Method for reporting padding buffer status report and apparatus

Abstract

Provided in the embodiments of the present application are a method for reporting a padding buffer status report (padding BSR) and an apparatus, which are applied to a terminal device. The method comprises: when a network device configures a first priority and a second priority for at least one second logic channel, and when a first condition is met, the terminal device reports a first BSR on the basis of the first priority or the second priority. Thus, it is helpful to a UE to determine which LCG's buffer size is reported in a long truncated BSR, so that a network side and a UE side have a consistent understanding of the buffer size reported in the padding BSR, thereby preventing the network device from allocating inappropriate uplink resources and thus failing to ensure the QoS of the UE.

Description

Method and apparatus for reporting padding buffer status report TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of communication technology. BACKGROUND

[0002] 3GPP (3rd Generation Partnership Project) started to study the enhancement for Extended Reality (XR) services in Release 18, which refers to all reality and virtual combinations of environments and human-computer interactions generated by computer technology and wearable devices. The XR service can include Virtual Reality (VR) service, Augmented Reality (AR) service and Mixed Reality (MR) service.

[0003] In Release 19, 3GPP decided to enhance the uplink scheduling for XR services, and will study and specify (if justified) the use of delay / deadline information to support high XR capacity for uplink scheduling while meeting delay requirements or avoiding too late sending packet data units (PDUs). The target is shown in the following table:

[0004] In the last 3GPP RAN2 meeting, the following regulation was agreed: for delay-aware LCP (Logical Channel Prioritization considering delay information), RAN2 (Radio Access Network Working Group 2) considers the following method as a baseline to cover / adjust the priority of logical channels (LCHs) based on delay / deadline information: in the case that some LCHs have delay-critical data, an additional priority configured for these LCHs is used. The specific description is shown in the following table:

[0005] That is, in the LCP enhancement considering delay information, one LCH with delay emergency data to be sent will be configured with an additional priority (referred to as a second priority), that is, in addition to the legacy priority (referred to as a first priority), the user equipment (User Equipment, UE) can temporarily adjust the priority of the LCH to the second priority (for example, the second priority is higher than the first priority), so that the data in the LCH with delay emergency data to be sent can be preferentially sent by the UE to the network device.

[0006] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical scheme of the present application and facilitating the understanding of those skilled in the art. The above technical scheme cannot be considered as known to those skilled in the art only because it is described in the background section of the present application.

[0007] SUMMARY

[0008] The inventors found that according to the enhancement of delay-aware LCP in XR, if one LCH is configured with 2 priorities (a first priority and a second priority), for the reporting of padding buffer status report (padding BSR), in the case that the number of padding bits is greater than the size of short BSR plus its subheader but less than the size of long BSR plus its subheader, if more than one LCG (Logical Channel Group) has data to be sent when the BSR is to be constructed, the user equipment is not clear about which priority to report the padding BSR, and the network equipment is also not clear about which LCG buffer size (BS) will be reported. This may cause the BS of the LCG reported by the user equipment to be inconsistent with the understanding of the network equipment, so that the network equipment cannot appropriately allocate uplink resources to transmit the data to be sent in the LCG of the UE, that is, the network equipment cannot appropriately allocate uplink resources according to the data QoS characteristics (such as including delay requirement, error rate, priority, data rate, etc.) of the LCH included in the LCG reported in the padding BSR, which may result in the inability to guarantee the QoS (Quality of Service) of the service of the UE.

[0009] To solve at least one of the above problems or other similar problems, the embodiments of the present application provide a padding buffer status report (padding BSR) reporting method and device.

[0010] According to an aspect of an embodiment of the present application, a method for reporting padding buffer status reporting is provided, applied to a terminal device, and the method comprises:

[0011] In a case where the network device configures the first priority and the second priority for the at least one second logical channel, when the first condition is met, the terminal device reports the first BSR according to the first priority or the second priority.

[0012] According to another aspect of an embodiment of the present application, a device for reporting padding buffer status reporting is provided, configured in a terminal device, and the device comprises:

[0013] In a case where the network device configures the first priority and the second priority for the at least one second logical channel, when the first condition is met, the sending unit reports the first BSR according to the first priority or the second priority.

[0014] According to another aspect of an embodiment of the present application, a method for configuring padding buffer status reporting is provided, applied to a network device, and the method comprises:

[0015] The sending unit sends indication information to the terminal device, and the indication information configures or indicates whether the terminal device reports the first BSR according to a first priority or according to a second priority.

[0016] In a case where the network device configures the first priority and the second priority for the at least one second logical channel.

