WO2024198499A1 - Information indication method, device and storage medium - Google Patents

Abstract

Provided in the embodiments of the present application are an information indication method, a device and a storage medium. The method comprises: when determining that there is data of a first data stream that is discarded, a first node acquires a discarded data volume of the first data stream; and if it is determined that the discarded data volume of the first data stream is greater than a first threshold, the first node indicates at least one of discarding of the first data stream, information of the discarded data volume of the first data stream, or information of a cached data volume of the first data stream, so as to trigger the first node to report a cache update to a second node, thereby avoiding the situation of a cache previously reported by the first node having an error due to data discarding.

Description

Information indication method, device and storage medium

This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on March 31, 2023, with application number 202310379972.5 and application name “Information Indication Method, Device and Storage Medium”, all contents of which are incorporated by reference in this application.

Technical Field

The present application relates to the field of communication technology, and in particular to an information indication method, device and storage medium.

Background Art

In new radio (NR) systems, terminal devices usually cache uplink data flows in packet data convergence protocol (PDCP) entities and radio link control (RLC) entities. If data in the uplink data flow is discarded and the terminal device has reported the amount of cached data to the network before the data is discarded, the network may allocate an excess amount of resources to the terminal device.

Since the amount of cache data reported by the terminal device is usually an interval value, it is not the case that as long as there is data discarded, the previously reported amount of cache data will be incorrect. In view of this, how to avoid cache reporting errors caused by data discard is a problem that needs to be solved urgently.

Summary of the invention

The embodiments of the present application provide an information indication method, device and storage medium to avoid errors in reported data cache due to data discard.

In a first aspect, an embodiment of the present application proposes an information indication method, which is applied to a first node of wireless communication, and the method includes: obtaining the amount of discarded data of a first data stream; when the amount of discarded data of the first data stream is greater than a first threshold, indicating at least one of first indication information, the amount of discarded data of the first data stream, or the amount of cached data of the first data stream; wherein the first indication information is used to indicate that the first data stream is discarded.

In an optional embodiment of the first aspect of the present application, obtaining the amount of discarded data of the first data stream includes: obtaining the amount of discarded data of the first data stream within a preset time length.

In an optional embodiment of the first aspect of the present application, the method further includes: when it is determined that data is discarded in the first data stream, starting a timer.

In an optional embodiment of the first aspect of the present application, obtaining the amount of discarded data of the first data stream within the preset time length includes: when a timer times out, obtaining the amount of discarded data of the first data stream within the preset time length.

In an optional embodiment of the first aspect of the present application, obtaining the amount of discarded data of the first data stream includes at least one of the following: a packet data convergence protocol PDCP entity of the first node obtains the amount of discarded data of the second data stream; a radio link layer control protocol RLC entity of the first node obtains the amount of discarded data of the third data stream; a media access control MAC entity of the first node obtains the amount of discarded data of the first data stream.

In an optional embodiment of the first aspect of the present application, the amount of discarded data of the first data stream includes at least one of the amount of discarded data of the second data stream and the amount of discarded data of the third data stream; the amount of discarded data of the second data stream includes at least one of the following data contents: the discarded PDCP service data unit SDU of the second data stream; the discarded The PDCP protocol data unit PDU to be transmitted of the second data stream; the discarded PDCP PDU to be retransmitted of the second data stream; the discarded data amount of the third data stream includes at least one of the following data contents: the discarded RLC SDU and RLC SDU segments of the third data stream; the discarded RLC PDU to be transmitted of the third data stream; the discarded RLC PDU to be retransmitted of the third data stream.

In an optional embodiment of the first aspect of the present application, indicating at least one item of first indication information, discarded data volume information of the first data stream, or cached data volume information of the first data stream includes: the PDCP entity of the first node indicates at least one item of the first indication information, discarded data volume information of the first data stream, or cached data volume information of the first data stream to the MAC entity of the first node.

In an optional embodiment of the first aspect of the present application, indicating at least one item of first indication information, discarded data amount information of the first data stream, or cached data amount information of the first data stream includes: the PDCP entity of the first node indicates at least one item of the first indication information, discarded data amount information of the first data stream, or cached data amount information of the first data stream to the RLC entity of the first node.

In an optional embodiment of the first aspect of the present application, the first data stream includes a second data stream, and the PDCP entity of the first node indicates at least one item of first indication information, discarded data amount information of the first data stream, or cached data amount information of the first data stream to the RLC entity of the first node, including: when the discarded data amount of the second data stream is greater than the first threshold, the PDCP entity indicates at least one item of the first indication information, discarded data amount information of the first data stream, or cached data amount information of the first data stream to the RLC entity.

In an optional embodiment of the first aspect of the present application, the first data stream includes a second data stream, and the PDCP entity of the first node indicates at least one item of first indication information, discarded data volume information of the first data stream, or cached data volume information of the first data stream to the RLC entity of the first node, including: when the discarded data volume of the second data stream is less than or equal to the first threshold, the PDCP entity indicates the discarded data volume information of the second data stream to the RLC entity.

In an optional embodiment of the first aspect of the present application, indicating at least one item of first indication information, discarded data amount information of the first data stream, or cached data amount information of the first data stream includes: the RLC entity of the first node indicates at least one item of the first indication information, discarded data amount information of the first data stream, or cached data amount information of the first data stream to the MAC entity of the first node.

In an optional embodiment of the first aspect of the present application, the RLC entity determines the RLC entity to which the first data stream is transmitted for the PDCP entity, and data is discarded in the first data stream; the MAC entity is a MAC entity associated with the RLC entity.

In an optional embodiment of the first aspect of the present application, indicating at least one item of first indication information, discarded data volume information of the first data stream, or cached data volume information of the first data stream includes: the MAC entity of the first node indicates at least one item of the first indication information, discarded data volume information of the first data stream, or cached data volume information of the first data stream to the second node.

In an optional embodiment of the first aspect of the present application, the first threshold is configured by the second node; or, the first threshold is determined by the first node according to a cache interval of a cache status report BSR.

In an optional embodiment of the first aspect of the present application, the method also includes: receiving first information from a second node, the first information including at least one of the following information: whether to obtain the amount of discarded data of the first data stream; whether to indicate the first indication information; whether to indicate the amount of discarded data of the first data stream; whether to indicate the cached data amount information of the first data stream.

In an optional embodiment of the first aspect of the present application, the first information further includes at least one of the following: the first threshold; the length of the timer.

In the second aspect, an embodiment of the present application proposes an information indication method, which is applied to a second node of wireless communication, and the method includes: sending first information, wherein the first information includes at least one of the following information: whether to obtain the amount of discarded data of the first data stream; whether to indicate first indication information; whether to indicate the amount of discarded data of the first data stream; whether to indicate the cached data amount information of the first data stream.

In an optional embodiment of the second aspect of the present application, the first information further includes at least one of the following: a first threshold; a length of a timer.

In a third aspect, an embodiment of the present application provides a terminal device, comprising: an acquisition module, used to obtain the amount of discarded data of a first data stream; a processing module, used to indicate at least one of first indication information, discarded data amount information of the first data stream, or cached data amount information of the first data stream when the amount of discarded data of the first data stream is greater than a first threshold; wherein the first indication information is used to indicate that the first data stream is discarded.

In an optional embodiment of the third aspect of the present application, the acquisition module is used to obtain the amount of discarded data of the first data flow within a preset time period.

In an optional embodiment of the third aspect of the present application, the processing module is used to start a timer when it is determined that data is discarded in the first data stream.

In an optional embodiment of the third aspect of the present application, the acquisition module is used to acquire the amount of discarded data of the first data flow within the preset time period when the timer times out.

In an optional embodiment of the third aspect of the present application, obtaining the amount of discarded data of the first data stream includes at least one of the following: a packet data convergence protocol PDCP entity of the terminal device obtains the amount of discarded data of the second data stream; a radio link layer control protocol RLC entity of the terminal device obtains the amount of discarded data of the third data stream; a media access control MAC entity of the terminal device obtains the amount of discarded data of the first data stream.

In an optional embodiment of the third aspect of the present application, the amount of discarded data of the first data stream includes at least one of the amount of discarded data of the second data stream and the amount of discarded data of the third data stream; the amount of discarded data of the second data stream includes at least one of the following data contents: discarded PDCP service data unit SDU of the second data stream; discarded PDCP protocol data unit PDU to be transmitted of the second data stream; discarded PDCP PDU to be retransmitted of the second data stream; the amount of discarded data of the third data stream includes at least one of the following data contents: discarded RLC SDU and RLC SDU segments of the third data stream; discarded RLC PDU to be transmitted of the third data stream; discarded RLC PDU to be retransmitted of the third data stream.

In an optional embodiment of the third aspect of the present application, the processing module is used to indicate at least one item of first indication information, discarded data volume information of the first data stream, or cached data volume information of the first data stream to the MAC entity of the terminal device through the PDCP entity of the terminal device.

In an optional embodiment of the third aspect of the present application, the processing module is used to indicate at least one item of first indication information, discarded data volume information of the first data stream, or cached data volume information of the first data stream to the RLC entity of the terminal device through the PDCP entity of the terminal device.

In an optional embodiment of the third aspect of the present application, the first data stream includes a second data stream, and the processing module is used to indicate at least one of first indication information, discarded data amount information of the first data stream, or cached data amount information of the first data stream to the RLC entity through the PDCP entity when the amount of discarded data of the second data stream is greater than the first threshold.

In an optional embodiment of the third aspect of the present application, the first data stream includes a second data stream, and the processing module is used to indicate the discarded data amount information of the second data stream to the RLC entity through the PDCP entity when the discarded data amount of the second data stream is less than or equal to the first threshold.

In an optional embodiment of the third aspect of the present application, the processing module is used to indicate at least one item of first indication information, discarded data volume information of the first data stream, or cached data volume information of the first data stream to the MAC entity of the terminal device through the RLC entity of the terminal device.

In an optional embodiment of the third aspect of the present application, the RLC entity determines the RLC entity to which the first data stream is transmitted for the PDCP entity, and data is discarded in the first data stream; the MAC entity is a MAC entity associated with the RLC entity.

In an optional embodiment of the third aspect of the present application, the processing module is used to indicate at least one item of the first indication information, the discarded data volume information of the first data flow, or the cached data volume information of the first data flow to the network device through the MAC entity of the terminal device.

In an optional embodiment of the third aspect of the present application, the first threshold is configured by a network device; or, the first threshold is determined by the terminal device according to a cache interval of a cache status report BSR.

In an optional embodiment of the third aspect of the present application, the acquisition module is used to receive first information from a network device, and the first information includes at least one of the following information: whether to obtain the amount of discarded data of the first data stream; whether to indicate the first indication information; whether to indicate the amount of discarded data of the first data stream; whether to indicate the cached data amount information of the first data stream.

In an optional embodiment of the third aspect of the present application, the first information further includes at least one of the following: the first threshold; the length of the timer.

In a fourth aspect, an embodiment of the present application provides a network device, including: a sending module, used to send first information, the first information including at least one of the following information: whether to obtain the amount of discarded data of the first data stream; whether to indicate first indication information; whether to indicate the amount of discarded data of the first data stream; whether to indicate the cached data amount information of the first data stream.

In an optional embodiment of the fourth aspect of the present application, the first information also includes at least one of the following: a first threshold; a length of a timer.

In the fifth aspect, an embodiment of the present application provides a terminal device, comprising: a processor and a memory; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory, so that the terminal device executes the method described in any one of the first aspects of the present application.

