRB according to the type of the PDU set corresponding to the downlink data stream and the correspondence between the data stream and the DRB. In some embodiments, the base station may determine the type of the PDU set corresponding to the downlink first protocol entity according to the type of the PDU set corresponding to the downlink data stream and the correspondence between the data stream and the first protocol entity. For a specific determination, reference may be made to the scheme described in fig. 8 above.

In step S1010, the UE access stratum transmits a request message to the UE application stratum to request the type of the uplink PDU set. The type of the set of uplink PDUs may include one or more of the following: the type of the PDU set corresponding to the uplink data stream, the type of the PDU set corresponding to the uplink DRB and the type of the PDU set corresponding to the uplink first protocol entity. In some embodiments, the request message may further carry one or more of an uplink data stream, an uplink DRB, a correspondence between an uplink data stream and an uplink DRB, an uplink first protocol entity, and a correspondence between an uplink data stream and an uplink first protocol entity.

After the UE application layer receives the request from the UE access layer, the type of the PDU set corresponding to the uplink data stream may be determined according to the uplink data stream. If the request message carries the corresponding relation between the uplink data stream and the uplink DRB, the UE application layer can determine the type of the PDU set corresponding to the uplink DRB. If the request message carries the corresponding relation between the uplink data stream and the uplink first protocol entity, the UE application layer can determine the type of the PDU set corresponding to the uplink first protocol entity.

The type of determining, by the UE application layer, the PDU set corresponding to the uplink DRB and/or the uplink first protocol entity may be the same as that of example one, and for brevity, will not be described herein again.

In step S1012, the UE application layer indicates to the UE access layer one or more of the following: the type of the PDU set corresponding to the uplink data stream, the type of the PDU set corresponding to the uplink DRB and the type of the PDU set corresponding to the uplink first protocol entity.

If the UE application layer indicates to the UE access layer the type of the PDU set corresponding to the uplink data stream, the UE access layer may determine the type of the PDU set corresponding to the uplink DRB according to the type of the PDU set corresponding to the uplink data stream and the correspondence between the uplink data stream and the uplink DRB, or the UE access layer may determine the type of the PDU set corresponding to the uplink first protocol entity according to the type of the PDU set corresponding to the uplink data stream and the correspondence between the uplink data stream and the uplink first protocol entity.

The type of determining, by the UE access layer, the PDU set corresponding to the uplink DRB and/or the uplink first protocol entity may be the same as that of example one, and for brevity, will not be described herein again.

In step S1014, the UE access stratum indicates to the network device one or more of: the type of the PDU set corresponding to the uplink data stream, the type of the PDU set corresponding to the uplink DRB and the type of the PDU set corresponding to the uplink first protocol entity.

The UE access layer may indicate to the base station, through RRC signaling, one or more of a type of a PDU set corresponding to an uplink data stream, a type of a PDU set corresponding to an uplink DRB, and a type of a PDU set corresponding to an uplink first protocol entity, or the UE access layer may indicate to the base station, through MAC CE, one or more of a type of a PDU set corresponding to an uplink data stream, a type of a PDU set corresponding to an uplink DRB, and a type of a PDU set corresponding to an uplink first protocol entity, or the UE access layer may indicate to the base station, through PDCP control PDUs, one or more of a type of a PDU set corresponding to an uplink data stream, a type of a PDU set corresponding to an uplink DRB, and a type of a PDU set corresponding to an uplink first protocol entity.

In some embodiments, when the UE indicates the type of the uplink PDU set to the base station, the first condition described above, such as the condition 1A-14A and/or 1B-14B corresponding to the uplink data, and/or the condition 1A-14A and/or 1B-14B corresponding to the downlink data, may also be indicated to the base station. After receiving the indication from the terminal device, the base station can determine the scheduling policy of the downlink data according to the condition corresponding to the downlink data, or determine the data size of the UE to be transmitted according to the condition corresponding to the uplink data, so as to perform reasonable scheduling for the UE.

In some embodiments, if the types of the multiple PDU sets corresponding to one data stream are the same, the indication may be performed in the manner of signaling described above. However, there is also a case where the types of the plurality of PDU sets corresponding to one data stream are different, and in this case, the types of the PDU sets may be indicated by a user plane message. That is, the first indication information may be carried in the user plane message.

In some embodiments, the first indication information may be carried in a control PDU. The control PDU may be an independent control PDU that is independent of the data PDU in the PDU set. The control PDU may be located at any one of a set of PDUs. For example, the control PDU may precede the first PDU in the PDU set. For another example, the control PDU may be located after the last PDU in the PDU set. For another example, a control PDU can be located between any two PDUs in a PDU set.

In some embodiments, the control PDU may be a PDCP control PDU. For example, the first indication information may be carried in PDCP control PDUs between the base station and the terminal device.

In some embodiments, the first indication information may be carried in a data PDU. The data PDU may be any one or more data PDUs in a PDU set. For example, the first indication information may be carried in a first data PDU in the PDU set. For another example, the first indication information may be carried in the last data PDU in the PDU set. For another example, the first indication information may be carried in any one of the data PDUs in the PDU set.

In some embodiments, the first indication information may be carried within a header of the data PDU.

For downlink transmission, the first indication information may be transmitted to the terminal device through an application server, a UPF, and a base station. Alternatively, the first indication information may be transmitted to the access layer of the terminal device through an application server, a UPF, and a base station. The access layer of the terminal device may determine whether to transmit the first indication information to the application layer of the terminal device according to one or more of UE implementation, requirements of a decoder, and requirements of the application layer.

For uplink transmission, the first indication information may be transmitted to the base station through the terminal device, or the first indication information may be transmitted to the base station through an application layer of the terminal device and an access layer of the terminal device. The base station may determine whether to transmit the first indication information to the UPF according to its implementation and/or the requirements of the application server. The UPF may determine whether to transmit the first indication information to the application server according to a requirement of the application server.