[0017] According to another aspect of an embodiment of the present application, a device for configuring padding buffer status reporting is provided, configured in a network device, and the device comprises:

[0018] The sending unit sends indication information to the terminal device, and the indication information configures or indicates whether the terminal device reports the first BSR according to a first priority or according to a second priority.

[0019] In a case where the network device configures the first priority and the second priority for the at least one second logical channel.

[0020] According to still another aspect of an embodiment of the present application, a method for reporting delay status reporting (DSR) is provided, applied to a terminal device, and the method comprises:

[0021] When the second condition is met, the terminal device reports the DSR, and the DSR comprises one of the following:

[0022] a remaining time and a buffer size of a logical channel group (LCG) configured for the terminal device or a remaining time and a buffer size of a logical channel group (LCG) configured with data to be sent; or

[0023] a remaining time of a logical channel group (LCG), an identity and / or a priority of a logical channel (LCH) in the LCG with data to be sent, and a buffer size corresponding to the identity and / or the priority of the LCH; or

[0024] an identity and / or a priority of a logical channel (LCH) in the logical channel group (LCG) with data to be sent, and a remaining time and a buffer size corresponding to the identity and / or the priority of the LCH; or

[0025] a remaining time and a buffer size of a logical channel group (LCG) configured for the terminal device or a remaining time and a buffer size of a logical channel group (LCG) configured with data to be sent.

[0026] According to still another aspect of the embodiments of the present application, a device for reporting a delay status report is provided, configured in a terminal device, and the device comprises:

[0027] a sending unit, when the second condition is met, the reporting unit reports a DSR, and the DSR comprises one of the following:

[0028] a remaining time and a buffer size of a logical channel group (LCG) configured for the terminal device or a remaining time and a buffer size of a logical channel group (LCG) configured with data to be sent; or

[0029] a remaining time of a logical channel group (LCG), an identity and / or a priority of a logical channel (LCH) in the LCG with data to be sent, and a buffer size corresponding to the identity and / or the priority of the LCH; or

[0030] an identity and / or a priority of a logical channel (LCH) in the logical channel group (LCG) with data to be sent, and a remaining time and a buffer size corresponding to the identity and / or the priority of the LCH; or

[0031] a remaining time and a buffer size of a logical channel group (LCG) configured for the terminal device or a remaining time and a buffer size of a logical channel group (LCG) configured with data to be sent.

[0032] One of the beneficial effects of the embodiments of the present application is that, according to the embodiments of the present application, in the case where the network device configures two priorities for at least one second logical channel, the terminal device reports the first BSR according to the first priority, or reports the first BSR according to the second priority, or determines according to which priority to report the first BSR according to the indication, or determines according to which priority to report the first BSR according to whether the logical channel has delay urgent data, in the case where the first condition is met, or reports the above-mentioned DSR in the case where the second condition is met, the DSR includes more fine-grained remaining time and / or BS information, thereby helping the network device to understand the buffer status of the UE, so as to timely allocate appropriate uplink resources to meet the QoS requirements of the XR service of the UE.

[0033] Specific embodiments of the application are disclosed herein, and represented in the accompanying drawings, indicating the principles of the application can be employed. It should be understood that the embodiments of the application are not limited in scope so as to encompass many changes, modifications, and equivalents within the spirit and scope of the appended claims.

[0034] Features described and / or illustrated with respect to one implementation can be used in the same or similar manner in one or more other implementations, in combination with other features in the other implementations, or in place of other features in the other implementations.

[0035] It should be emphasized that the term "comprises / comprising" when used in this text is taken to mean the presence of stated features, integers, steps or components, but not to the exclusion of one or more other features, integers, steps or components, or groups thereof. BRIEF DESCRIPTION OF DRAWINGS

[0036] Elements and features depicted in one drawing or implementation of an embodiment of the present application can be combined with elements and features depicted in one or more other drawings or implementations. Also, in the drawings, like reference numerals designate corresponding parts throughout the several views, and can be used to indicate corresponding parts in more than one implementation.

[0037] FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

[0038] FIG. 2 is a schematic diagram of a format of a long truncated BSR (Long Tuncated BSR);

[0039] FIG. 3 is a schematic diagram of a padding buffer status report (padding BSR) reporting method according to an embodiment of the present application

[0040] Figure 4 is a schematic diagram of the highest priority LCH having no delay-critical data to transmit;

[0041] Figure 5 is a schematic diagram of the highest priority LCH having delay-critical data to transmit;

[0042] Figure 6 is a schematic diagram of the highest priority LCH having no delay-critical data to transmit;

[0043] Figure 7 is a schematic diagram of the highest priority LCH having delay-critical data to transmit;

[0044] Figure 8 is a schematic diagram of the highest priority LCH having no delay-critical data to transmit;