In a sixth aspect, an embodiment of the present application provides a network device, comprising: a processor and a memory; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory, so that the network device executes the method as described in any one of the second aspects of the present application.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the first aspects of the present application is implemented.

In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the second aspects of the present application is implemented.

In a ninth aspect, an embodiment of the present application provides a computer program product, including a computer program. When the program is executed, the computer is caused to execute the method as described in any one of the first aspects of the present application.

In a tenth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed, enables a computer to execute a method as described in any one of the second aspects of the present application.

An embodiment of the present application provides an information indication method, device and storage medium, wherein the information indication method includes: when the first node determines that data has been discarded in the first data stream, obtaining the amount of discarded data of the first data stream; if it is determined that the amount of discarded data of the first data stream is greater than a first threshold, the first node triggers the first node to report a cache update to the second node by indicating at least one of the discard of the first data stream, information on the amount of discarded data of the first data stream, or information on the amount of cached data of the first data stream, so as to avoid a situation in which errors exist in the cache previously reported by the first node due to data discard.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a diagram of a communication system architecture provided in an embodiment of the present application;

FIG2 is a diagram of a protocol stack architecture in a communication system provided in an embodiment of the present application;

FIG3 is a flow chart of an information indication method according to an embodiment of the present application;

FIG4 is a second flow chart of the information indication method provided in an embodiment of the present application;

FIG5 is a third flow chart of the information indication method provided in an embodiment of the present application;

FIG6 is a fourth flow chart of the information indication method provided in an embodiment of the present application;

FIG7 is a flowchart diagram 5 of the information indication method provided in an embodiment of the present application;

FIG8 is a schematic diagram of the connection of internal entities of a first node provided in an embodiment of the present application;

FIG9 is a sixth flow chart of the information indication method provided in an embodiment of the present application;

FIG10 is a flow chart of the seventh information indication method provided in an embodiment of the present application;

FIG11 is a flowchart of an information indication method according to an embodiment of the present application;

FIG12 is a schematic diagram of the working principle of a timer provided in an embodiment of the present application;

FIG13 is a flowchart diagram 9 of the information indication method provided in an embodiment of the present application;

FIG14 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

FIG15 is a schematic diagram of the structure of a network device provided in an embodiment of the present application;

FIG16 is a schematic diagram of the hardware structure of a terminal device provided in an embodiment of the present application;

FIG17 is a schematic diagram of the hardware structure of the network device provided in an embodiment of the present application.

DETAILED DESCRIPTION

In order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

In the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more. "And/or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple.

It should be noted that the “when…” in the embodiments of the present application can be the instant when a certain situation occurs, or It may be a period of time after a certain situation occurs, and the embodiment of the present application does not specifically limit this. In addition, the display interface provided in the embodiment of the present application is only used as an example, and the display interface may also include more or less content.

In order to better understand the information indication method provided by the embodiment of the present application, the communication system architecture of the embodiment of the present application is first described below.

Exemplarily, FIG1 is a communication system architecture diagram provided in an embodiment of the present application. As shown in FIG1 , the communication system 100 includes a terminal device 101 and a network device 102, and the terminal device 101 communicates wirelessly with the network device 102. In the embodiment of the present application, when the terminal device 101 transmits data to the network device 102, the data to be transmitted can be stored in a buffer, and an uplink wireless resource can be applied for by reporting a data buffer status report (buffer status report, BSR) to the network device 102. The terminal device 101 transmits data according to the uplink wireless resource allocated to it by the network device 102.

The terminal device involved in the embodiment of the present application can also be called a terminal, which can be a device with wireless transceiver function, which can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.). The terminal device can be a user equipment (UE), wherein the UE includes a handheld device, a vehicle-mounted device, a wearable device or a computing device with a wireless communication function. Exemplarily, the UE can be a mobile phone, a tablet computer or a computer with a wireless transceiver function. The terminal device can also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. In the embodiment of the present application, the device for realizing the function of the terminal can be a terminal; it can also be a device that can support the terminal to realize the function, such as a chip system, which can be installed in the terminal.

The network devices involved in the embodiments of the present application include access network devices or core network devices. For example, the network device shown in Figure 1 is an access network device, such as a base station.

Access network equipment is the intermediate equipment that terminals use to access core network equipment wirelessly. It is mainly responsible for wireless resource management, quality of service (QoS) management, data compression and encryption, etc. on the air interface side. For example: base station NodeB, evolved base station eNodeB, base station in 5G mobile communication system or new generation wireless (new radio, NR) communication system, base station in future mobile communication system, etc.

The core network equipment includes user plane function (UPF) network elements, access and mobility management function (AMF) network elements, session management function (SMF) network elements, policy control function (PCF) network elements, etc. Among them, the UPF network element is mainly responsible for the transmission of user data, and other network elements can be called control plane function network elements, which are mainly responsible for authentication, authorization, registration management, session management, mobility management and policy control, etc., to ensure reliable and stable transmission of user data.

In an embodiment of the present application, the device for implementing the function of the network device may be a network device, or may be a device that can support the network device to implement the function, such as a chip system, which may be installed in the network device.

The technical solution provided in the embodiments of the present application can be applied to the Long Term Evolution (LTE) architecture, and can also be applied to the Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN) architecture, or the Global System for Mobile Communication (GSM)/Enhanced Data Rate for GSM Evolution (EDGE) system radio access network (GSM EDGE Radio Access Network, GERAN) architecture. In addition, the technical solution provided in the embodiments of the present application can also be applied to any other wireless communication system with similar structure and function, such as the Public Land Mobile Network (PLMN) The present invention does not impose any limitation on the embodiments of the present invention.

Wireless communication between communication devices may include: wireless communication between network devices and terminals, wireless communication between network devices and network devices, and wireless communication between terminals and terminals. In the embodiments of the present application, the term "wireless communication" may also be referred to as "communication", and the term "communication" may also be described as "data transmission", "information transmission" or "transmission". Those skilled in the art may use the technical solution provided in the embodiments of the present application for wireless communication between network devices and terminals, such as wireless communication between access network devices and terminals, and wireless communication between core network devices and terminals.

Figure 2 is a diagram of a protocol stack architecture in a communication system provided in an embodiment of the present application. As shown in Figure 2, the protocol stack architecture includes: a service data adaptation (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a media access control (MAC) layer. The data stream from the application layer is processed by the SDAP layer, the PDCP layer, the RLC layer, the MAC layer, and the physical layer in turn, and is sent to the corresponding layer of the receiving device at the air interface. In the embodiment of the present application, the PDCP layer, the RLC layer, and the MAC layer are mainly involved.

Rel-18XR introduces the concept of protocol data unit set (PDU set). A PDU set usually includes multiple PDUs, such as PDU1, PDU2 and PDU3. The data size of a PDU set ranges from a few Mbits to hundreds of Mbits. For the NR system, the terminal device will cache data at the PDCP layer and the RLC layer. If the PDU set is discarded, the amount of cached data of the terminal device will change significantly. Possible reasons for the PDU set discard include, for example, one or more PDUs in the PDU set no longer meet the delay requirements or decoding requirements.

If the terminal device has reported the amount of cached data before the PDU set is discarded and is waiting for the network device to allocate uplink resources for it, it is possible that the terminal device has reported an excess amount of cache. In this case, the network device may allocate uplink resources with an excess amount of cache, resulting in a waste of network resources, an increase in the burden on the network side, and a deterioration in the condition of the entire communication link.

Specifically, the terminal device can apply for uplink resources by reporting the BSR or the remaining delay of data transmission to the network device. Taking BSR as an example, the BSR reported by the terminal device carries an index value, and an index value indicates a cache data volume interval (cache interval). The network device obtains the cache interval of the terminal device according to the index value carried in the BSR, and allocates uplink resources to the terminal device according to the cache interval. It can be seen that the cache data volume reported by the terminal device to the network device is a cache interval, not an exact cache value.

When a PDU set is discarded, the terminal device may discard several PDU sets at the same time, or the data volume of the PDU sets may be different. Therefore, not all discarded PDU sets will cause BSR reporting errors. Therefore, the embodiment of the present application proposes an information indication method to solve the situation where the above-mentioned PDU set discard causes BSR reporting errors. The inventive idea of the scheme is as follows: Considering that the cache data reported by the terminal device is a cache interval, a first threshold for the amount of discarded data can be configured. When data is discarded, the terminal device determines whether the amount of discarded data is greater than the first threshold. If the amount of discarded data is greater than the first threshold, it means that the amount of cached data of the terminal device has changed significantly, then there is a large error in the cache interval previously reported by the terminal device. If the terminal device does not receive a resource indication at this time, it can update the reported cache interval to the network device, thereby avoiding the network side configuring an excess number of resources for the terminal device due to data discard.

It should be noted that the above-mentioned discarding of the PDU set can also be described as discarding of the data stream, or discarding of the data packet, or discarding of the data set. The following embodiments take the discarding of the data stream as an example to illustrate the solution.

The technical solutions shown in this application are described in detail below through specific embodiments. The embodiments may exist separately or in combination with each other. For the same or similar contents, such as explanations of terms or nouns, and explanations of steps, etc., in different embodiments, reference may be made to each other and no repetition is given.

FIG3 is a flow chart of an information indication method provided in an embodiment of the present application. As shown in FIG3 , the information indication method of this embodiment is applied to a first node of wireless communication, and the first node may be the terminal device shown in FIG1 . The information indication method includes:

S301: Obtain the amount of discarded data of a first data stream.

In one example, the first data stream includes one or more data streams, and the first data stream may be a QoS stream, or a data burst stream, or a PDU set, etc., or the first data stream is uplink data, and the uplink data includes multiple data packets (service data unit SDU or protocol data unit PDU), which is not limited to this embodiment of the present application.

In one example, when the first node determines that data in the first data flow is discarded, the first node obtains the amount of discarded data in the first data flow.

In one example, the discarded data amount may be a difference in the amount of cached data.

In this embodiment, the first data stream includes at least one of the second data stream and the third data stream.

The second data stream may be a data stream of the PDCP layer of the first node, including a data stream successfully transmitted by the PDCP layer of the first node (i.e., all data in the data stream has been successfully transmitted), and a data stream not yet successfully transmitted by the PDCP layer of the first node (i.e., at least one data in the data stream has not been successfully transmitted). The data stream not yet successfully transmitted by the PDCP layer of the first node includes data units that need to be discarded in the second data stream.

In one example, the second data stream includes one or more data streams, and the second data stream can be a QoS stream, or a data burst stream, or a PDU set, etc., or the second data stream is uplink data, and the uplink data includes multiple data packets (SDU or PDU), which is not limited to this embodiment of the present application.

The data units to be discarded in the second data stream include at least one of the following:

The discarded PDCP SDUs (data units not assembled into PDCP PDUs) of the second data stream;

The discarded PDCP PDUs to be transmitted of the second data stream (data units not transmitted to the RLC layer);

The discarded PDCP PDU to be retransmitted (data unit transmitted to the RLC layer but needs to be retransmitted) of the second data stream.

The third data stream may be a data stream of the RLC layer of the first node, including a data stream successfully transmitted by the RLC layer of the first node (i.e., all data in the data stream has been successfully transmitted), and a data stream not yet successfully transmitted by the RLC layer of the first node (i.e., at least one data in the data stream has not been successfully transmitted). The data stream not yet successfully transmitted by the RLC layer of the first node includes data units that need to be discarded in the third data stream.