In some embodiments, the first indication information may be carried in the same manner or may be carried differently between different entities. For example, the first indication information is carried in the control PDU between the entities, and the first indication is carried in the data PDU between the entities. For another example, although the first indication information is carried in the data PDU between all entities, the location of the data PDU carrying the first indication information may be different between different entities.

In this process, the entities involved may include an application server, a UPF, a base station, an access layer of a terminal device, and an application layer of the terminal device. The following is an example.

For downlink transmission, the first indication information is sent out from the application server, and then reaches the base station through UPF. The base station may or may not send the first indication information to the terminal device. If the base station transmits the first indication information to the terminal device, the base station may modify the format of the first indication information. Since the protocol stacks of the base station and the terminal device are different from those between the base station and the UPF, the base station may modify the format of the first indication information. For example, the base station may generate a PDCP control PDU that carries the first indication information. In some embodiments, the base station may also carry the first indication information in a PDCP header of one or more data packets of the PDU set.

For uplink transmission, the first indication information is transmitted to an access layer of the terminal equipment after being sent out from an application layer of the terminal equipment. The terminal device may send the first indication information to the base station through the PDCP control PDU.

In some embodiments, each set of PDUs may carry first indication information to indicate the type of the corresponding set of PDUs. In other embodiments, the type of the PDU set may be indicated by the first indication information only when the type of the PDU set is changed. If the type of the PDU set does not change, the PDU set may not carry the first indication information, which may reduce signaling overhead. That is, the type of the PDU set in which the type is changed among the plurality of PDU sets is indicated by the first indication information.

The above indication may be applied to transmissions between any two entities, and the above indication may be applied to one or more of the following: application server-UPF, UPF-base station, base station-UE access layer, UE access layer-UE application layer.

For uplink transmission and/or downlink transmission, the adopted indication modes can be the same or different among different entities. For example, each set of PDUs carries first indication information between different entities. For another example, the PDU set may carry the first indication information only when the type of the PDU set is changed between different entities. For another example, there are entities, each PDU set carrying the first indication information, and there are entities, each carrying the first indication information only when the type of PDU set changes. That is, the indication manner adopted by the different entities can be independent from each other.

For example, between the application server and the UPF, the PDU set may carry the first indication information only when the type of the PDU set is changed, and the PDU set may not carry the first indication information if the type of the PDU set is not changed. For the case of between the UPF and the base station, it may be changed that each PDU set carries the first indication information. In this case, the UPF needs to regenerate the indication information, and cannot transparently transmit the indication from the application server.

The manner in which the type of PDU set is indicated by the user plane is described in detail below in connection with fig. 11.

Example four

Referring to fig. 11, a dotted line indicates signaling transmission, and a solid line indicates data transmission. The grid rectangle represents a downstream packet, the dot rectangle represents an upstream packet, and the left-slash rectangle represents the indication information of the PDU set type. The dashed rectangle indicates that the indication information is optional, i.e. the PDU set may or may not carry the indication information.

The indication information may be carried in a control PDU or in a data PDU. If the indication information is carried in a control PDU, the control PDU may be a separate control PDU independent of other data PDUs. The control PDU may be located before the first packet of the PDU set, after the last packet of the PDU set, or between any two packets of the PDU set.

If the indication information is carried in a data PDU, the data PDU may be any one or more data packets in a PDU set. The indication information may be carried in the header of the data packet.

Steps S1102 to S1108 are similar to steps S904 to S910 shown in fig. 9.

In step S1102, a service is established between the application server and the SMF. The service may be, for example, XR service.

In step S1104, a service is established between the SMF and the base station. The service may be, for example, XR service.

In step S1106, the base station determines a correspondence between data streams and DRBs.

In step S1108, the base station transmits configuration information to the UE access stratum, which may be used to configure one or more of the following:

the corresponding relation between the data flow and the DRB, the current data flow and the current DRB.

In step S1110, the application server transmits a downlink PDU set to the UPF. The set of downlink PDUs may include a plurality of data packets. The set of downlink PDUs may carry indication information to indicate the type of the set of downlink PDUs.

The UPF transmits the set of downlink PDUs to the base station in step S1112.

In step S1114, the base station transmits the downlink PDU set to the UE access stratum. The downlink PDU set may or may not carry the indication information.

In some embodiments, the base station may modify the format of the indication information, e.g., the base station may generate a PDCP control PDU and indicate the type of the downlink PDU set to the UE access layer via the PDCP control PDU.

In some embodiments, the base station may also carry indication information in the PDCP header of one or more data packets of the PDU set to indicate the type of the downlink PDU set.

In step S1116, if the base station indicates the type of the downlink PDU set to the UE access stratum, the UE access stratum may determine whether to send the indication information to the UE application stratum according to the requirements of a decoder (e.g., a video decoder), or the implementation of the UE, or the requirements of the UE application stratum.

The transmission of the downlink PDU set is described above and the transmission of the uplink PDU set is described below.

In step S1118, the UE application layer transmits the set of uplink PDUs to the UE access layer. The set of downlink PDUs may include a plurality of data packets. The set of downlink PDUs may carry indication information to indicate the type of the set of downlink PDUs.

In step S1120, the UE access stratum transmits the set of uplink PDUs to the base station. The uplink PDU set may or may not carry the indication information. The UE access layer may determine whether to send indication information to the base station according to a configuration of the base station, or an implementation of the UE.

In some embodiments, the UE access stratum may send indication information to the base station via PDCP control PDUs. In other embodiments, the UE access stratum may send the indication information to the base station via PDCP headers of one or more data packets of the PDU set.

In step S1122, the base station transmits the uplink PDU set to the UPF. The uplink PDU set may or may not carry indication information. The base station can determine whether to carry the indication information in the uplink PDU set according to the implementation of the base station or the requirement of an application server.

In step S1124, the UPF sends the set of upstream PDUs to the application server. The uplink PDU set may or may not carry indication information. The UPF may determine, according to the requirements of the application server, whether the uplink PDU set carries the indication information.