[0045] Figure 9 is a schematic diagram of the highest priority LCH having delay-critical data to transmit;

[0046] Figure 10 is a schematic diagram of a configuration method of padding BSR according to an embodiment of the present application;

[0047] Figure 11 is a schematic diagram of a current delay status report medium access control control element (DSR MAC CE) format;

[0048] Figure 12 is a schematic diagram of an example of buffer status;

[0049] Figure 13 is a schematic diagram of a reporting method of delay status report (DSR) according to an embodiment of the present application;

[0050] Figure 14 is a schematic diagram of an LCG having delay-critical data to transmit in delay status report (DSR);

[0051] Figure 15 is a schematic diagram of an LCG having delay-critical data and non-delay-critical data to transmit in delay status report (DSR);

[0052] Figure 16 is a schematic diagram of a reporting device of padding BSR according to an embodiment of the present application;

[0053] Figure 17 is a schematic diagram of a configuration device of padding BSR according to an embodiment of the present application;

[0054] Figure 18 is a schematic diagram of a reporting device of delay status report (DSR) according to an embodiment of the present application;

[0055] FIG. 19 is a schematic diagram of a terminal device according to an embodiment of the present application;

[0056] FIG. 20 is a schematic diagram of a network device according to an embodiment of the present application. DETAILED DESCRIPTION

[0057] The foregoing and other features of the present application will become more apparent from the following description and accompanying drawings. In the description and drawings, particular embodiments of the present application are disclosed in connection with specific details, in order to provide a thorough understanding of the principles of the present application. It will be evident, however, to one skilled in the art that the present application can be practiced without these specific details. In other instances, well-known structures and functions are not described in detail in order to avoid obscuring the concepts of the present application.

[0058] In the embodiments of the present application, the terms "first", "second", and the like are used to distinguish different elements from each other, but do not indicate spatial arrangement or time sequence of the elements, and the elements should not be limited by these terms. The term "and / or" includes any one and all combinations of the associated listed terms. The terms "comprise", "include", "have", and the like, refer to the presence of the stated features, elements, elements, or components, but do not exclude the presence or addition of one or more other features, elements, elements, or components.

[0059] In the embodiments of the present application, the singular form "a", "an", and the like include the plural form, should be understood broadly as "one" or "a kind of", and not limited to the meaning of "one"; in addition, the term "said" should be understood as including both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least partially according to", and the term "based on" should be understood as "at least partially based on", unless the context clearly indicates otherwise.

[0060] In the embodiments of the present application, the term "communication network" or "wireless communication network" can refer to a network that conforms to any communication standard, such as Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), and the like.

[0061] Also, communication between devices in a communication system can be in accordance with communication protocols of any stage, for example, can include but are not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, 5G, New Radio (NR), and 6G, etc., and / or other currently known or to be developed communication protocols.

[0062] In embodiments of the present application, the term "network device" refers to, for example, a device that accesses a terminal device to a communication network and provides services for the terminal device in a communication system. The network device can include but is not limited to the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0063] The base station can include but is not limited to: node B (NodeB or NB), evolved node B (eNodeB or eNB), 5G base station (gNB), and future 6G base station, etc., in addition to remote radio head (RRH), remote radio unit (RRU), relay or low power node (such as femto, pico, etc.), IAB (Integrated Access and Backhaul) node or IAB-DU or IAB-donor. Also, the term "base station" can include some or all functions thereof, and each base station can provide communication coverage for a specific geographic area. The term "cell" can refer to a base station and / or its coverage area, depending on the context in which the term is used. The terms "cell" and "base station" can be used interchangeably, without causing confusion.

[0064] In the embodiments of the present application, the term "user equipment" (UE, User Equipment) or "terminal equipment" (TE, Terminal Equipment or Terminal Device) refers to a device that accesses a communication network through a network device and receives network services, for example. The terminal equipment can be fixed or mobile, and can also be referred to as a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), an IAB-MT (Mobile Terminal), a station (station), and the like.

[0065] The terminal equipment can include, but is not limited to, the following devices: a cellular phone, a personal digital assistant (PDA, Personal Digital Assistant), a wireless modem, a wireless communication device, a handheld device, a machine type communication device, a laptop computer, a cordless phone, a smart phone, a smart watch, a digital camera, a wearable device, a game device, an XR device, and the like.

[0066] For another example, in an Internet of Things (IoT, Internet of Things) scenario or the like, the terminal equipment can also be a machine or device that performs monitoring or measurement, and can include, but is not limited to, the following devices: a machine type communication (MTC, Machine Type Communication) terminal, a vehicle-mounted communication terminal, a device-to-device (D2D, Device to Device) terminal, a machine-to-machine (M2M, Machine to Machine) terminal, a terminal device supporting XR services, and the like.