In one example, the third data stream includes one or more data streams, and the third data stream can be a QoS stream, or a data burst stream, or a PDU set, etc., or the third data stream is uplink data, and the uplink data includes multiple data packets (SDU or PDU), which is not limited to this embodiment of the present application.

The data units to be discarded in the third data stream include at least one of the following:

The RLC SDUs and RLC SDU segments (data units not assembled into RLC PDUs) of the third data stream are discarded;

The discarded RLC PDUs to be transmitted of the third data stream (data units not transmitted to the MAC layer);

The discarded RLC PDU to be retransmitted (data unit transmitted to the MAC layer but needs to be retransmitted) of the third data stream.

In this embodiment, the discarded data amount information of the first data stream includes the discarded data amount of the first data stream, wherein the discarded data amount of the first data stream includes at least one of the discarded data amount of the second data stream and the discarded data amount of the third data stream.

In a possible example, the amount of discarded data of the first data flow is the amount of discarded data of the second data flow.

In a possible example, the amount of discarded data of the first data flow is the amount of discarded data of the third data flow.

In a possible example, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream and the amount of discarded data of the third data stream, and the amount of discarded data of the first data stream is the total amount of discarded data of the second data stream and the third data stream.

The discarded data amount of the second data stream includes at least one of the following data contents:

The PDCP SDU of the second data stream is discarded;

the discarded PDCP PDUs to be transmitted of the second data stream;

The discarded PDCP PDU to be retransmitted of the second data stream.

The discarded data amount of the third data stream includes at least one of the following data contents:

the discarded RLC SDUs and RLC SDU segments of the third data stream;

The RLC PDU to be transmitted of the third data stream is discarded;

The discarded RLC PDU to be retransmitted of the third data stream.

S302: When the amount of discarded data of the first data stream is greater than a first threshold, indicate at least one of the following: first indication information and/or information on the amount of discarded data of the first data stream; or information on the amount of cached data of the first data stream.

The first indication information is used to indicate that the first data stream is discarded.

In this embodiment, the cache data volume information of the first data stream includes the cache data volume of the first data stream, and the cache data volume of the first data stream is the cache data volume after data discard occurs in the first data stream. Optionally, the cache data volume of the first data stream includes at least one of the cache data volume of the second data stream and the cache data volume of the third data stream. The cache data volume of the second data stream is the cache data volume after data discard occurs in the second data stream, and the cache data volume of the third data stream is the cache data volume after data discard occurs in the third data stream.

In this embodiment, the configuration of the first threshold includes the following two methods:

In an optional implementation, the first threshold may be configured by the second node. For example, the first node receives first information from the second node, and the first information includes the first threshold. The first threshold may be determined by the second node according to network load conditions.

In an optional implementation manner, the first threshold is determined by the first node, and in one implementation manner, is determined according to a cache interval of the BSR.

Exemplarily, the first threshold may be a difference between a maximum cache value and a minimum cache value in a cache interval of the BSR. For example, if the cache interval is [5M, 10M], the first threshold may be configured as 5M (10M-5M).

It can be understood that if the amount of discarded data of the first data flow is greater than the difference between the maximum cache value and the minimum cache value in the cache interval of the BSR reported by the first node, it may cause errors in the BSR reporting. The actual cache interval may be, for example, [3M, 5M), so it is reasonable to configure the first threshold for the BSR cache interval.

Exemplarily, the first threshold may be the median of the BSR buffer interval. For example, if the buffer interval is [3M, 5M], the first threshold may be configured as 4M.

FIG4 is a second flow chart of an information indication method provided in an embodiment of the present application. In an optional embodiment, as shown in FIG4 , the above S302 includes:

S3021. When the amount of discarded data of the first data stream is greater than the first threshold, the first entity of the first node indicates at least one of the following to the second entity of the first node: first indication information; information on the amount of discarded data of the first data stream; information on the amount of cached data of the first data stream.

In one example, the first entity of the first node includes at least one of a PDCP layer and an RLC layer of the first node, The second entity includes a MAC layer of the first node. In another example, the first entity of the first node is a PDCP layer of the first node, and the second entity of the first node is an RLC layer of the first node.

The above indication of the first node is used for resource scheduling by the MAC layer of the first node. Exemplarily, the MAC layer of the first node may report the latest cache interval to the second node according to the discarded data volume information of the first data stream, that is, re-report the BSR, wherein the second node may be the network device shown in FIG. 1.

The above S3021 is described in detail below in conjunction with Figures 5 to 7. Figure 5 is a flowchart diagram 3 of the information indication method provided in the embodiment of the present application, Figure 6 is a flowchart diagram 4 of the information indication method provided in the embodiment of the present application, and Figure 7 is a flowchart diagram 5 of the information indication method provided in the embodiment of the present application.

Specifically, S3021 may include at least one of the following execution modes:

Implementation method 1: When the amount of discarded data of the first data stream is greater than the first threshold, the PDCP entity of the first node indicates at least one of the following to the MAC entity of the first node: first indication information; discarded data amount information of the first data stream; cached data amount information of the first data stream, as shown in Figure 5.

It can also be described as: the MAC layer of the first node obtains at least one of the first indication information indicated by the PDCP layer of the first node, the discarded data amount information of the first data flow, or the buffered data amount information of the first data flow.

Implementation method 2: When the amount of discarded data of the first data stream is greater than the first threshold, the PDCP entity of the first node indicates at least one of the following to the RLC entity of the first node: first indication information; discarded data amount information of the first data stream; cached data amount information of the first data stream, as shown in Figure 6.

It can also be described as: the RLC layer of the first node obtains at least one of the first indication information indicated by the PDCP layer of the first node, the discarded data amount information of the first data flow, or the buffered data amount information of the first data flow.

Execution method 3: When the amount of discarded data of the first data stream is greater than the first threshold, the RLC entity of the first node indicates at least one of the following to the MAC entity of the first node: first indication information; discarded data amount information of the first data stream; cached data amount information of the first data stream, as shown in Figure 7.

It can also be described as: the MAC layer of the first node obtains at least one of the first indication information indicated by the RLC layer of the first node, the discarded data amount information of the first data flow, or the buffered data amount information of the first data flow.

It can be understood that when the first data stream includes the second data stream, the PDCP entity determines whether the amount of discarded data of the first data stream is greater than the first threshold, which can be the PDCP entity determining whether the amount of discarded data of the second data stream is greater than the first threshold. When the first data stream includes the second data stream and the third data stream, the PDCP entity determines whether the amount of discarded data of the first data stream is greater than the first threshold, including the PDCP entity determining whether the amount of discarded data of the second data stream is greater than the first threshold, or the PDCP entity determining whether the sum of the amount of discarded data of the second data stream and the amount of discarded data of the third data stream is greater than the first threshold. The PDCP entity determines whether the sum of the amount of discarded data of the second data stream and the amount of discarded data of the third data stream is greater than the first threshold, which can include the case where the amount of discarded data of the second data stream is less than the first threshold or the case where the amount of discarded data of the second data stream is greater than the first threshold. When the amount of discarded data of the second data stream is less than the first threshold, the PDCP entity needs to obtain the amount of discarded data of the third data stream.

It can be understood that, when the first data stream includes the second data stream, the PDCP indicates the first indication information (the first data stream is discarded), the discarded data amount of the first data stream, or the buffered data amount information of the first data stream to the MAC layer, and the PDCP entity can indicate the first indication information (the second data stream is discarded), the discarded data amount of the second data stream, or the buffered data amount information of the second data stream to the MAC layer. When the first data stream includes the second data stream and the third data stream, the PDCP indicates the first indication information (the first data stream is discarded), the discarded data amount of the first data stream, or the buffered data amount information of the first data stream to the MAC layer, and the PDCP indicates the first indication information (the second data stream is discarded), the discarded data amount of the first data stream, or the buffered data amount information of the first data stream to the MAC layer. The PDCP layer may indicate to the MAC layer the first indication information (the first data stream is discarded), the amount of discarded data of the second data stream, or the amount of cached data of the second data stream. The PDCP layer may also indicate to the MAC layer the first indication information (the first data stream is discarded), the amount of discarded data of the first data stream, or the amount of cached data of the first data stream.

It can be understood that when the first data stream includes the second data stream, the RLC entity determining whether the amount of discarded data of the first data stream is greater than the first threshold may be the RLC entity determining whether the amount of discarded data of the second data stream is greater than the first threshold.

It can be understood that when the first data stream includes the second data stream and the third data stream, the RLC entity determines whether the amount of discarded data of the first data stream is greater than the first threshold, including the RLC entity determining whether the amount of discarded data of the second data stream is greater than the first threshold, or the RLC entity determining whether the amount of discarded data of the third data stream is greater than the first threshold, or the RLC entity determining whether the sum of the amount of discarded data of the second data stream and the amount of discarded data of the third data stream is greater than the first threshold. The RLC entity determines whether the sum of the discarded data amount of the second data stream and the discarded data amount of the third data stream is greater than the first threshold, which may include the case where the discarded data amount of the second data stream is less than the first threshold or the case where the discarded data amount of the second data stream is greater than the first threshold. When the discarded data amount of the second data stream is less than the first threshold, the RLC entity needs to determine whether the sum of the discarded data amount of the second data stream and the third data stream is greater than the first threshold; it may also include the case where the discarded data amount of the third data stream is less than the first threshold or the case where the discarded data amount of the third data stream is greater than the first threshold. When the discarded data amount of the third data stream is less than the first threshold, the RLC entity needs to determine whether the sum of the discarded data amount of the second data stream and the third data stream is greater than the first threshold. Therefore, the combination method includes the following contents:

1) Combination mode 1: the first data stream is greater than the first threshold, the second data stream is less than the first threshold, and the third data stream is less than the first threshold;

2) Combination mode 2: the first data stream is greater than the first threshold, the second data stream is greater than the first threshold, and the third data stream is less than the first threshold;

3) Combination mode 3: the first data stream is greater than the first threshold, the second data stream is less than the first threshold, and the third data stream is greater than the first threshold;

4) Combination mode 4: the first data stream is greater than the first threshold, the second data stream is greater than the first threshold, and the third data stream is greater than the first threshold.

It can be understood that, when the first data stream includes the second data stream, the RLC indicates the first indication information (the first data stream is discarded), the discarded data amount of the first data stream, or the buffered data amount information of the first data stream to the MAC layer, which can be the RLC entity MAC layer indicating the first indication information (the second data stream is discarded), the discarded data amount of the second data stream, or the buffered data amount information of the second data stream. When the first data stream includes the second data stream and the third data stream, the RLC indicates the first indication information (the first data stream is discarded), the discarded data amount of the first data stream, or the buffered data amount information of the first data stream to the MAC layer, which can be the RLC indicating the first indication information (the second data stream is discarded), the discarded data amount of the second data stream, or the buffered data amount information of the second data stream to the MAC layer, or the RLC indicating the first indication information (the third data stream is discarded), the discarded data amount of the third data stream, or the buffered data amount information of the third data stream to the MAC layer, or the RLC indicating the first indication information (the first data stream is discarded), the discarded data amount of the first data stream, or the buffered data amount information of the first data stream to the MAC layer.