In the scheme shown in fig. 11, the type may be indicated for each PDU set. In some embodiments, the type of the set of PDUs may also be indicated when the type of the set of PDUs changes. If the type of the PDU set does not change, the type of the PDU set may not be indicated. This indication may be applied to each segment of transmission shown in fig. 11, such as any one or more segments of transmission in an application server-UPF, UPF-base station, base station-UE access layer, UE access layer-UE application layer.

For uplink transmission and/or downlink transmission, the same indication mode may be used to indicate the type of the PDU set in each transmission segment, or different indication modes may be used to indicate the type of the PDU set in the transmission of different transmission segments.

For example, each segment transmission may employ an indication that "each PDU set indicates its type", or each segment transmission may employ an indication that "the PDU set indicates its type when its type changes".

For another example, the indication manner used for the transmission of the different segments may be independent of each other. For example, for transmission between an application server-UPF, the type of PDU set is indicated only when the type of PDU set is changed, and may not be indicated if the type of PDU set is not changed. For transmission between the UPF-base stations, the type may be indicated for each PDU set. In this case, the UPF needs to regenerate the indication information, and cannot transparently transmit the indication information from the application server.

Method embodiments of the present application are described above in detail in connection with fig. 1-11, and apparatus embodiments of the present application are described below in detail in connection with fig. 12-16. It is to be understood that the description of the method embodiments corresponds to the description of the device embodiments, and that parts not described in detail can therefore be seen in the preceding method embodiments.

Fig. 12 is a schematic block diagram of a receiving device provided in an embodiment of the present application. The receiving device may be any of the receiving devices described above. The receiving device 1200 may be a terminal device or a network device. The receiving device may include a determining unit 1210.

A determining unit 1210 is configured to determine a first transmission policy, where the first transmission policy is used to determine whether a first protocol layer submits a data packet in a first PDU set to an upper layer, and the first transmission policy is related to a type of the first PDU set.

In some embodiments, the first transmission policy includes one or more of: the first protocol layer submits the successfully received data packet to an upper layer; the first protocol layer does not submit the successfully received data packet to the upper layer; and determining whether the first protocol layer submits the successfully received data packet to an upper layer according to a first condition.

In some embodiments, the first condition is associated with a first data packet comprising data packets in the first set of PDUs that have been successfully received and/or data packets that have not been successfully received.

In some embodiments, the first condition relates to one or more of the following information: the number of the first data packets; the number of bits of the first data packet; the number of the first data packets is a proportion of the total number of the data packets in the first PDU set; the bit number of the first data packet is the proportion of the total bit number of the data packets in the first PDU set; the first data packet is located in the first PDU set.

In some embodiments, the location of the first data packet in the first set of PDUs includes a location continuity of the first data packet in the first set of PDUs.

In some embodiments, the first condition includes one or more of: the number of data packets in the first PDU set that have been successfully received is greater than or equal to a first threshold; the number of unsuccessfully received data packets in the first PDU set is less than or equal to a second threshold; the bit number of the data packet which is successfully received in the first PDU set is greater than or equal to a third threshold value; the bit number of the data packet which is not successfully received in the first PDU set is smaller than or equal to a fourth threshold value; the number of the data packets which are successfully received in the first PDU set is larger than or equal to a fifth threshold value, wherein the proportion of the number of the data packets in the first PDU set is equal to the total number of the data packets in the first PDU set; the number of the unsuccessfully received data packets in the first PDU set is smaller than or equal to a sixth threshold value, wherein the proportion of the number of the unsuccessfully received data packets in the first PDU set is equal to the total number of the data packets in the first PDU set; the data packet bits which are successfully received in the first PDU set occupy the proportion of the total data packet bits in the first PDU set and are larger than or equal to a seventh threshold value; the unsuccessfully received data packet bits in the first PDU set account for the proportion of the total data packet bits in the first PDU set, and are smaller than or equal to an eighth threshold; the number of consecutive data packets in the first set of PDUs that have been successfully received is greater than or equal to a ninth threshold; the number of the data packets which are not successfully received in the first PDU set and are continuous in position is smaller than or equal to a tenth threshold value; the number of bits of the continuous data packets of the position which are successfully received in the first PDU set is greater than or equal to an eleventh threshold; the number of bits of the data packets which are not successfully received and are continuous in position in the first PDU set is smaller than or equal to a twelfth threshold value; the positions of the data packets which are successfully received in the first PDU set are continuous; the unsuccessfully received data packets in the first PDU set are contiguous in location.

In some embodiments, the receiving device further comprises a processing unit for: under the condition that the first condition is met, successfully received data packets are submitted to an upper layer through the first protocol layer; and/or, under the condition that the first condition is not met, not submitting the successfully received data packet to an upper layer through the first protocol layer.

In some embodiments, the first transmission strategy is different if the type of the first set of PDUs is different.

Fig. 13 is a schematic block diagram of a transmitting apparatus provided in an embodiment of the present application. The transmitting device may be any of the transmitting devices described above. The transmitting device 1300 may be a terminal device or a network device. The transmitting device may include a determining unit 1310.

A determining unit 1310, configured to determine a second transmission policy, where the second transmission policy is used to determine a transmission manner of a data packet in a second PDU set to be transmitted to a receiving device, and the second transmission policy is related to a type of the second PDU set.

In some embodiments, the second transmission policy is related to one or more of the following information: transmission resources of the data packet; a delay budget range for the data packet; the second PDU integrates the conditions of the power transmission.

In some embodiments, the second transmission policy is related to a TB used for transmitting data packets and/or a BLER of the transmission resources.

In some embodiments, if the type of the second set of PDUs is the first type, the second transmission policy is related to one or more of the following: a TB for transmitting data packets; -BLER of the transmission resource; delay budget range for packets.