[0067] In addition, the term "network side" or "network device side" refers to the side of the network, which can be a certain base station, or can include one or more network devices as described above. The term "user side" or "terminal side" or "terminal equipment side" refers to the side of the user or terminal, which can be a certain UE, or can include one or more terminal devices as described above. In this document, "device" can refer to a network device or a terminal device unless otherwise specified.

[0068] The following describes the scenarios of the embodiments of the present application by way of examples, but the present application is not limited thereto.

[0069] FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, which schematically illustrates a case taking a terminal device and a network device as examples. As shown in FIG. 1, the communication system 100 can include a network device 101 and terminal devices 102 and 103. For simplicity, FIG. 1 illustrates only two terminal devices and one network device as examples, but embodiments of the present application are not limited thereto.

[0070] In embodiments of the present application, the network device 101 and the terminal devices 102 and 103 can perform existing services or future implementable services transmission. For example, these services can include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), ultra-reliable and low-latency communication (URLLC), and XR services, etc.

[0071] Among them, the terminal device 102 can send data to the network device 101, for example, using an uplink grant or a configured uplink grant transmission mode. The network device 101 can receive data sent by one or more terminal devices 102, and feed back information or downlink control information to the terminal device 102, such as acknowledgement ACK / non-acknowledgement NACK information or downlink control information for scheduling new transmission or retransmission, etc., and the terminal device 102 can confirm the end of the transmission process according to the feedback information or downlink control information, or can also perform new data transmission, or can perform data retransmission.

[0072] It is worth noting that FIG. 1 shows that both terminal devices 102 and 103 are within the coverage of the network device 101, but the present application is not limited thereto. Both terminal devices 102 and 103 can be outside the coverage of the network device 101, or one terminal device 102 is within the coverage of the network device 101 and the other terminal device 103 is outside the coverage of the network device 101.

[0073] In the MAC (Media Access Control) specification (TS 38.321), there is the following description about padding buffer status report (padding BSR):

[0074] That is, in a case where the number of padding bits is greater than the size of the short BSR plus its subheader but less than the size of the long BSR plus its subheader, if more than one LCG (Logical Channel Group) has data available for transmission when the BSR is to be built, the MAC entity of the user equipment (UE) reports a long truncated BSR, wherein the buffer size of the LCGs is reported in decreasing order of the priority of the highest priority logical channel (with or without data available for transmission) in the LCGs that have data available for transmission, and in case of the same priority, in ascending order of the LCG ID (Logical Channel Group ID).

[0075] FIG. 2 is a schematic diagram of the format of a long truncated BSR (Long Tuncated BSR) MAC control element (CE), and in the MAC specification, the content (i.e., the fields included therein) of the BSR MAC CE is described as follows:

[0076] The embodiments of the present application will be described below in conjunction with the accompanying drawings and specific embodiments.

[0077] In the embodiments of the present application, "reporting" means that the terminal device sends information to the network device, and "reporting" can be replaced by "reporting" or "indicating" or "sending" and the like.

[0078] In the embodiments of the present application, the logical channel group (LCG) has data available for transmission, which can also be referred to as: the logical channel group has data available for transmission, or the logical channel group has buffered data. The buffered data can be replaced by data available for transmission (or pending data).

[0079] In the embodiments of the present application, "waiting", "available for transmission", and "buffered" have the same meaning and can be replaced by each other.

[0080] In the embodiments of the present application, multiple or more than one means at least two, or two or more.

[0081] In embodiments of the present application, configuration / indication refers to direct or indirect configuration / indication by the network device through high-layer signaling and / or physical-layer signaling. Configuration / indication can be introduced in high-layer signaling through high-layer parameters, which refer to information fields and / or information elements / units / members (IEs) in high-layer signaling. Physical-layer signaling refers to control information (DCI, Downlink Control Information) carried by a physical downlink control channel or sequence, but is not limited thereto.

[0082] In embodiments of the present application, if the logical channels included in a logical channel group are configured with one priority, the highest priority corresponding to the logical channel group refers to the priority of the logical channel with the highest priority value among the logical channels included in the logical channel group; if the logical channels included in a logical channel group are configured with two priorities (i.e., a first priority and a second priority), the highest priority corresponding to the logical channel group refers to the priority of the logical channel with the highest second priority value among the logical channels included in the logical channel group.

[0083] In the following description, “if”, “in the case of” and “when” can be used interchangeably without causing confusion.