It is understandable that when the PDCP entity indicates information to the RLC entity, the PDCP entity needs to determine the RLC entity to which the first data stream is transmitted, and the PDCP entity subsequently transmits information to the RLC entity. When the PDCP entity indicates information to the MAC entity, the PDCP entity needs to determine the RLC entity to which the first data stream is transmitted, and determine the MAC entity associated with the RLC entity, and the PDCP entity subsequently transmits information to the MAC entity. When transmitting information to a MAC entity, it is necessary to determine the MAC entity associated with the RLC entity and subsequently transmit information to the MAC entity.

It should be noted that in the above-mentioned execution modes, the PDCP entity is an entity of the PDCP layer of the first node, the RLC entity is an entity of the RLC layer of the first node, and the MAC entity is an entity of the MAC layer of the first node, wherein the PDCP entity and the RLC entity have an associated relationship, and the RLC entity and the MAC entity have an associated relationship.

The association relationship among the PDCP entity, the RLC entity, and the MAC entity is explained below in conjunction with the accompanying drawings. Exemplarily, FIG8 is a connection diagram of the internal entities of the first node provided in an embodiment of the present application. As shown in FIG8 , the PDCP entity is an entity of the PDCP layer of the first node. For the PDCP entity, multiple RLC entities may be connected, such as RLC entity 1, RLC entity 2, RLC entity 3, and RLC entity 4 in FIG8 . Different RLC entities are connected to the same or different MAC entities, for example, RLC entity 1 and RLC entity 2 in FIG8 are connected to MAC entity 1, and RLC entity 3 and RLC entity 4 are connected to MAC entity 2.

Based on the entity connection relationship shown in FIG8 , in one example, if the PDCP entity has transmitted part of the data in the data stream with data discarded to RLC entity 1, and the amount of discarded data in the data stream is greater than or equal to the first threshold, the PDCP entity may indicate to RLC entity 1 at least one of the discard of the data stream, the amount of discarded data in the data stream, or the amount of cached data in the data stream, and/or indicate to MAC entity 1 connected to RLC entity 1 at least one of the discard of the data stream, the amount of discarded data in the data stream, or the amount of cached data in the data stream. In this example, the PDCP entity has an association relationship with RLC entity 1, and RLC entity 1 has an association relationship with MAC entity 1. It can be seen that the association relationship between the PDCP entity and the RLC entity can be understood as a data transmission relationship between the PDCP entity and the RLC entity (specifically a transmission relationship with discarded data streams), and the association relationship between the RLC entity and the MAC entity can also be understood as a data transmission relationship between the RLC entity and the MAC entity.

Based on the connection relationship of the internal entities of the first node shown in Figure 8, in some embodiments, the information indication method also includes: the PDCP entity of the first node determines the RLC entity of the first node to which the first data stream is transmitted, and determines the MAC entity of the first node associated with the RLC entity.

The above-mentioned execution mode 1 is described in detail below.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream. The above-mentioned execution mode 1 includes: when the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity determines the RLC entity to which the second data stream is sent, determines the MAC entity associated with the RLC entity, and indicates to the MAC entity through the RLC entity (that is, the PDCP entity first sends information to the RLC entity, and the RLC entity sends it to the MAC entity after receiving it) at least one of the first indication information, the amount of discarded data of the second data stream, or the amount of buffered data of the second data stream. The first indication information is used to indicate that the second data stream is discarded.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream. The above-mentioned execution mode 1 includes: when the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity determines the RLC entity to which the second data stream is sent, determines the MAC entity associated with the RLC entity, and the PDCP entity indicates to the MAC entity at least one of the first indication information, the amount of discarded data of the second data stream, or the amount of cached data of the second data stream. The first indication information is used to indicate the discard of the second data stream.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream. The above-mentioned execution mode 1 includes: when the PDCP entity of the first node determines that data of the second data stream is discarded, the PDCP entity obtains the amount of discarded data of the second data stream, and when the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity indicates first indication information to the MAC entity of the first node, wherein the first indication information is used to indicate that the second data stream is discarded.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream. The above-mentioned execution mode 1 includes: when the PDCP entity of the first node determines that data of the second data stream is discarded, the PDCP entity obtains the amount of discarded data of the second data stream, and when the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity indicates the information of the amount of discarded data of the second data stream to the MAC entity of the first node.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream. The above-mentioned execution mode 1 includes: when the PDCP entity of the first node determines that data of the second data stream is discarded, the PDCP entity obtains the amount of discarded data of the second data stream, and when the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity indicates the cached data amount information of the second data stream to the MAC entity of the first node.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream. The above-mentioned execution mode 1 includes: when the PDCP entity of the first node determines that data of the second data stream is discarded, it obtains the amount of discarded data of the second data stream, and when the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity indicates at least two of the following to the MAC entity of the first node: first indication information; information on the amount of discarded data of the second data stream; and information on the amount of cached data of the second data stream.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream. The above-mentioned execution mode 1 includes: when the PDCP entity of the first node determines that the second data stream has data discarded, it obtains the amount of discarded data of the second data stream, and when the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity determines the RLC entity to which the second data stream is sent, determines the MAC entity associated with the RLC entity, and indicates at least one of the first indication information, the amount of discarded data of the second data stream, or the amount of cached data of the second data stream to the MAC entity. The first indication information is used to indicate the discard of the second data stream.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream and the amount of discarded data of the third data stream. The above-mentioned execution mode 1 includes: when the amount of discarded data of the first data stream is greater than the first threshold, the PDCP entity determines the RLC entity to which the first data stream is sent, determines the MAC entity associated with the RLC entity, and the PDCP entity indicates to the MAC entity through the RLC entity, or indicates to the MAC entity at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of cached data of the first data stream. The first indication information is used to indicate that the first data stream (including the second data stream and the third data stream) is discarded.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream and the amount of discarded data of the third data stream. The above-mentioned execution mode 1 includes: when the PDCP entity of the first node determines that the first data stream has data discarded, it obtains the amount of discarded data of the first data stream, and when the amount of discarded data of the first data stream is greater than the first threshold, it indicates at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of cached data of the first data stream to the MAC entity of the first node. The first indication information is used to indicate that the first data stream (including the second data stream and the third data stream) is discarded.

Exemplarily, when the PDCP entity of the first node determines that data has been discarded in the second data stream, the PDCP entity obtains the amount of discarded data of the second data stream and/or the amount of cached data of the second data stream, and/or the PDCP entity obtains the amount of discarded data of the third data stream and/or the amount of cached data of the third data stream from the RLC entity of the first node. When the PDCP entity determines that the total amount of discarded data of the second data stream and the third data stream (the amount of discarded data of the first data stream) is greater than the first threshold, the PDCP entity indicates at least one of the first indication information (indicating the discard of the first data stream), the amount of discarded data information of the first data stream, or the amount of cached data information of the first data stream to the MAC entity associated with the RLC entity. In this example, the cached data amount information of the first data stream includes the cached data amount of the second data stream and/or the cached data amount of the third data stream.

In the above example, when the PDCP entity of the first node determines that data has been discarded in the second data stream, the PDCP entity obtains the amount of discarded data of the second data stream. In one possible implementation, if the PDCP entity determines that the amount of discarded data of the second data stream is less than or equal to the first threshold, the PDCP entity indicates the amount of discarded data information of the second data stream to the RLC entity of the first node, as shown in Figure 9. In another possible implementation, if the PDCP entity determines that the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity indicates at least one of the first indication information (indicating the discard of the second data stream), the amount of discarded data of the second data stream, or the amount of buffered data of the second data stream to the RLC entity. Based on any one of the above two implementations, the RLC entity may indicate the amount of discarded data of the third data stream and/or the amount of buffered data of the third data stream to the PDCP entity, so that the PDCP entity determines whether the total amount of discarded data of the second data stream and the third data stream is greater than the first threshold.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream and the amount of discarded data of the third data stream. The above-mentioned execution mode 1 includes: when the PDCP entity of the first node determines that there is data discard in the first data stream, it obtains the amount of discarded data of the first data stream, and when the amount of discarded data of the first data stream is greater than the first threshold, the PDCP entity determines the RLC entity of the first node to which the first data stream arrives, determines the MAC entity associated with the RLC entity, and indicates at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of cached data of the first data stream to the MAC entity. The first indication information is used to indicate the first data stream.

The above-mentioned execution mode 2 is described in detail below.

In an optional embodiment, the discarded data amount of the first data stream includes the discarded data amount of the second data stream. The above-mentioned execution mode 2 includes: when the discarded data amount of the second data stream is greater than the first threshold, the PDCP entity determines the RLC entity to which the second data stream is sent, and indicates at least one of the first indication information, the discarded data amount information of the second data stream, or the buffered data amount information of the second data stream to the RLC entity. The first indication information is used to indicate that the second data stream is discarded.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream. The above-mentioned execution mode 2 includes: the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream. The above-mentioned execution mode 2 includes: when the PDCP entity of the first node determines that there is data discarded in the second data stream, it obtains the amount of discarded data of the second data stream, and when the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity indicates first indication information to the RLC entity of the first node, and the first indication information is used to indicate the discard of the second data stream. In this embodiment, after receiving the discard of the second data stream, the RLC entity can notify the PDCP entity to send the amount of discarded data of the second data stream, so that the RLC entity can determine the total amount of discarded data, and the total amount of discarded data includes the amount of discarded data of the second data stream and the amount of discarded data of the third data stream.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream. The above-mentioned execution mode 2 includes: when the PDCP entity of the first node determines that data of the second data stream is discarded, the PDCP entity obtains the amount of discarded data of the second data stream, and when the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity indicates the information of the amount of discarded data of the second data stream to the RLC entity of the first node.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream. The above-mentioned execution mode 2 includes: when the PDCP entity of the first node determines that data of the second data stream is discarded, the PDCP entity obtains the amount of discarded data of the second data stream, and when the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity indicates the buffered data amount information of the second data stream to the RLC entity of the first node.

In an optional embodiment, the amount of discarded data of the first data flow includes the amount of discarded data of the second data flow. The above-mentioned execution mode 2 includes: when the PDCP entity of the first node determines that the second data flow has data discarded, obtaining the amount of discarded data of the second data flow, when the amount of discarded data of the second data flow is greater than the first threshold, the PDCP entity sends a message to the first node; The RLC entity indicates at least two of the following: first indication information; discarded data volume information of the second data flow; and buffered data volume information of the second data flow. The first indication information is used to indicate that the second data flow is discarded.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream. The above-mentioned execution mode 2 includes: when the PDCP entity of the first node determines that the second data stream has data discarded, it obtains the amount of discarded data of the second data stream, and when the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity determines the RLC entity to which the second data stream is sent, and indicates at least one of the first indication information, the amount of discarded data of the second data stream, or the amount of cached data of the second data stream to the RLC entity. The first indication information is used to indicate the discard of the second data stream.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream and the amount of discarded data of the third data stream. The above-mentioned execution mode 2 includes: when the amount of discarded data of the first data stream is greater than the first threshold, the PDCP entity determines the RLC entity of the first node to which the first data stream is sent, and indicates at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of buffered data of the first data stream to the RLC entity. The first indication information is used to indicate the first data stream.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream and the amount of discarded data of the third data stream. The above-mentioned execution mode 2 includes: when the PDCP entity of the first node determines that data of the first data stream is discarded, it obtains the amount of discarded data of the first data stream, and when the amount of discarded data of the first data stream is greater than the first threshold, it indicates at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of buffered data of the first data stream to the RLC entity of the first node.