In some embodiments, if the type of the second set of PDUs is the first type, the second transmission policy includes one or more of the following: a plurality of data packets belonging to the same PDU set are transmitted through the same TB; a plurality of data packets belonging to the same PDU set are transmitted through transmission resources with the same BLER; if the transmitting device expects that the transmission of the remaining data packets in the second PDU set cannot be completed within the range of the delay budget, discarding the transmission of the remaining one or more data packets; and if the partial data packet in the second PDU set is successfully transmitted and the partial data packet is not successfully transmitted, transmitting the data packet which is not successfully transmitted by using the transmission resource of the first BLER, wherein the first BLER is smaller than or equal to the BLER of the transmission resource used for transmitting the data packet last time.

In some embodiments, if the type of the second set of PDUs is a second type, the second transmission policy is related to one or more of the following: a delay budget range for the data packet; the second PDU integrates the conditions of the power transmission.

In some embodiments, if the type of the second set of PDUs is a second type, the second transmission policy comprises: if the transmitting device expects that the transmission of the remaining data packets in the second PDU set cannot be completed within the range of the delay budget, continuing to transmit the remaining data packets; or if the transmitting device expects that the transmission of the remaining data packets in the second PDU set cannot be completed within the range of the delay budget, determining whether to discard the transmission of the remaining data packet or data packets according to the condition of the integrated power transmission of the first PDU.

Fig. 14 is a schematic block diagram of a terminal device provided in an embodiment of the present application. The terminal device may be any of the terminal devices described above. The terminal device 1400 may include a receiving unit 1410.

A receiving unit 1410, configured to receive first indication information, where the first indication information is used to indicate a type of a PDU set; the first indication information is sent to the terminal equipment by an application server; and/or the first indication information is sent to an access layer of the terminal equipment by an application layer of the terminal equipment; and/or the first indication information is sent to the terminal equipment by the network equipment.

In some embodiments, the first indication information is used to indicate a type of a PDU set corresponding to a DRB, where the type of the PDU set corresponding to the DRB is determined based on a type of the PDU set corresponding to a data stream and a correspondence between the data stream and the DRB.

In some embodiments, the type of the PDU set corresponding to the data stream is determined by an application layer of the terminal device and/or the application server.

In some embodiments, if the type of the PDU set corresponding to the data stream is determined by an application layer of the terminal device, the terminal device further includes: and the sending unit is used for sending second indicating information to the network equipment, wherein the second indicating information is used for indicating the type of the PDU set corresponding to the data flow and/or the type of the PDU set corresponding to the DRB.

In some embodiments, if the type of the PDU set corresponding to the data stream is determined by the application server, the receiving unit is configured to: and receiving the first indication information sent by the network equipment, wherein the first indication information is used for indicating the type of the PDU set corresponding to the data flow and/or the type of the PDU set corresponding to the DRB, and the type of the PDU set corresponding to the data flow is indicated to the network equipment by the application server.

In some embodiments, the type of PDU set corresponding to the DRB is determined by one or more of: network equipment, an application layer of terminal equipment and an access layer of terminal equipment.

In some embodiments, if all PDU sets corresponding to a first DRB belong to a first type, the first indication information is used to indicate that the type of the PDU set corresponding to the first DRB is the first type; or if all the PDU sets corresponding to the first DRB belong to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first DRB is the second type; or if the partial PDU set corresponding to the first DRB belongs to the first type and the partial PDU set belongs to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first DRB comprises the first type and the second type.

In some embodiments, the first indication information is carried in a user plane message.

In some embodiments, the first indication information is carried in one or more of: control PDU, data PDU.

In some embodiments, the first indication information is carried within a header of the data PDU.

In some embodiments, the type of each PDU set in the plurality of PDU sets is indicated by the first indication information, or the type of the PDU set with the changed type in the plurality of PDU sets is indicated by the first indication information.

In some embodiments, the PDU sets include an uplink PDU set and a downlink PDU set, the type of the uplink PDU set being determined by an application layer of the terminal device and/or the type of the downlink PDU set being determined by the application server.

Fig. 15 is a schematic block diagram of a network device provided in an embodiment of the present application. The network device may be any of the network devices described above. The network device 1500 may include a receiving unit 1510.

A receiving unit 1510 configured to receive third indication information, where the third indication information is used to indicate a type of a PDU set; wherein the third indication information is sent to the network device by an application server; and/or the third indication information is sent to the network device by the terminal device.

In some embodiments, the third indication information is used to indicate a type of a PDU set corresponding to the DRB, where the type of the PDU set corresponding to the DRB is determined based on a type of the PDU set corresponding to the data stream and a correspondence between the data stream and the DRB.

In some embodiments, if the type of the PDU set corresponding to the data stream is determined by an application layer of the terminal device, the receiving unit is further configured to: and receiving the third indication information sent by the terminal equipment, wherein the third indication information is used for indicating the type of the PDU set corresponding to the data flow and/or the type of the PDU set corresponding to the DRB.

In some embodiments, if the type of the PDU set corresponding to the data stream is determined by the application server, the receiving unit is further configured to: and receiving the third indication information sent by the application server, wherein the third indication information is used for indicating the type of the PDU set corresponding to the data stream.

In some embodiments, if all PDU sets corresponding to the first DRB belong to a first type, the third indication information is used to indicate that the type of the PDU set corresponding to the first DRB is the first type; or if all the PDU sets corresponding to the first DRB belong to the second type, the third indication information is used for indicating that the type of the PDU set corresponding to the first DRB is the second type; or if the type of the PDU set corresponding to the first DRB comprises a first type and a second type, the third indication information is used for indicating that the type of the PDU set corresponding to the first DRB comprises the first type and the second type.

In some embodiments, the third indication information is carried in a user plane message.

In some embodiments, the third indication information is carried in one or more of: control PDU, data PDU within PDU set.

In some embodiments, the third indication information is carried within a header of the data PDU.