[0084] Embodiments of the first aspect

[0085] The embodiments of the present application provide a reporting method of padding BSR (Buffer Status Report), which is described from the side of a terminal device, i.e., a UE.

[0086] FIG. 3 is a schematic diagram of a reporting method of padding BSR (Buffer Status Report) according to an embodiment of the present application. As shown in FIG. 3, the method comprises the following steps.

[0087] 301: In the case where the network device configures at least one second logical channel with a first priority and a second priority, when a first condition is met, the terminal device reports a first BSR according to the first priority or the second priority.

[0088] It is worth noting that the above FIG. 3 only schematically describes the embodiments of the present application, but the present application is not limited thereto. For example, some other operations can be added or some operations can be reduced. Those skilled in the art can make appropriate modifications according to the above description, and the present application is not limited to the description of the above FIG. 3.

[0089] According to the above embodiments, it is helpful for the UE to determine which LCG buffer size to report in a long truncated BSR, so that the network side and the UE side have a consistent understanding of the buffer size reported in the padding BSR, thereby avoiding the network device from allocating inappropriate uplink resources to cause the QoS of the UE's service to be unable to be guaranteed.

[0090] In the above embodiments, the first priority refers to the priority configured by the network device for the logical channel, which can also be referred to as an existing priority or a legacy priority, and a higher priority value indicates a lower priority. The second priority is a priority configured by the network device for a logical channel that can have delay-critical data. Delay-critical data refers to data with a remaining time less than a threshold, and the remaining time refers to the shortest remaining value of a running PDCP discardTimer in a PDCP SDU buffered in an LCG. A logical channel can sometimes have delay-critical data and sometimes not have delay-critical data. In the above embodiments, a logical channel configured only with the first priority is referred to as a first logical channel, and a logical channel configured with both the first priority and the second priority is referred to as a second logical channel. A logical channel group (LCG) can include only first logical channels, only second logical channels, or both first logical channels and second logical channels. In addition, a first logical channel can have or not have delay-critical data, and a second logical channel can have or not have delay-critical data.

[0091] In some embodiments, in the case that the second logical channel has delay-critical data to be sent, the terminal device can use the second priority for the second logical channel in the LCP process, so that the delay-critical data in the second logical channel can be sent to the network device as soon as possible to meet the delay requirement of the delay-critical data in the second channel.

[0092] In some embodiments, the first condition is that the number of padding bits is greater than the size of the short BSR plus its subheader but less than the size of the long BSR plus its subheader, and more than one LCG has data to be sent when the BSR is to be constructed; and the first BSR is a long truncated BSR.

[0093] According to the above embodiments, in the case that the number of padding bits is greater than the size of the short BSR plus its subheader but less than the size of the long BSR plus its subheader, if more than one LCG has data to be transmitted when the BSR is to be constructed, the terminal device reports the long truncated BSR according to the first priority or the second priority. Thus, the UE can determine which LCG's buffer size to report in the long truncated BSR, so that the network side and the UE side have a consistent understanding of the buffer size reported in the padding BSR, avoiding the network device allocating inappropriate uplink resources to cause the QoS of the UE's service to be unable to be guaranteed.

[0094] In some embodiments, for one or more logical channel groups (LCGs) having data to be transmitted, the terminal device reports the first BSR according to the first priority, regardless of whether the LCG includes the second logical channel.

[0095] For example, in the first BSR, the terminal device reports the buffer size of the LCG in descending order of the priority of the highest priority logical channel in the LCG having data to be transmitted, and in ascending order of the LCG identifier (ID) in the case of the same priority; wherein the highest priority logical channel has data or has no data to be transmitted, and the priority is the first priority.

[0096] In the above example, the first priority of the logical channel is predefined or specified in the above-mentioned MAC protocol, for example, and the modification of the protocol is as follows:

[0097] In the above example, priority 2 refers to the second priority (hereinafter the same).

[0098] The following will list two cases for illustration, wherein it is assumed that the padding bit is 4 bytes, the size of the short BSR plus its subheader is 2 bytes (including 1 byte of subheader and 1 byte of short BSR MAC CE), the number of padding bits (4 bytes) is greater than the size of the short BSR plus its subheader (2 bytes) and less than the size of the long BSR plus its subheader (5 bytes, wherein the long BSR MAC CE is 3 bytes and its subheader is 2 bytes), and more than one LCG has data to be sent when the BSR is to be constructed, then the terminal device will report a long truncated BSR, the length of the long truncated BSR (MAC CE) is 2 bytes (i.e. 4 bytes of padding bits minus 2 bytes of the subheader length of the long truncated BSR). In this long truncated BSR MAC CE, the first byte indicates the logical channel group that has data to be sent, and the BS of the LCG will be included in the next byte (the second byte). Since only one byte is used to report the BS of the LCG and one BS field is 8 bits (i.e. 1 byte) in length, the terminal device can only report the BS corresponding to one LCG.