Exemplarily, when the PDCP entity of the first node determines that data has been discarded in the second data stream, the PDCP entity obtains the amount of discarded data of the second data stream and/or the amount of cached data of the second data stream, and/or the PDCP entity obtains the amount of discarded data of the third data stream and/or the amount of cached data of the third data stream from the RLC entity of the first node. When the PDCP entity determines that the total amount of discarded data of the second data stream and the third data stream (the amount of discarded data of the first data stream) is greater than the first threshold, the PDCP entity indicates to the RLC entity at least one of the first indication information (indicating the discard of the first data stream), the amount of discarded data information of the first data stream, or the amount of cached data information of the first data stream. In this example, the cached data amount information of the first data stream includes the cached data amount of the second data stream and/or the cached data amount of the third data stream.

In the above example, when the PDCP entity of the first node determines that data has been discarded in the second data stream, the PDCP entity obtains the amount of discarded data of the second data stream. In one possible implementation, if the PDCP entity determines that the amount of discarded data of the second data stream is less than or equal to the first threshold, the PDCP entity indicates the amount of discarded data information of the second data stream to the RLC entity of the first node, as shown in Figure 9. In another possible implementation, if the PDCP entity determines that the amount of discarded data of the second data stream is greater than the first threshold, the PDCP entity indicates at least one of the first indication information (indicating the discard of the second data stream), the amount of discarded data of the second data stream, or the amount of buffered data of the second data stream to the RLC entity. Based on any one of the above two implementations, the RLC entity may indicate the amount of discarded data of the third data stream and/or the amount of buffered data of the third data stream to the PDCP entity, so that the PDCP entity determines whether the total amount of discarded data of the second data stream and the third data stream is greater than the first threshold.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream and the amount of discarded data of the third data stream. The above-mentioned execution mode 2 includes: when the PDCP entity of the first node determines that there is data discard in the first data stream, it obtains the amount of discarded data of the first data stream, and when the amount of discarded data of the first data stream is greater than the first threshold, the PDCP entity determines the RLC entity of the first node to which the first data stream arrives, and indicates at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of cached data of the first data stream to the RLC entity. The first indication information is used to indicate the first data stream.

The above-mentioned execution mode 3 is described in detail below.

Based on the connection relationship of the internal entities of the first node shown in FIG. 8 , in some embodiments, the information indication method further includes: the RLC entity of the first node determines the MAC entity of the first node associated with the RLC entity.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream, and the above-mentioned execution mode 3 includes: when the amount of discarded data of the second data stream is greater than the first threshold, the RLC entity determines the MAC entity of the first node associated with the RLC entity, and indicates to the MAC entity at least one of the first indication information, the amount of discarded data of the second data stream, or the amount of cached data of the second data stream, wherein the first indication information is used to indicate the discard of the second data stream. In this embodiment, data discard occurs at the PDCP layer, and no data discard occurs at the RLC layer.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream, and the above-mentioned execution mode 3 includes: the RLC entity of the first node obtains the amount of discarded data of the second data stream and/or the amount of cached data of the second data stream from the PDCP entity of the first node (it can also be described as: the RLC entity receives the amount of discarded data of the second data stream and/or the amount of cached data of the second data stream indicated by the PDCP entity), and when the amount of discarded data of the second data stream is greater than the first threshold, the RLC entity indicates at least one of the first indication information, the amount of discarded data of the second data stream, or the amount of cached data of the second data stream to the MAC entity of the first node, wherein the first indication information is used to indicate the discard of the second data stream. In this embodiment, data discard occurs at the PDCP layer, and no data discard occurs at the RLC layer.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream, and the above-mentioned execution mode 3 includes: the RLC entity of the first node obtains the amount of discarded data of the second data stream and/or the amount of cached data of the second data stream from the PDCP entity of the first node, and when the amount of discarded data of the second data stream is greater than the first threshold, the RLC entity determines the MAC entity of the first node associated with the RLC entity, and indicates at least one of the first indication information, the amount of discarded data of the second data stream, or the amount of cached data of the second data stream to the MAC entity, wherein the first indication information is used to indicate the discard of the second data stream. In this embodiment, data discard occurs at the PDCP layer, and no data discard occurs at the RLC layer.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the third data stream. The above-mentioned execution mode 3 includes: when the amount of discarded data of the third data stream is greater than the first threshold, the RLC entity determines the MAC entity of the first node associated with the RLC entity, and indicates at least one of the first indication information, the amount of discarded data of the third data stream, or the amount of cached data of the third data stream to the MAC entity, and the first indication information is used to indicate the discard of the third data stream. In this embodiment, data discard occurs at the RLC layer, and no data discard occurs at the PDCP layer.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the third data stream. The above-mentioned execution mode 3 includes: when the RLC entity of the first node determines that the third data stream has data discarded, it obtains the amount of discarded data of the third data stream and/or the amount of cached data of the third data stream, and when the amount of discarded data of the third data stream is greater than the first threshold, the RLC entity indicates at least one of the first indication information, the amount of discarded data of the third data stream, or the amount of cached data of the third data stream to the MAC entity of the first node, and the first indication information is used to indicate the discard of the third data stream. In this embodiment, data discard occurs at the RLC layer, and no data discard occurs at the PDCP layer.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the third data stream. The above-mentioned execution method 3 includes: when the RLC entity of the first node determines that the third data stream has data discarded, it obtains the amount of discarded data of the third data stream and/or the amount of cached data of the third data stream. When the amount of discarded data of the third data stream is greater than the first threshold, the RLC entity determines the MAC entity of the first node associated with the RLC entity, and indicates at least one of the first indication information, the amount of discarded data of the third data stream, or the amount of cached data of the third data stream to the MAC entity, and the first indication information is used to indicate that the third data stream is discarded. In this embodiment, data discard occurs at the RLC layer, and no data discard occurs at the PDCP layer. throw away.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream and the amount of discarded data of the third data stream. The above-mentioned execution mode 3 includes: when the amount of discarded data of the first data stream is greater than the first threshold, the RLC entity determines the MAC entity of the first node associated with the RLC entity, and indicates at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of cached data of the first data stream to the MAC entity.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream and the amount of discarded data of the third data stream. The above-mentioned execution mode 3 includes: when the RLC entity of the first node determines that data of the first data stream is discarded, it obtains the amount of discarded data of the first data stream, and when the amount of discarded data of the first data stream is greater than the first threshold, it indicates at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of cached data of the first data stream to the MAC entity of the first node.

In an optional embodiment, the amount of discarded data of the first data stream includes the amount of discarded data of the second data stream and the amount of discarded data of the third data stream. The above-mentioned execution mode 3 includes: when the RLC entity of the first node determines that data of the first data stream is discarded, it obtains the amount of discarded data of the first data stream, and when the amount of discarded data of the first data stream is greater than a first threshold, the RLC entity determines the MAC entity of the first node associated with the RLC entity, and indicates at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of cached data of the first data stream to the MAC entity.

In one example, the RLC entity of the first node obtains the amount of discarded data of the second data stream and/or the amount of buffered data of the second data stream from the PDCP entity of the first node (it can also be described as: the RLC entity receives the amount of discarded data of the second data stream and/or the amount of buffered data of the second data stream indicated by the PDCP entity), and the RLC entity obtains the amount of discarded data of the third data stream and/or the amount of buffered data of the second data stream. When the RLC entity determines that the sum of the amount of discarded data of the second data stream and the amount of discarded data of the third data stream (i.e., the amount of discarded data of the first data stream) is greater than the first threshold, the RLC entity determines the MAC entity of the first node associated with the RLC entity, and indicates at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of buffered data of the first data stream to the MAC entity. The first indication information is used to indicate the discard of the first data stream. In this example, the RLC entity of the first node obtains the amount of discarded data of the second data stream from the PDCP entity of the first node, i.e., the PDCP entity indicates the amount of discarded data of the second data stream to the RLC entity. For the PDCP entity, when the PDCP entity determines that the amount of discarded data of the second data flow is less than or equal to the first threshold, the PDCP entity indicates the amount of discarded data of the second data flow to the RLC entity.

In another example, the RLC entity of the first node receives the first indication information (indicating the discard of the second data stream) indicated by the PDCP entity of the first node, and the RLC entity notifies the PDCP entity to send the discarded data amount of the second data stream and/or the cached data amount of the second data stream. The RLC entity obtains the discarded data amount of the third data stream and/or the cached data amount of the third data stream. When the RLC entity determines that the sum of the discarded data amount of the second data stream and the discarded data amount of the third data stream (i.e., the discarded data amount of the first data stream) is greater than the first threshold, the RLC entity determines the MAC entity of the first node associated with the RLC entity, and indicates at least one of the first indication information, the discarded data amount information of the first data stream, or the cached data amount information of the first data stream to the MAC entity. The first indication information is used to indicate the discard of the first data stream.

In the above-mentioned embodiments, data discard occurs at the PDCP layer and the RLC layer. The difference between the RLC layer and the PDCP layer is that the RLC layer is lower than the PDCP layer, so when data discard occurs, the amount of discarded data generated by the PDCP layer (and/or the amount of buffered data at the PDCP layer) can be notified to the RLC layer, so the RLC layer can obtain the information of the amount of discarded data at the PDCP layer (and/or the amount of buffered data at the PDCP layer). The RLC layer can combine the discarded data amount information of this layer to count the total amount of discarded data at the PCDP layer and the RLC layer (and/or the total amount of buffered data at the PDCP layer and the RLC layer), and then determine whether the total amount of discarded data is greater than the first threshold. If the total amount of discarded data is greater than the first threshold, the RLC layer sends a message to the MAC layer. Indicates at least one of data discard, total discarded data amount information, or total buffered data amount information.

In the above-mentioned embodiments, the RLC entity is an RLC entity determined by the PDCP entity to have received at least one data packet in the second data stream, and the MAC entity is a MAC entity associated with the RLC entity.

In summary, the information indication of S3021 may be performed by the PDCP layer or the RLC layer of the first node:

The execution of the PDPC layer includes: when the PDCP entity determines that data is discarded, the PDCP entity obtains the amount of discarded data. If it is determined that the amount of discarded data is greater than a first threshold, the PDCP entity can indicate at least one of the data discard, the amount of discarded data, or the amount of cached data to the RLC entity, and can also indicate at least one of the data discard, the amount of discarded data, or the amount of cached data to the MAC entity associated with the RLC entity.

The execution of the RLC layer includes: when the RLC entity determines that data is discarded, the RLC entity obtains the amount of discarded data. If it is determined that the amount of discarded data is greater than a first threshold, the RLC entity can indicate at least one of the data discard, the amount of discarded data or the amount of cached data to the MAC entity associated with the RLC entity.

The above information indication can trigger the MAC entity to report cache update, which can avoid the situation where the cache previously reported by the first node has errors due to data discard.

FIG10 is a flow chart of an information indication method according to an embodiment of the present application. In an optional embodiment, as shown in FIG10 , the above S302 includes:

S3022. When the amount of discarded data of the first data stream is greater than the first threshold, the first node indicates at least one of the following to the second node: first indication information; information on the amount of discarded data of the first data stream; and information on the amount of cached data of the first data stream.

Among them, the first indication information is used to indicate that the first data stream is discarded, the discarded data volume information of the first data stream includes the discarded data volume of the first data stream, the cached data volume information of the first data stream includes the cached data volume of the first data stream, and the cached data volume of the first data stream is the cached data volume after data discard occurs in the first data stream.