In some embodiments, the type of each PDU set in the plurality of PDU sets is indicated by the third indication information, or the type of the PDU set with the changed type in the plurality of PDU sets is indicated by the third indication information.

Fig. 16 is a schematic structural diagram of a communication device of an embodiment of the present application. The dashed lines in fig. 16 indicate that the unit or module is optional. The apparatus 1600 may be used to implement the methods described in the method embodiments described above. Apparatus 1600 may be a chip, a terminal device, or a network device.

The apparatus 1600 may include one or more processors 1610. The processor 1610 may support the apparatus 1600 to implement the methods described in the method embodiments above. The processor 1610 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (central processing unit, CPU). Alternatively, the processor may be another general purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The apparatus 1600 may also include one or more memories 1620. The memory 1620 has stored thereon a program that can be executed by the processor 1610, so that the processor 1610 performs the method described in the foregoing method embodiments. The memory 1620 may be separate from the processor 1610 or may be integrated into the processor 1610.

The apparatus 1600 may also include a transceiver 1630. Processor 1610 may communicate with other devices or chips through transceiver 1630. For example, processor 1610 may transceive data with other devices or chips via transceiver 1630.

The embodiment of the application also provides a computer readable storage medium for storing a program. The computer-readable storage medium may be applied to a terminal or a network device provided in the embodiments of the present application, and the program causes a computer to execute the method performed by the terminal or the network device in the embodiments of the present application.

Embodiments of the present application also provide a computer program product. The computer program product includes a program. The computer program product may be applied to a terminal or a network device provided in embodiments of the present application, and the program causes a computer to perform the methods performed by the terminal or the network device in the embodiments of the present application.

The embodiment of the application also provides a computer program. The computer program may be applied to a terminal or a network device provided in embodiments of the present application, and cause a computer to perform the methods performed by the terminal or the network device in the embodiments of the present application.

It should be understood that the terms "system" and "network" may be used interchangeably in this application. In addition, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiment of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the embodiment of the present application, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

In the embodiment of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, or the like.

In the embodiment of the present application, the "pre-defining" or "pre-configuring" may be implemented by pre-storing a corresponding code, a table or other manners that may be used to indicate relevant information in a device (including, for example, a terminal device and a network device), and the specific implementation manner is not limited in this application. Such as predefined may refer to what is defined in the protocol.

In this embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in this application.

In the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, which indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In various embodiments of the present application, the sequence number of each process does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disk (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, comprising:

the receiving device determines a first transmission policy, where the first transmission policy is used to determine whether a first protocol layer delivers data packets in a first set of protocol data units, PDUs, to an upper layer, where the first transmission policy is related to a type of the first set of PDUs.

2. The method of claim 1, wherein the first transmission policy comprises one or more of:

the first protocol layer submits the successfully received data packet to an upper layer;

the first protocol layer does not submit the successfully received data packet to the upper layer;

determining whether the first protocol layer submits the successfully received data packet to an upper layer according to a first condition;

after submitting part of the data packets in the first PDU set to an upper layer through the first protocol layer, indicating whether to delete other data packets in the first PDU set to a lower layer;

And after submitting part of the data packets in the first PDU set to an upper layer through the first protocol layer, whether other data packets in the first PDU set are submitted to the upper layer or not.

3. The method according to claim 2, wherein the first condition relates to a first data packet comprising data packets in the first set of PDUs that have been successfully received and/or data packets that have not been successfully received.

4. A method according to claim 3, wherein the first condition relates to one or more of the following information:

the number of the first data packets;

the number of bits of the first data packet;

the number of the first data packets is a proportion of the total number of the data packets in the first PDU set;

the bit number of the first data packet is the proportion of the total bit number of the data packets in the first PDU set;

the first data packet is located in the first PDU set.

5. The method of claim 4, wherein the location of the first data packet in the first set of PDUs comprises a continuity of the location of the first data packet in the first set of PDUs.

6. The method of claim 5, wherein the first condition comprises one or more of:

The number of data packets in the first PDU set that have been successfully received is greater than or equal to a first threshold;

the number of unsuccessfully received data packets in the first PDU set is less than or equal to a second threshold;

the bit number of the data packet which is successfully received in the first PDU set is greater than or equal to a third threshold value;

the bit number of the data packet which is not successfully received in the first PDU set is smaller than or equal to a fourth threshold value;

the number of the data packets which are successfully received in the first PDU set is larger than or equal to a fifth threshold value, wherein the proportion of the number of the data packets in the first PDU set is equal to the total number of the data packets in the first PDU set;

the number of the unsuccessfully received data packets in the first PDU set is smaller than or equal to a sixth threshold value, wherein the proportion of the number of the unsuccessfully received data packets in the first PDU set is equal to the total number of the data packets in the first PDU set;

the data packet bits which are successfully received in the first PDU set occupy the proportion of the total data packet bits in the first PDU set and are larger than or equal to a seventh threshold value;

the unsuccessfully received data packet bits in the first PDU set account for the proportion of the total data packet bits in the first PDU set, and are smaller than or equal to an eighth threshold;

the number of consecutive data packets in the first set of PDUs that have been successfully received is greater than or equal to a ninth threshold;

The number of the data packets which are not successfully received in the first PDU set and are continuous in position is smaller than or equal to a tenth threshold value;

the number of bits of the continuous data packets of the position which are successfully received in the first PDU set is greater than or equal to an eleventh threshold;

the number of bits of the data packets which are not successfully received and are continuous in position in the first PDU set is smaller than or equal to a twelfth threshold value;

the positions of the data packets which are successfully received in the first PDU set are continuous;

the unsuccessfully received data packets in the first PDU set are contiguous in location.

7. The method according to any one of claims 2-6, further comprising:

the receiving equipment submits the successfully received data packet to an upper layer through the first protocol layer under the condition that the first condition is met; and/or the number of the groups of groups,

and under the condition that the first condition is not met, the receiving equipment does not submit the successfully received data packet to an upper layer through the first protocol layer and/or delete the successfully received data packet.