[0099] In FIGS. 4 and 5, LCH X(y) represents that the logical channel of LCH ID X is configured with a first priority y, and LCH X(y, z) represents that the logical channel of LCH ID X is configured with a first priority y and a second priority z.

[0100] FIG. 4 is a schematic diagram in which the LCH with the highest priority has no delay-critical data to be sent.

[0101] As shown in FIG. 4, in this example, the LCG configured with LCG ID 1 (referred to as LCG1 for short) includes three logical channels, LCH1, LCH2, and LCH3, wherein LCH1 has no data to be sent and is configured with one priority, i.e. a first priority 2, LCH2 and LCH3 have non-delay-critical data to be sent and are configured with one priority, i.e. a first priority 3 and 5, respectively; the LCG configured with LCG ID 2 (referred to as LCG2 for short) includes three logical channels, LCH4, LCH5, and LCH6, wherein LCH4 has non-delay-critical data to be sent and is configured with two priorities, i.e. a first priority 2 and a second priority 1, LCH5 has no data to be sent and is configured with two priorities, i.e. a first priority 4 and a second priority 2, and LCH6 has delay-critical data to be sent and is configured with two priorities, i.e. a first priority 5 and a second priority 3.

[0102] In the reported long truncated BSR MAC CE, the LCG1 (LCG ID1) field and the LCG2 (LCG ID2) field in the first byte are indicated as 1. As for which LCG is included in the second byte: among the LCs that have data to be sent (i.e., LCG1 and LCG2), the highest priority logical channel is determined according to the first priority of the logical channel (regardless of whether it has data), in the above case, the highest priority (or first priority) logical channel is LCH1 and LCH4, whose priority (or first priority) is equal, both being 2, then the BS is reported in ascending order of the ID of the LCG, that is, as shown on the lower side of FIG. 4, in the padding BSR (first BSR), the Buffer Size (BS) of LCG1 after LCG ID sorting is reported.

[0103] FIG. 5 is a schematic diagram of the highest priority LCH having delay-critical data to be sent.

[0104] As shown in FIG. 5, in this example, the difference from the example of FIG. 4 is that at this time, there is delay-critical data to be sent in the highest priority logical channel (LCH4) in LCG2, and in addition, as shown in FIG. 5, although LCH4 is configured with a second priority, in the above embodiment, the reporting is according to the first priority, since the priority (first priority) of LCH1 and LCH4 is equal, both being 2, at this time, the BS is reported in ascending order of the ID of the LCG, that is, as shown on the lower side of FIG. 5, in the padding BSR (first BSR), the Buffer Size of LCG1 after LCG ID sorting is reported.

[0105] In the above two examples, the terminal device reports the BS of the LCG of LCG ID 1 in the long truncated BSR.

[0106] In other embodiments, for one or more LCs that have data to be sent, in the case where these LCs include at least one second logical channel (i.e., in the case where at least one logical channel included in the LCG has delay-critical data, or in the case where at least one logical channel is configured with a first priority and a second priority), the terminal device reports the first BSR according to the second priority.

[0107] For example, in the first BSR, the terminal device reports the buffer size of the LCGs in descending order of the priority of the highest priority logical channel in the LCGs in which the logical channel has data to be sent, and in ascending order of the LCG identifier in the case of the same priority; wherein the highest priority logical channel has data or has no data to be sent, and for the second logical channel in these LCGs, the priority is the second priority of the second logical channel, and / or for the first logical channel in these LCGs which is not configured with the second priority, the priority is the first priority of the first logical channel.

[0108] In the above example, the second priority of the logical channel is predefined or specified in the MAC protocol, for example, as follows:

[0109] The following will list two cases for illustration, assuming that the padding bit is 4 bytes, the size of the short BSR plus its subheader is 2 bytes (including 1 byte of subheader and 1 byte of short BSR MAC CE), the number of padding bits is greater than the size of the short BSR plus its subheader (2 bytes) and less than the size of the long BSR plus its subheader (5 bytes, wherein the long BSR MAC CE is 3 bytes and its subheader is 2 bytes), and more than one LCG has data to be sent when the BSR is to be constructed, then the terminal device will report a long truncated BSR, the length of the long truncated BSR (MAC CE) is 2 bytes (i.e. 4 bytes of padding bits minus 2 bytes of the subheader length of the long truncated BSR). In this long truncated BSR MAC CE, the first byte indicates the logical channel group that has data to be sent, and the next byte (second byte) will include the BS of the LCG. Since only one byte is used to report the BS of the LCG and one BS field is 8 bits (i.e. 1 byte) in length, the terminal device can only report the BS corresponding to one LCG.