In an optional embodiment, when the amount of discarded data of the first data stream is greater than a first threshold, the MAC layer of the first node indicates to the second node at least one of the first indication information, the discarded data amount information of the first data stream, or the cached data amount information of the first data stream, so that the second node allocates uplink resources to the first node.

In an optional embodiment, when the amount of discarded data of the first data stream is greater than a first threshold, the MAC layer of the first node indicates the discarded data amount information of the first data stream to the second node, and the second node determines the cached data amount information of the first data stream based on the discarded data amount information of the first data stream and/or the cached data amount information previously reported by the first node, and then allocates uplink resources to the first node.

In an optional embodiment, when the amount of discarded data of the first data stream is greater than a first threshold, the MAC layer of the first node indicates the cached data amount information of the first data stream to the second node, and the second node allocates uplink resources to the first node based on the cached data amount information of the first data stream.

It can be understood that when the first data stream includes the second data stream, the MAC entity determines that the amount of discarded data of the first data stream is greater than the first threshold, which may be the case that the MAC entity determines that the amount of discarded data of the second data stream is greater than the first threshold.

It can be understood that when the first data stream includes the second data stream and the third data stream, the MAC entity determines whether the amount of discarded data of the first data stream is greater than the first threshold, including the MAC entity determining whether the amount of discarded data of the second data stream is greater than the first threshold, or the MAC entity determining whether the amount of discarded data of the third data stream is greater than the first threshold, or the MAC entity determining whether the sum of the amount of discarded data of the second data stream and the amount of discarded data of the third data stream is greater than the first threshold. The MAC entity determines whether the sum of the amount of discarded data of the second data stream and the amount of discarded data of the third data stream is greater than the first threshold, which may include the case where the amount of discarded data of the second data stream is less than the first threshold or the case where the amount of discarded data of the second data stream is greater than the first threshold. When the amount of discarded data of the second data stream is less than the first threshold, the MAC The entity needs to determine whether the sum of the discarded data volume of the second data stream and the third data stream is greater than the first threshold; at the same time, it can include the case where the discarded data volume of the third data stream is less than the first threshold or the case where the discarded data volume of the third data stream is greater than the first threshold. When the discarded data volume of the third data stream is less than the first threshold, the MAC entity needs to determine whether the sum of the discarded data volume of the second data stream and the third data stream is greater than the first threshold. Therefore, the combination method includes the following contents:

1) Combination mode 1: the first data stream is greater than the first threshold, the second data stream is less than the first threshold, and the third data stream is less than the first threshold;

2) Combination mode 2: the first data stream is greater than the first threshold, the second data stream is greater than the first threshold, and the third data stream is less than the first threshold;

3) Combination mode 3: the first data stream is greater than the first threshold, the second data stream is less than the first threshold, and the third data stream is greater than the first threshold;

4) Combination mode 4: the first data stream is greater than the first threshold, the second data stream is greater than the first threshold, and the third data stream is greater than the first threshold.

It is understandable that when the MAC entity determines whether the amount of discarded data of the first data flow is greater than the first threshold, the MAC entity needs to obtain the amount of discarded data of the first data flow.

It can be understood that when the first data stream includes the second data stream, the first node indicates the first indication information (the first data stream is discarded), the discarded data amount of the first data stream, or the cached data amount information of the first data stream to the second node, and the first indication information (the second data stream is discarded), the discarded data amount of the second data stream, or the cached data amount information of the second data stream can be indicated to the first node. When the first data stream includes the second data stream and the third data stream, the first node indicates the first indication information (the first data stream is discarded), the discarded data amount of the first data stream, or the cached data amount information of the first data stream to the second node layer, and the first node can indicate the first indication information (the second data stream is discarded), the discarded data amount of the second data stream, or the cached data amount information of the second data stream to the second node layer, or the first node can indicate the first indication information (the third data stream is discarded), the discarded data amount of the third data stream, or the cached data amount information of the third data stream to the second node, or the first node can indicate the first indication information (the first data stream is discarded), the discarded data amount of the first data stream, or the cached data amount information of the first data stream to the second node.

The information indication method shown in this embodiment sends the above indication to the second node so that the second node allocates uplink resources to the first node based on the indication. This can avoid the second node allocating excess uplink resources to the first node due to data discard in the first node, thereby improving the resource utilization of the entire communication link.

It should be noted that if the first node receives a resource scheduling indication from the second node before indicating at least one of the first indication information, the discarded data amount information of the first data stream, or the cached data amount information of the first data stream, then the first node previously determined that the discarded data amount will not affect the resource scheduling, and therefore the first node does not need to indicate at least one of the first indication information, the discarded data amount information of the first data stream, or the cached data amount information of the first data stream.

Based on the above embodiments, in an optional embodiment, S302 may include: S3021 (indication action of each entity inside the first node) and S3022 (indication action of the MAC layer of the first node to the second node).

In an optional embodiment, when the amount of discarded data of the first data stream is greater than the first threshold, the first entity of the first node (e.g., at least one of the PDCP layer and the RLC layer of the first node) indicates at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of cached data of the first data stream to the second entity of the first node (e.g., the MAC layer of the first node); the second entity of the first node indicates at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of cached data of the first data stream to the second node. The following possible implementations include "the second entity of the first node indicates the amount of cached data of the first data stream to the second node":

In a possible implementation: if the first entity indicates first indication information to the second entity, the second entity may notify the first entity to send the amount of discarded data of the first data flow, the second entity may determine the amount of cached data of the first data flow based on the amount of discarded data of the first data flow, and the second entity indicates the cached data amount information of the first data flow to the second node.

In a possible implementation: if the first entity indicates first indication information to the second entity, the second entity may notify the first entity to send the cached data volume of the first data flow, and the second entity indicates the cached data volume information of the first data flow to the second node.

In a possible implementation: if the first entity indicates the amount of discarded data of the first data flow to the second entity, the second entity can determine the amount of cached data of the first data flow based on the amount of discarded data of the first data flow, and the second entity indicates the cached data amount information of the first data flow to the second node.

In a possible implementation manner: if the first entity indicates the cached data volume of the first data flow to the second entity, the second entity indicates the cached data volume information of the first data flow to the second node.

Optionally, in some other embodiments, when the first entity of the first node (e.g., at least one of the PDCP layer and the RLC layer of the first node) determines that the first data stream has data discarded, the discarded data volume information of the first data stream is obtained, and the discarded data volume information of the first data stream is indicated to the second entity of the first node (e.g., the MAC layer of the first node); the second entity determines whether the discarded data volume of the first data stream is greater than the first threshold. If the discarded data volume of the first data stream is greater than the first threshold, the second entity determines the buffered data volume information of the first data stream, and indicates the buffered data volume information of the first data stream to the second node. The discarded data volume information of the first data stream includes the discarded data volume of the second data stream indicated by the PDCP layer to the MAC layer, and/or the discarded data volume of the third data stream indicated by the RLC layer to the MAC layer.

Different from the above-mentioned embodiment, the MAC layer of the first node in this embodiment has the function of counting the total amount of discarded data and judging whether the total amount of discarded data is greater than the first threshold.

The information indicated by the MAC layer of the first node to the second node in the above-mentioned process is carried by MAC CE (MAC Control Element).

It should be noted that the information indicating the amount of cached data of the first data flow can be understood as triggering resource scheduling when it is determined that data is discarded and the amount of data discarded is greater than the first threshold, such as the first node (such as the MAC layer) re-reporting the BSR to the second node.

To summarize, in the information indication method shown in the embodiment of the present application, when the first node determines that data has been discarded in the first data stream, it obtains the amount of discarded data of the first data stream. If it is determined that the amount of discarded data of the first data stream is greater than a first threshold, the first node triggers the first node to report a cache update to the second node by indicating at least one of the discard of the first data stream, the discarded data amount information of the first data stream, or the cached data amount information of the first data stream, so as to avoid a situation where the cache previously reported by the first node has errors due to data discard.

Based on the above embodiment, FIG11 is a flow chart of an information indication method provided in an embodiment of the present application. As shown in FIG11, the information indication method of this embodiment is applied to a first node of wireless communication, and the first node may be a terminal device as shown in FIG1. The information indication method includes:

S1101. Obtain the amount of discarded data of a first data stream within a preset time period.

In this embodiment, the preset duration may be configured by the second node or obtained by the first node itself (eg, obtained by the first node through calculation using some parameters), and this application does not limit this.

In an optional embodiment, the preset time period may be used to count the amount of discarded data of the first data stream, and the amount of discarded data of the first data stream may be counted when the preset time period expires.

In an optional embodiment, when the first node determines that data is discarded in the first data flow, it starts a timer.

It should be noted that, when the timer is enabled, if data is continuously discarded, the timer will not be restarted unless new data is discarded after the timer times out or stops.

In an optional embodiment, S1101 may include: when the timer times out, obtaining the amount of discarded data of the first data flow within a preset time length. The length of the timer may be the preset time length, and the length of the timer may be configured by the second node. The amount of discarded data of the first data flow within the preset time length obtained includes the amount of data of the data flow that triggers the start of the timer.

In an optional embodiment, the timer corresponds to a data radio bearer (DRB) or a data stream.

Based on the above embodiments, FIG12 shows a schematic diagram of the working principle of a timer.

As shown in (a) of Figure 12, when the first node determines that data in the first data stream is discarded, it starts a timer. When the timer times out, the first node can count the amount of discarded data in the first data stream within the timer duration, and then determine whether the amount of discarded data in the first data stream is greater than the first threshold.

As shown in (b) of Figure 12, when the first node determines that data in the first data stream is discarded, it starts a timer. Before the timer expires, if the first node receives a resource scheduling indication, it stops the timer, and the first node does not need to count the amount of discarded data in the first data stream.

It should be noted that if the timer is configured at the first protocol layer of the first node (such as the PDCP layer or the RLC layer), only the second protocol layer (MAC layer) of the first node can obtain the resource scheduling indication, so the resource scheduling indication can be sent by the second protocol layer of the first node to the first protocol layer of the first node, and the first protocol layer of the first node stops the timer. The resource scheduling indication obtained by the second protocol layer of the first node is sent to the first node by the second node, or it can be said that the first node receives the resource scheduling indication from the second node. When the first node obtains the resource scheduling indication, it means that the first node already has resources for data transmission, so the amount of data discarded before will not affect the resource scheduling, so there is no need to count the amount of discarded data.

Based on (b) of FIG12 , optionally, the length of the timer is less than or equal to the average scheduling time of the resource, wherein the average scheduling time of the resource can be understood as the average time interval for the first node to obtain the resource after reporting the BSR to the second node.

Based on the above-mentioned embodiments, in an optional embodiment, the first node obtains the amount of discarded data of the first data stream, including at least one of the following: the PDCP entity of the first node obtains the amount of discarded data of the second data stream; the RLC entity of the first node obtains the amount of discarded data of the third data stream; the MAC entity of the first node obtains the amount of discarded data of the first data stream.

In an optional embodiment, when the PDCP entity of the first node determines that data has been discarded in the second data stream, the amount of discarded data of the second data stream within a preset time length is obtained.

In an optional embodiment, when the PDCP entity of the first node determines that data has been discarded in the second data stream, the first timer is started, and when the first timer times out, the amount of discarded data in the second data stream is obtained. The length of the first timer can be configured by the second node. In this embodiment, the PDCP entity is used to count the amount of discarded data in the second data stream. If the second data stream includes multiple data streams (e.g., multiple PDU sets), the PDCP entity can count the amount of discarded data for each data stream (e.g., each PDU set) separately, and then count the total amount of discarded data for the multiple data streams.