8. The method according to any of claims 1-7, wherein the first transmission strategy is different if the type of the first set of PDUs is different.

9. A method of wireless communication, comprising:

the sending device determines a second transmission policy, where the second transmission policy is used to determine a transmission manner in which data packets in a second set of protocol data units PDU are transmitted to the receiving device, and the second transmission policy is related to a type of the second set of PDUs.

10. The method of claim 9, wherein the second transmission policy is related to one or more of the following information:

transmission resources of the data packet;

a delay budget range for the data packet;

the second PDU integrates the conditions of the power transmission.

11. Method according to claim 10, characterized in that the second transmission strategy is related to a transport block TB for transmitting data packets and/or a block error rate BLER of the transmission resources.

12. The method of claim 11, wherein if the type of the second set of PDUs is a first type, the second transmission policy is related to one or more of the following:

a TB for transmitting data packets;

-BLER of the transmission resource;

delay budget range for packets.

13. The method of claim 12, wherein if the type of the second set of PDUs is a first type, the second transmission policy comprises one or more of the following:

A plurality of data packets belonging to the same PDU set are transmitted through the same transmission TB;

a plurality of data packets belonging to the same PDU set are transmitted through transmission resources with the same BLER;

if the transmitting device expects that the transmission of the remaining data packets in the second PDU set cannot be completed within the range of the delay budget, discarding the transmission of the remaining one or more data packets;

and if the partial data packet in the second PDU set is successfully transmitted and the partial data packet is not successfully transmitted, transmitting the data packet which is not successfully transmitted by using the transmission resource of the first BLER, wherein the first BLER is smaller than or equal to the BLER of the transmission resource used for transmitting the data packet last time.

14. The method of claim 10, wherein if the type of the second set of PDUs is a second type, the second transmission policy is related to one or more of the following:

a delay budget range for the data packet;

the second PDU integrates the conditions of the power transmission.

15. The method of claim 14, wherein if the type of the second set of PDUs is a second type, the second transmission policy comprises:

if the transmitting device expects that the transmission of the remaining data packets in the second PDU set cannot be completed within the range of the delay budget, continuing to transmit the remaining data packets; or (b)

If the transmitting device expects that the transmission of the remaining data packets in the second set of PDUs cannot be completed within the range of the delay budget, determining whether to discard the transmission of the remaining data packet or packets according to the condition of the first PDU integrated power transmission.

16. A method of wireless communication, comprising:

the terminal equipment receives first indication information, wherein the first indication information is used for indicating the type of a protocol data unit PDU set;

the first indication information is sent to the terminal equipment by an application server; and/or

The first indication information is sent to an access layer of the terminal equipment by an application layer of the terminal equipment; and/or

The first indication information is sent to the terminal equipment by the network equipment.

17. The method of claim 16 wherein the first indication information is used to indicate a type of PDU set corresponding to a data radio bearer, DRB, the type of PDU set corresponding to a DRB being determined based on a type of PDU set corresponding to a data flow and a correspondence of the data flow to the DRB.

18. The method of claim 16, wherein the first indication information is used to indicate a type of a PDU set corresponding to the first protocol entity, and the type of the PDU set corresponding to the first protocol entity is determined based on a type of the PDU set corresponding to the data stream and a correspondence between the data stream and the first protocol entity.

19. Method according to claim 17 or 18, characterized in that the type of PDU set corresponding to the data stream is determined by the application layer of the terminal device and/or the application server.

20. The method of claim 19, wherein if the type of PDU set for which the data stream corresponds is determined by an application layer of the terminal device, the method further comprises:

the terminal device sends second indication information to the network device, wherein the second indication information is used for indicating one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

21. The method of claim 19, wherein if the type of PDU set for which the data stream corresponds is determined by the application server, the method further comprises:

the terminal equipment receives the first indication information sent by the network equipment, wherein the first indication information is used for indicating one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity are indicated to the network equipment by the application server.

22. The method according to any of claims 17-21, wherein the type of PDU set corresponding to the DRB and/or the type of PDU set corresponding to the first protocol entity is determined by one or more of the following: network equipment, an application layer of terminal equipment and an access layer of terminal equipment.

23. The method according to any one of claims 17-22, wherein if all PDU sets corresponding to a first DRB are of a first type, the first indication information is used to indicate that the type of PDU set corresponding to the first DRB is the first type; or (b)

If all PDU sets corresponding to the first DRB belong to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first DRB is the second type; or (b)

And if the partial PDU set corresponding to the first DRB belongs to the first type and the partial PDU set belongs to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first DRB comprises the first type and the second type.

24. The method according to any of claims 17-22, wherein the first indication information is used to indicate that the type of the PDU set corresponding to the first protocol entity is the first type if all PDU sets corresponding to the first protocol entity are of the first type; or (b)

If all PDU sets corresponding to the first protocol entity belong to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first protocol entity is the second type; or (b)

And if the partial PDU set corresponding to the first protocol entity belongs to the first type and the partial PDU set belongs to the second type, the first indication information is used for indicating that the type of the PDU set corresponding to the first protocol entity comprises the first type and the second type.

25. The method according to any of claims 16-24, wherein the first indication information is carried in a user plane message.

26. The method of claim 25, wherein the first indication information is carried in one or more of: control PDU, data PDU.

27. The method of claim 26, wherein the first indication information is carried within a header of the data PDU.

28. The method according to any of claims 25-27, wherein the type of each of the plurality of PDU sets is indicated by the first indication information or wherein the type of PDU set, the type of which changes, is indicated by the first indication information.

29. The method according to any of claims 16-28, wherein the set of PDUs comprises an uplink set of PDUs and a downlink set of PDUs, the type of the uplink set of PDUs being determined by the application layer of the terminal device and/or the type of the downlink set of PDUs being determined by the application server.