[0110] In FIGS. 6 and 7, LCH X(y) represents that the logical channel of LCH ID X is configured with the first priority y, and LCH X(y, z) represents that the logical channel of LCH ID X is configured with the first priority y and the second priority z.

[0111] FIG. 6 is a schematic diagram in which the highest priority LCH has no delay-critical data to be sent.

[0112] As shown in FIG. 6, in this example, the LCG configured with LCG ID 1 (LCG1 for short) includes three logical channels, LCH1, LCH2, and LCH3, where LCH1 has no data to be sent and is configured with one priority, i.e., the first priority 2, LCH2 and LCH3 have non-delay-critical emergency data to be sent and are configured with one priority, i.e., the first priority 3 and 5, respectively; the LCG configured with LCG ID 2 (LCG2 for short) includes three logical channels, LCH4, LCH5, and LCH6, where LCH4 has non-delay-critical emergency data to be sent and is configured with two priorities, i.e., the first priority 2 and the second priority 1, respectively; LCH5 has no data to be sent and is configured with two priorities, i.e., the first priority 4 and the second priority 2, respectively; and LCH6 has delay-critical emergency data to be sent and is configured with two priorities, i.e., the first priority 5 and the second priority 3, respectively.

[0113] In the reported long-padded BSR MAC CE, the LCG1 (LCG ID 1) field and the LCG2 (LCG ID 2) field in the first byte are indicated as 1. As for which LCG is included in the second byte: among the LCGs that have data to be sent (i.e., LCG1 and LCG2), the logical channel with the highest priority (the second priority) is LCH4, which has the second priority 1, and thus the LCG2 corresponding to LCH4 is reported, i.e., as shown in the lower part of FIG. 6, the Buffer Size (BS) of LCG2 is reported in the padding BSR (the first BSR).

[0114] FIG. 7 is a diagram of an example where the logical channel with the highest priority has delay-critical data to be sent.

[0115] As shown in FIG. 7, in this example, similar to the example of FIG. 6, the logical channel with the highest priority (the second priority) is LCH4, which has the second priority 1, and thus, as shown in the lower part of FIG. 7, the Buffer Size of LCG2 is reported in the padding BSR (the first BSR). Different from the example shown in FIG. 6, in the example of FIG. 7, the logical channel (LCH4) with the highest priority in the LCG ID 2 has delay-critical data to be sent.

[0116] In the above two examples, the terminal device reports the BS of the LCG with LCG ID 2 in the long-padded BSR.

[0117] In yet some embodiments, the terminal device reports the first BSR according to the first priority or according to the second priority according to an indication from the network device. That is, the network device configures or indicates which priority to use for the UE.

[0118] For example, the terminal device receives indication information from the network device, the indication information configures or indicates the terminal device to report the first BSR according to the first priority or the second priority of the second logical channel in the case that the LCG has data to be sent and the LCG includes at least one second logical channel (i.e. in the case that at least one logical channel included in the LCG has delay emergency data, or in the case that at least one logical channel is configured with the first priority and the second priority).

[0119] In the above embodiments, the indication information can be contained in an RRC message, for example, in at least one of the following messages: RRC setup, RRC reconfiguration, RRC re-establishment, RRC resume. For example, the network device can configure the UE to report the padding BSR according to whether the priority of the logical channel is the first priority or the second priority in the RRC setup, RRC reconfiguration, RRC re-establishment, RRC resume, etc. message.

[0120] In some possible implementation manners, the above indication information is configured or indicated for the configured logical channel or the configured second logical channel of the terminal device.

[0121] For example, the indication information is contained in the IE BSR-Config, i.e. the network device can configure or indicate all the logical channels configured for the UE or all the logical channels configured with the second priority (second logical channel) in the IE BSR-Config. The modification of the RRC (Radio Resource Control) standard is as follows:

[0122] In some other possible implementation manners, the indication information is configured or indicated for each logical channel or each logical channel group configured for the terminal device or for each second logical channel or each logical channel group including the second logical channel configured for the terminal device respectively.

[0123] For example, the indication information is contained in the IE LogicalChannelConfig, i.e. the network device can configure each logical channel (group) configured for the UE or each logical channel (group) configured with the second priority for the UE respectively, for example, the logical channel is configured in the IE LogicalChannelConfig. The modification of the RRC standard is as follows:

[0124] In yet some possible implementation manners, the indication information indicates or configures the logical channel used by the terminal device for the next first BSR reporting.