In an optional embodiment, when the PDCP entity of the first node determines that data of the second data stream is discarded, the first timer is started, and when the first timer times out, the amount of discarded data of the second data stream is obtained. The PDCP entity indicates the first indication information and/or the amount of discarded data of the second data stream to the RLC entity of the first node, and the first indication information is used to indicate the discard of the second data stream. When the RLC entity obtains the first indication information and/or the amount of discarded data of the second data stream, the RLC It can be known that data is discarded within a period of time, that is, the amount of discarded data of the third data flow can be counted, and the RLC entity obtains the amount of discarded data of the third data flow within the first timer duration.

In an optional embodiment, when the PDCP entity of the first node determines that data discard occurs in the second data stream, it indicates data discard indication information to the RLC entity of the first node. At this time, the RLC entity can learn that data discard has occurred at the PDCP entity. When the RLC entity receives data discard indication information from the PDCP entity again (i.e., receives data discard indication information twice in succession), the RLC entity counts the time length between the two data discard indication information for the third data stream.

In an optional embodiment, when the PDCP entity of the first node determines that data has been discarded in the second data stream, it starts the first timer and indicates the indication information of the first timer being turned on to the RLC entity of the first node. At this time, the RLC entity can learn that data discard has occurred in the PDCP entity. When the RLC entity receives the discarded data amount of the second data stream counted by the PDCP entity from the PDCP entity, the RLC entity counts the third data stream information of the time from receiving the indication information of the first timer being turned on to receiving the discarded data amount of the second data stream. In this embodiment, the RLC entity is used to count the sum of the discarded data amount of the second data stream and the discarded data amount of the third data stream, that is, to count the discarded data amount of the first data stream. Among them, the sum of the discarded data amount of the second data stream and the discarded data amount of the third data stream is the total discarded data amount of the PDCP layer and the RLC layer in the same time period.

In an optional embodiment, when the MAC entity of the first node determines that data in the first data stream is discarded, the amount of discarded data in the first data stream within a preset time length is obtained.

In an optional embodiment, when the MAC entity of the first node determines that data has been discarded in the first data stream, the third timer is started, and when the third timer times out, the amount of discarded data in the first data stream is obtained. The length of the third timer can be configured by the second node. Exemplarily, when the third timer times out, the MAC entity obtains the amount of discarded data of the second data stream from the PDCP entity of the first node, and/or the MAC entity obtains the amount of discarded data of the third data stream from the RLC entity of the first node. In this embodiment, the MAC entity is used to count the total amount of discarded data of the second data stream and/or the third data stream within the duration of the third timer (i.e., count the amount of discarded data of the first data stream within the duration of the third timer).

In an optional embodiment, when the PDCP entity of the first node determines that data has been discarded in the second data stream, it starts a first timer. If, before the first timer expires, the PDCP entity obtains a resource scheduling indication (the MAC entity indicates the resource scheduling indication to the RLC entity, and the RLC entity then indicates the resource scheduling indication to the PDCP entity; or, the MAC entity indicates the resource scheduling indication to the PDCP entity), the PDCP entity stops the first timer, and the PDCP entity does not need to count the amount of discarded data in the second data stream.

In an optional embodiment, when the RLC entity of the first node determines that data of the third data stream is discarded, the discarded data amount of the third data stream within a preset time length is obtained.

In an optional embodiment, when the RLC entity of the first node determines that data has been discarded in the third data stream, the second timer is started, and when the second timer times out, the amount of discarded data in the third data stream is obtained. The length of the second timer can be configured by the second node. In this embodiment, data discard occurs at the RLC layer, and no data discard occurs at the PDCP layer. In this embodiment, the RLC entity is used to count the amount of discarded data in the third data stream. If the third data stream includes multiple data streams, the RLC entity can count the total amount of discarded data in the multiple data streams by counting the amount of discarded data of each data stream respectively.

In an optional embodiment, when the RLC entity of the first node determines that data has been discarded in the third data stream, it starts a second timer. If, before the second timer expires, the RLC entity obtains a resource scheduling indication through the MAC entity of the first node, the RLC entity stops the second timer, and the RLC entity does not need to count the amount of discarded data in the third data stream.

It should be noted that the lengths of the first timer, the second timer and the third timer may be the same or different. This embodiment is not limited to this.

S1102: When the amount of discarded data of the first data stream is greater than a first threshold, indicate at least one of first indication information, information about the amount of discarded data of the first data stream, or information about the amount of buffered data of the first data stream.

S1102 of this embodiment may refer to S302 of the above embodiment, which will not be elaborated here.

To summarize, the information indication method shown in the embodiment of the present application is that when the first node determines that data has been discarded in the first data stream, after obtaining the amount of discarded data of the first data stream within a preset time length, if it is determined that the amount of discarded data of the first data stream is greater than a first threshold, the first node triggers the first node to report a cache update to the second node by indicating at least one of the discard of the first data stream, the discarded data amount information of the first data stream, or the cached data amount information of the first data stream, so as to avoid the situation where the cache previously reported by the first node has errors due to data discard.

FIG13 is a flow chart of an information indication method according to an embodiment of the present application. As shown in FIG13 , the information indication method according to the present embodiment includes:

S1301. The second node sends first information.

In one example, the second node sends first information to the first node.

The first information includes at least one of the following information:

Whether to obtain the amount of discarded data of the first data stream;

whether to indicate the first indication information;

Whether to indicate the amount of discarded data of the first data stream;

Whether to indicate the cache data amount information of the first data stream.

In an optional embodiment, the first information includes whether to obtain the amount of discarded data of the first data flow.

In one example, the first information includes first identification information. If the first identification information is used to instruct the first node to obtain the amount of discarded data of the first data stream, the first node triggers the function of obtaining (or counting or calculating) the amount of discarded data of the first data stream based on the first identification information.

In one example, the first information includes first identification information. If the first identification information is used to indicate that the first node does not obtain the amount of discarded data of the first data stream, the first node does not trigger a function of obtaining the amount of discarded data of the first data stream based on the first identification information.

Optionally, in some embodiments, the first information does not include or releases the first identification information. This example is equivalent to the second node not configuring in the first information whether to obtain the identification information of the amount of discarded data of the first data stream. Therefore, the first node will not trigger the function of obtaining the amount of discarded data of the first data stream.

In an optional embodiment, the first information includes whether to indicate first indication information.

In one example, the first information includes second identification information. If the second identification information is used to indicate that the first node indicates the first indication information, the first node triggers a function of the first node indicating the first indication information according to the second identification information.

In one example, the first information includes second identification information. If the second identification information is used to indicate that the first node does not indicate the first indication information, the first node does not trigger a function of indicating the first indication information based on the second identification information.

Optionally, in some embodiments, the first information does not include or releases the second identification information. This example is equivalent to the second node not configuring the identification information of whether to indicate the first indication information in the first information, so the first node will not trigger the function of indicating the first indication information.

In an optional embodiment, the first information includes information indicating whether to indicate the amount of discarded data of the first data flow.

In one example, the first information includes third identification information. If the third identification information is used to indicate that the first node indicates the amount of discarded data of the first data flow, the first node triggers the first node to indicate the amount of discarded data of the first data flow according to the third identification information. The function to discard the amount of data flow information.

In one example, the first information includes third identification information. If the third identification information is used to indicate that the first node does not indicate the discarded data volume information of the first data stream, the first node does not trigger the function of indicating the discarded data volume information of the first data stream based on the third identification information.

Optionally, in some embodiments, the first information does not include or releases the third identification information. This example is equivalent to the second node not configuring the identification information indicating whether to indicate the discarded data volume information of the first data stream in the first information. Therefore, the first node will not trigger the function of indicating the discarded data volume information of the first data stream.

In an optional embodiment, the first information includes information indicating whether to indicate the amount of buffered data of the first data flow. Or the first information includes information indicating whether the first node indicates the amount of buffered data of the first data flow when the first data flow is discarded.

In one example, the first information includes fourth identification information. If the fourth identification information is used to indicate the first node to indicate the cached data volume information of the first data stream, or to indicate the first node to indicate the cached data volume information of the first data stream when the first data stream is discarded, the first node triggers the function of the first node to indicate the cached data volume information of the first data stream based on the fourth identification information.

In one example, the first information includes fourth identification information. If the fourth identification information is used to indicate that the first node does not indicate the cached data volume information of the first data stream, or indicates that the first node does not indicate the cached data volume information of the first data stream when the first data stream is discarded, the first node does not trigger the function of the first node indicating the cached data volume information of the first data stream based on the fourth identification information.

Optionally, in some embodiments, the first information does not include or releases the fourth identification information. This example is equivalent to the second node not configuring the identification information indicating the cached data volume information of the first data stream in the first information. Therefore, the first node will not trigger the function of indicating the cached data volume information of the first data stream.

In some embodiments, the first information further includes at least one of the following: a first threshold; a length of a timer.

Optionally, the first information may include at least one of the following: the length of a first timer; the length of a second timer; the length of a third timer. The first timer may be configured at the PDCP layer of the first node, the second timer may be configured at the RLC layer of the first node, and the third timer may be configured at the MAC layer of the first node. The lengths of the first timer, the second timer, and the third timer may be the same or different.

To summarize, the information indication method shown in the embodiment of the present application can trigger the first node to execute by sending the first information to the first node through the second node: when it is determined that data has been discarded in the first data stream, after obtaining the discarded data amount of the first data stream within a preset time length, if it is determined that the discarded data amount of the first data stream is greater than a first threshold, indicating to the second node at least one of the discard of the first data stream, the discarded data amount information of the first data stream, or the cached data amount information of the first data stream, to avoid errors in the cache reported by the first node to the second node due to data discard, causing the second node to allocate excess resources to the first node.

Figure 14 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. As shown in Figure 14, the terminal device 1400 includes: an acquisition module 1401, which is used to acquire the amount of discarded data of the first data stream; a processing module 1402, which is used to indicate at least one of the first indication information, the amount of discarded data of the first data stream, or the amount of cached data of the first data stream when the amount of discarded data of the first data stream is greater than the first threshold; wherein the first indication information is used to indicate that the first data stream is discarded.

In an optional embodiment, the acquisition module 1401 is used to acquire the amount of discarded data of the first data flow within a preset time period.

In an optional embodiment, the processing module 1402 is configured to start a timer when it is determined that data is discarded in the first data stream.

In an optional embodiment, the acquisition module 1401 is used to acquire the amount of discarded data of the first data flow within a preset time period when the timer times out.

In an optional embodiment, obtaining the amount of discarded data of the first data stream includes at least one of the following: a packet data convergence protocol PDCP entity of a terminal device obtains the amount of discarded data of a second data stream; a radio link layer control protocol RLC entity of the terminal device obtains the amount of discarded data of a third data stream; a media access control MAC entity of the terminal device obtains the amount of discarded data of the first data stream.

In an optional embodiment, the amount of discarded data of the first data stream includes at least one of the amount of discarded data of the second data stream and the amount of discarded data of the third data stream; the amount of discarded data of the second data stream includes at least one of the following data contents: discarded PDCP service data unit SDU of the second data stream; discarded PDCP protocol data unit PDU to be transmitted of the second data stream; discarded PDCP PDU to be retransmitted of the second data stream; the amount of discarded data of the third data stream includes at least one of the following data contents: discarded RLC SDU and RLC SDU segments of the third data stream; discarded RLC PDU to be transmitted of the third data stream; discarded RLC PDU to be retransmitted of the third data stream.