30. A method of wireless communication, comprising:

the network equipment receives third indication information, wherein the third indication information is used for indicating the type of a protocol data unit PDU set;

wherein the third indication information is sent to the network device by an application server; and/or

And the third indication information is sent to the network equipment by the terminal equipment.

31. The method of claim 30 wherein the third indication information is used to indicate a type of PDU set corresponding to a data radio bearer, DRB, the type of PDU set corresponding to a DRB being determined based on a type of PDU set corresponding to a data flow and a correspondence of the data flow to the DRB.

32. The method of claim 30, wherein the third indication information is used to indicate a type of a PDU set corresponding to the first protocol entity, and the type of the PDU set corresponding to the first protocol entity is determined based on a type of the PDU set corresponding to the data stream and a correspondence between the data stream and the first protocol entity.

33. Method according to claim 31 or 32, characterized in that the type of PDU set corresponding to the data stream is determined by the application layer of the terminal device and/or the application server.

34. The method of claim 33, wherein if the type of PDU set for which the data stream corresponds is determined by an application layer of the terminal device, the method further comprises:

the network device receives the third indication information sent by the terminal device, where the third indication information is used to indicate one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

35. The method of claim 33, wherein if the type of PDU set for which the data stream corresponds is determined by the application server, the method further comprises:

and the network equipment receives the third indication information sent by the application server, wherein the third indication information is used for indicating the type of the PDU set corresponding to the data flow.

36. The method according to any of claims 31-35, wherein the type of PDU set corresponding to the DRB and/or the type of PDU set corresponding to the first protocol entity is determined by one or more of the following: network equipment, an application layer of terminal equipment and an access layer of terminal equipment.

37. The method according to any one of claims 31-36, wherein if all PDU sets corresponding to a first DRB are of a first type, the third indication information is used to indicate that the type of PDU set corresponding to the first DRB is the first type; or (b)

If all the PDU sets corresponding to the first DRB belong to the second type, the third indication information is used for indicating that the type of the PDU set corresponding to the first DRB is the second type; or (b)

And if the type of the PDU set corresponding to the first DRB comprises a first type and a second type, the third indication information is used for indicating that the type of the PDU set corresponding to the first DRB comprises the first type and the second type.

38. The method according to any one of claims 31-36, wherein if all PDU sets corresponding to a first protocol entity are of a first type, the first indication information is used to indicate that the type of PDU set corresponding to the first protocol entity is the first type; or (b)

39. The method according to any of claims 30-38, wherein the third indication information is carried in a user plane message.

40. The method of claim 39, wherein the third indication information is carried in one or more of: control PDU, data PDU within PDU set.

41. The method of claim 40, wherein the third indication information is carried in a header of the data PDU.

42. The method according to any one of claims 39-41, wherein the type of each of the plurality of PDU sets is indicated by the third indication information, or wherein the type of the PDU set with the changed type of the plurality of PDU sets is indicated by the third indication information.

43. The method according to any of claims 30-42, wherein the set of PDUs comprises an uplink set of PDUs and a downlink set of PDUs, wherein the type of the uplink set of PDUs is determined by the application layer of the terminal device and/or wherein the type of the downlink set of PDUs is determined by the application server.

44. A receiving apparatus, comprising:

a determining unit, configured to determine a first transmission policy, where the first transmission policy is used to determine whether a first protocol layer submits a data packet in a first PDU set to an upper layer, and the first transmission policy is related to a type of the first PDU set.

45. The receiving device of claim 44, wherein the first transmission policy comprises one or more of:

46. The receiving device of claim 45, wherein the first condition relates to a first data packet comprising data packets in the first set of PDUs that have been successfully received and/or data packets that have not been successfully received.

47. The receiving device of claim 46, wherein the first condition relates to one or more of the following information:

the number of the first data packets;

the number of bits of the first data packet;

the first data packet is located in the first PDU set.

48. The receiving device of claim 47, wherein the location of the first data packet in the first set of PDUs comprises a continuity of the location of the first data packet in the first set of PDUs.

49. The receiving device of claim 48, wherein the first condition comprises one or more of:

50. The receiving device of any one of claims 45-49, further comprising a processing unit to:

under the condition that the first condition is met, successfully received data packets are submitted to an upper layer through the first protocol layer; and/or the number of the groups of groups,

and under the condition that the first condition is not met, not submitting the successfully received data packet to an upper layer through the first protocol layer and/or deleting the successfully received data packet.

51. The receiving device of any of claims 44-50, wherein the first transmission strategy is different if the type of the first set of PDUs is different.

52. A transmitting apparatus, characterized by comprising:

a determining unit, configured to determine a second transmission policy, where the second transmission policy is used to determine a transmission manner in which a data packet in a second PDU set is transmitted to a receiving device, and the second transmission policy is related to a type of the second PDU set.

53. The transmitting device of claim 52, wherein the second transmission policy relates to one or more of the following information:

Transmission resources of the data packet;

a delay budget range for the data packet;

the second PDU integrates the conditions of the power transmission.

54. The transmitting device of claim 53, wherein the second transmission policy relates to a transport block TB for transmitting data packets and/or a block error rate BLER of the transmission resources.

55. The transmitting device of claim 54, wherein if the type of the second set of PDUs is a first type, the second transmission strategy is associated with one or more of:

a TB for transmitting data packets;

-BLER of the transmission resource;

delay budget range for packets.

56. The transmitting device of claim 55, wherein if the type of the second set of PDUs is a first type, the second transmission policy comprises one or more of:

a plurality of data packets belonging to the same PDU set are transmitted through the same TB;

57. The transmitting device of claim 53, wherein if the type of the second set of PDUs is a second type, the second transmission strategy is related to one or more of:

a delay budget range for the data packet;

the second PDU integrates the conditions of the power transmission.

58. The transmitting device of claim 57, wherein if the type of the second set of PDUs is a second type, the second transmission strategy comprises:

59. A terminal device, comprising:

a receiving unit, configured to receive first indication information, where the first indication information is used to indicate a type of a PDU set;

60. The terminal device of claim 59, wherein the first indication information is used for indicating a type of a PDU set corresponding to a DRB of the data radio bearer, and wherein the type of the PDU set corresponding to the DRB is determined based on the type of the PDU set corresponding to the data flow and a correspondence between the data flow and the DRB.

61. The terminal device of claim 59, wherein the first indication information is used for indicating a type of a PDU set corresponding to the first protocol entity, and wherein the type of the PDU set corresponding to the first protocol entity is determined based on a type of the PDU set corresponding to the data stream and a correspondence between the data stream and the first protocol entity.

62. A terminal device according to claim 60 or 61, wherein the type of PDU set corresponding to the data stream is determined by an application layer of the terminal device and/or the application server.

63. The terminal device of claim 62, wherein if the type of the PDU set corresponding to the data stream is determined by an application layer of the terminal device, the terminal device further comprises:

a sending unit, configured to send second indication information to the network device, where the second indication information is used to indicate one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

64. The terminal device of claim 62, wherein if a type of PDU set for the data stream is determined by the application server, the receiving unit is configured to:

receiving the first indication information sent by the network equipment, wherein the first indication information is used for indicating one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity are indicated to the network equipment by the application server.

65. The terminal device according to any of the claims 60-64, wherein the type of PDU set corresponding to the DRB and/or the type of PDU set corresponding to the first protocol entity is determined by one or more of the following: network equipment, an application layer of terminal equipment and an access layer of terminal equipment.

66. The terminal device according to any of claims 60-65, wherein if all PDU sets corresponding to a first DRB are of a first type, the first indication information is used to indicate that the type of PDU set corresponding to the first DRB is the first type; or (b)

67. The terminal device according to any of claims 60-66, wherein if all PDU sets corresponding to a first protocol entity are of a first type, the first indication information is used to indicate that the type of PDU set corresponding to the first protocol entity is the first type; or (b)

68. The terminal device of any of claims 59-67, wherein the first indication information is carried in a user plane message.

69. The terminal device of claim 68, wherein the first indication information is carried in one or more of: control PDU, data PDU.

70. The terminal device of claim 69, wherein the first indication information is carried in a header of the data PDU.

71. The terminal device of any of claims 68-70, wherein a type of each of the plurality of PDU sets is indicated by the first indication information or wherein a type of a PDU set of which a type of the plurality of PDU sets is changed is indicated by the first indication information.

72. The terminal device according to any of the claims 59-71, wherein the PDU set comprises an uplink PDU set and a downlink PDU set, wherein the type of the uplink PDU set is determined by an application layer of the terminal device and/or wherein the type of the downlink PDU set is determined by the application server.

73. A network device, comprising:

a receiving unit, configured to receive third indication information, where the third indication information is used to indicate a type of a PDU set;

74. The network device of claim 73, wherein the third indication information is used to indicate a type of PDU set corresponding to a data radio bearer, DRB, the type of PDU set corresponding to a DRB being determined based on a type of PDU set corresponding to a data flow and a correspondence of the data flow to the DRB.

75. The network device of claim 73, wherein the third indication information is used to indicate a type of a PDU set corresponding to the first protocol entity, the type of the PDU set corresponding to the first protocol entity being determined based on a type of the PDU set corresponding to the data stream and a correspondence of the data stream to the first protocol entity.

76. A network device according to claim 74 or 75, wherein the type of PDU set corresponding to the data stream is determined by an application layer of the terminal device and/or the application server.

77. The network device of claim 76, wherein if the type of PDU set for the data stream is determined by an application layer of the terminal device, the receiving unit is further configured to:

receiving the third indication information sent by the terminal equipment, wherein the third indication information is used for indicating one or more of the following: the type of the PDU set corresponding to the data flow, the type of the PDU set corresponding to the DRB and the type of the PDU set corresponding to the first protocol entity.

78. The network device of claim 76, wherein if the type of PDU set for which the data stream corresponds is determined by the application server, the receiving unit is further configured to:

and receiving the third indication information sent by the application server, wherein the third indication information is used for indicating the type of the PDU set corresponding to the data stream.

79. The network device of any one of claims 74-78, wherein the type of PDU set corresponding to the DRB and/or the type of PDU set corresponding to the first protocol entity is determined by one or more of: network equipment, an application layer of terminal equipment and an access layer of terminal equipment.

80. The network device of any one of claims 74-79, wherein if all PDU sets corresponding to a first DRB are of a first type, the third indication information is configured to indicate that the type of PDU set corresponding to the first DRB is the first type; or (b)

81. The network device of any one of claims 74-79, wherein if all PDU sets corresponding to a first protocol entity are of a first type, the first indication information is used to indicate that the type of PDU set corresponding to the first protocol entity is the first type; or (b)

82. The network device of any of claims 73-81, wherein the third indication information is carried in a user plane message.

83. The network device of claim 82, wherein the third indication information is carried in one or more of: control PDU, data PDU within PDU set.

84. The network device of claim 83, wherein the third indication information is carried within a header of the data PDU.

85. The network device of any one of claims 82-84, wherein a type of each of the plurality of PDU sets is indicated by the third indication information, or wherein a type of the PDU set with a changed type of the plurality of PDU sets is indicated by the third indication information.

86. The network device of any of claims 73-85, wherein the set of PDUs comprises an uplink set of PDUs and a downlink set of PDUs, wherein the type of uplink set of PDUs is determined by the application layer of the terminal device and/or wherein the type of downlink set of PDUs is determined by the application server.

87. An apparatus for wireless communication, comprising: a memory for storing a program and a processor for invoking the program in the memory to cause the apparatus to perform the method of any of claims 1-8, 9-15, 16-29, 30-43.

88. An apparatus comprising a processor to invoke a program from a memory to cause the apparatus to perform the method of any of claims 1-8, 9-15, 16-29, 30-43.