In an optional embodiment, the processing module 1402 is used to indicate at least one of the first indication information, the discarded data volume information of the first data flow, or the cached data volume information of the first data flow to the MAC entity of the terminal device through the PDCP entity of the terminal device.

In an optional embodiment, the processing module 1402 is used to indicate at least one of the first indication information, the discarded data volume information of the first data flow, or the cached data volume information of the first data flow to the RLC entity of the terminal device through the PDCP entity of the terminal device.

In an optional embodiment, the first data stream includes a second data stream, and the processing module 1402 is used to indicate at least one of the first indication information, the discarded data amount information of the first data stream, or the cached data amount information of the first data stream to the RLC entity through the PDCP entity when the discarded data amount of the second data stream is greater than the first threshold.

In an optional embodiment, the first data stream includes a second data stream, and the processing module 1402 is used to indicate the discarded data amount information of the second data stream to the RLC entity through the PDCP entity when the discarded data amount of the second data stream is less than or equal to the first threshold.

In an optional embodiment, the processing module 1402 is used to indicate at least one of the first indication information, the discarded data volume information of the first data stream, or the cached data volume information of the first data stream to the MAC entity of the terminal device through the RLC entity of the terminal device.

In an optional embodiment, the RLC entity is a RLC entity to which the PDCP entity determines to transmit a first data stream, and data in the first data stream is discarded; and the MAC entity is a MAC entity associated with the RLC entity.

In an optional embodiment, the processing module 1402 is used to indicate at least one of the first indication information, the discarded data volume information of the first data flow, or the cached data volume information of the first data flow to the network device through the MAC entity of the terminal device.

In an optional embodiment, the first threshold is configured by the network device; or, the first threshold is determined by the terminal device according to a buffer interval of a buffer status report BSR.

In an optional embodiment, the acquisition module 1401 is used to receive first information from a network device, and the first information includes at least one of the following information: whether to obtain the amount of discarded data of the first data stream; whether to indicate first indication information; whether to indicate the amount of discarded data of the first data stream; whether to indicate the cached data amount information of the first data stream.

In an optional embodiment, the first information further includes at least one of the following: a first threshold; and a length of a timer.

The terminal device provided in this embodiment is used to implement the technical solution of the first node in the aforementioned method embodiment. The current principle and technical effect are similar and will not be described here.

Figure 15 is a schematic diagram of the structure of a network device provided by an embodiment of the present application. As shown in Figure 15, the network device 1500 includes: a sending module 1501, which is used to send a first information, and the first information includes at least one of the following information: whether to obtain the amount of discarded data of the first data flow; whether to indicate the first indication information; whether to indicate the amount of discarded data of the first data flow; whether to indicate the amount of cached data of the first data flow.

In an optional embodiment, the first information further includes at least one of the following: a first threshold; and a length of a timer.

The network device provided in this embodiment is used to implement the technical solution of the second node in the aforementioned method embodiment. Its implementation principle and technical effect are similar and will not be repeated here.

Figure 16 is a schematic diagram of the hardware structure of a terminal device provided in an embodiment of the present application. As shown in Figure 16, the terminal device 1600 includes: a processor 1601 and a memory 1602; the memory 1602 stores computer-executable instructions; the processor 1601 executes the computer-executable instructions stored in the memory 1602, so that the terminal device executes the technical solution of the first node in the aforementioned method embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

Figure 17 is a schematic diagram of the hardware structure of the network device provided in the embodiment of the present application. As shown in Figure 17, the network device 1700 includes: a processor 1701 and a memory 1702; the memory 1702 stores computer-executable instructions; the processor 1701 executes the computer-executable instructions stored in the memory 1702, so that the network device executes the technical solution of the second node in the aforementioned method embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the method steps performed by the first node in the aforementioned method embodiment are implemented.

An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the method steps performed by the second node in the aforementioned method embodiment are implemented.

An embodiment of the present application provides a computer program product, including a computer program. When the computer program is executed, the computer executes the method steps executed by the first node in the aforementioned method embodiment.

An embodiment of the present application provides a computer program product, including a computer program. When the computer program is executed, the computer executes the method steps executed by the second node in the aforementioned method embodiment.

The methods described in the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. If implemented in software, the functions may be stored as one or more instructions or codes on a computer-readable medium or transmitted on a computer-readable medium. Computer-readable media may include computer storage media and communication media, and may also include any medium that can transfer a computer program from one place to another. The storage medium may be any target medium that can be accessed by a computer.

In one possible implementation, a computer-readable medium may include RAM, ROM, compact disc read-only memory (CD-ROM) or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that is intended to carry or store the required program code in the form of instructions or data structures and can be accessed by a computer. Moreover, any connection is appropriately referred to as a computer-readable medium. For example, if a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology (such as infrared, radio and microwave) is used to transmit software from a website, server or other remote source, the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of medium. Disks and optical disks as used herein include optical disks, laser disks, optical disks, digital versatile disks (DVD), floppy disks and Blu-ray disks, where disks usually reproduce data magnetically, while optical disks reproduce data optically using lasers. Combinations of the above should also be included in the scope of computer-readable media.

An embodiment of the present application provides a computer program product, which includes a computer program. When the computer program is executed, the computer executes the above method.

The present application embodiment is described with reference to the flowchart and/or block diagram of the method, device (system) according to the embodiment of the present application. It should be understood that each process and/or box in the flowchart and/or block diagram, and the combination of the process and/or box in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processing unit of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable device to produce a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing device produce a device for implementing the function specified in one process or multiple processes in the flowchart and/or one box or multiple boxes in the block diagram.

The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific implementation methods of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present invention should be included in the protection scope of the present invention.

Claims (22)

An information indication method, characterized in that it is applied to a first node of wireless communication, the method comprising: Obtaining the amount of discarded data of the first data stream; When the amount of discarded data of the first data stream is greater than a first threshold, indicating at least one of first indication information, information about the amount of discarded data of the first data stream, or information about the amount of buffered data of the first data stream; The first indication information is used to indicate that the first data flow is discarded. The method according to claim 1, wherein obtaining the amount of discarded data of the first data stream comprises: The amount of discarded data of the first data flow within a preset time period is obtained. The method according to claim 1 or 2, characterized in that the method further comprises: When it is determined that data in the first data stream is discarded, a timer is started. The method according to any one of claims 1 to 3, characterized in that obtaining the amount of discarded data of the first data flow within the preset time length comprises: When the timer times out, the amount of discarded data of the first data flow within the preset time period is obtained. The method according to any one of claims 1 to 4, characterized in that Obtaining the amount of discarded data of the first data flow includes at least one of the following: The Packet Data Convergence Protocol PDCP entity of the first node obtains the amount of discarded data of the second data flow; The radio link layer control protocol RLC entity of the first node obtains the amount of discarded data of the third data flow; The media access control MAC entity of the first node obtains the discarded data amount of the first data flow. The method according to any one of claims 1 to 5, characterized in that the amount of discarded data of the first data stream includes at least one of the amount of discarded data of the second data stream and the amount of discarded data of the third data stream; The discarded data amount of the second data stream includes at least one of the following data contents: the discarded PDCP service data unit SDU of the second data stream; the discarded PDCP protocol data unit PDU to be transmitted of the second data stream; the discarded PDCP PDU to be retransmitted of the second data stream; The discarded data amount of the third data stream includes at least one of the following data contents: The discarded RLC SDU and RLC SDU segments of the third data stream; the discarded RLC PDU to be transmitted of the third data stream; and the discarded RLC PDU to be retransmitted of the third data stream. The method according to any one of claims 1 to 6, characterized in that indicating at least one of the first indication information, the discarded data amount information of the first data flow, or the buffered data amount information of the first data flow comprises: The PDCP entity of the first node indicates at least one of first indication information, discarded data amount information of the first data flow, or buffered data amount information of the first data flow to the MAC entity of the first node. The method according to any one of claims 1 to 6, characterized in that indicating at least one of the first indication information, the discarded data amount information of the first data flow, or the buffered data amount information of the first data flow comprises: The PDCP entity of the first node indicates at least one of first indication information, discarded data amount information of the first data flow, or buffered data amount information of the first data flow to the RLC entity of the first node. The method according to claim 8, characterized in that the first data flow includes a second data flow, and the PDCP entity of the first node indicates to the RLC entity of the first node at least one of first indication information, discarded data amount information of the first data flow, or buffered data amount information of the first data flow, including: When the amount of discarded data of the second data flow is greater than the first threshold, the PDCP entity sends a The entity indicates at least one of the first indication information, the discarded data amount information of the first data flow, or the buffered data amount information of the first data flow. The method according to claim 8, characterized in that the first data flow includes a second data flow, and the PDCP entity of the first node indicates to the RLC entity of the first node at least one of first indication information, discarded data amount information of the first data flow, or buffered data amount information of the first data flow, including: When the amount of discarded data of the second data flow is less than or equal to the first threshold, the PDCP entity indicates information about the amount of discarded data of the second data flow to the RLC entity. The method according to any one of claims 1 to 6, characterized in that indicating at least one of the first indication information, the discarded data amount information of the first data flow, or the buffered data amount information of the first data flow comprises: The RLC entity of the first node indicates at least one of first indication information, discarded data amount information of the first data flow, or buffered data amount information of the first data flow to the MAC entity of the first node. The method according to any one of claims 7 to 11, characterized in that The RLC entity determines, for the PDCP entity, an RLC entity to which the first data flow is transmitted, wherein data is discarded in the first data flow; The MAC entity is a MAC entity associated with the RLC entity. The method according to any one of claims 1 to 6, characterized in that indicating at least one of the first indication information, the discarded data amount information of the first data flow, or the buffered data amount information of the first data flow comprises: The MAC entity of the first node indicates to the second node at least one of first indication information, discarded data volume information of the first data flow, or cached data volume information of the first data flow. The method according to any one of claims 1 to 13, characterized in that The first threshold is configured by the second node; or The first threshold is determined by the first node according to a buffer interval of a buffer status report BSR. The method according to any one of claims 1 to 14, characterized in that the method further comprises: Receive first information from a second node, where the first information includes at least one of the following information: Whether to obtain the amount of discarded data of the first data flow; whether to indicate the first indication information; Whether to indicate the amount of discarded data of the first data flow; Whether to indicate the cached data amount information of the first data flow. The method according to claim 15, characterized in that the first information further includes at least one of the following: the first threshold; The length of the timer. An information indication method, characterized in that it is applied to a second node of wireless communication, the method comprising: Sending first information, where the first information includes at least one of the following information: Whether to obtain the amount of discarded data of the first data stream; whether to indicate the first indication information; Whether to indicate the amount of discarded data of the first data flow; Whether to indicate the cached data amount information of the first data flow. The method according to claim 17, wherein the first information further includes at least one of the following: First threshold; The length of the timer. A terminal device, characterized in that it comprises: a processor and a memory; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the terminal device executes the method according to any one of claims 1 to 16. A network device, characterized in that it comprises: a processor and a memory; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the network device performs the method according to claim 17 or 18. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the method according to any one of claims 1 to 16, or the method according to claim 17 or 18. A computer program product, characterized in that it comprises a computer program, and when the computer program is executed, it enables a computer to execute the method according to any one of claims 1 to 16, or the method according to claim 17 or 18.