[0125] For example, the indication information is contained in a MAC CE (MAC Control Element) or a DCI (Downlink Control Information). For example, the network can indicate, through the MAC CE and / or the DCI, whether the logical channel used by the UE for the next padding BSR reporting has the first priority or the second priority.

[0126] In yet some embodiments, for the LCGs having data to be sent, the terminal device reports the first BSR according to the first priority or the second priority of the second logical channel in the LCG according to whether the second logical channel has delay-sensitive emergency data.

[0127] For example, in the case that the second logical channel in the LCG has delay-sensitive emergency data, the terminal device reports the first BSR according to the second priority of the second logical channel, otherwise, the terminal device reports the first BSR according to the first priority of the second logical channel.

[0128] The following will list two cases for illustration, where it is assumed that the padding bit is 4 bytes, the size of the short BSR plus its subheader is 2 bytes (including 1 byte of subheader and 1 byte of short BSR MAC CE), the number of padding bits is greater than the size of the short BSR plus its subheader (2 bytes) and less than the size of the long BSR plus its subheader (5 bytes, where the long BSR MAC CE is 3 bytes and its subheader is 2 bytes), and when the BSR is to be constructed, it is assumed that more than one LCG has data to be sent, then the terminal device will report a long truncated BSR, the length of the long truncated BSR (MAC CE) is 2 bytes (i.e. 4 bytes of padding bits minus 2 bytes of the subheader length of the long truncated BSR). In this long truncated BSR MAC CE, the first byte indicates the logical channel group having data to be sent, and in the next byte (the second byte), the BS of the LCG will be included, since only one byte is used to report the BS of the LCG and the length of one BS field is 8 bits (i.e. 1 byte), therefore the terminal device can only report the BS corresponding to one LCG.

[0129] In FIGS. 8 and 9, LCHX(y) represents that the logical channel of LCH ID X is configured with the first priority y, and LCHX(y, z) represents that the logical channel of LCH ID X is configured with the first priority y and the second priority z.

[0130] Figure 8 is a schematic diagram of the highest priority LCH having no delay-critical data to transmit.

[0131] As shown in Figure 8, in this example, the LCG configured with LCG ID 1 (referred to as LCG1) includes three logical channels, LCH1, LCH2, and LCH3, where LCH1 has no data to transmit and is configured with a priority, i.e., a first priority of 2, LCH2 and LCH3 have non-delay-critical data to transmit and are configured with a priority, i.e., a first priority of 3 and 5, respectively; the LCG configured with LCG ID 2 (referred to as LCG2) includes three logical channels, LCH4, LCH5, and LCH6, where LCH4 has non-delay-critical data to transmit and is configured with two priorities, i.e., a first priority of 2 and a second priority of 1, according to which first priority value 2 to determine whether it is the highest priority logical channel, LCH5 has no data to transmit and is configured with two priorities, i.e., a first priority of 4 and a second priority of 2, according to which first priority value 4 to determine whether it is the highest priority logical channel, and LCH6 has delay-critical data to transmit and is configured with two priorities, i.e., a first priority of 5 and a second priority of 3, according to which second priority value 3 to determine whether it is the highest priority logical channel.

[0132] In the reported long truncated BSR MAC CE, the LCG1 (LCG ID 1) field and the LCG2 (LCG ID 2) field in the first byte are indicated as 1. As for which LCG to include in the second byte: among the LCGs that have data to transmit (i.e., LCG1 and LCG2), the highest priority logical channel is determined according to the first priority or the second priority of the logical channels, in the above case, the highest priority logical channels are LCH1 and LCH4, both with a priority value of 2, since the priority values of the highest priority logical channels in the two LCGs are the same, the LCG IDs are sorted in ascending order, and the UE reports the Buffer Size of the LCG with LCG ID 1 in the padding BSR.

[0133] Figure 9 is a schematic diagram of the highest priority LCH having delay-critical data to transmit.

[0134] As shown in Figure 9, in this example, different from the example of Figure 8, there is delay-critical data to transmit in LCH4, so the second priority is used, with a priority value of 1, i.e., among the LCGs that have data to transmit (i.e., LCG1 and LCG2), the highest priority logical channel is LCH4, therefore, the UE reports the BS of the LCG with LCG ID 2 in the padding BSR.

[0135] In the above various embodiments, the network device can determine which LCGs' BSs are included in the long truncated BSR using the same method as the UE side, and in addition, for the last embodiment, the network device can also determine which LCG has delay urgent data to be sent in the terminal device according to the delay status report reported by the terminal device, so as to obtain the descending order of the logical channels with the highest priority. Therefore, the network device can have a consistent understanding with the UE.

[0136] The above various embodiments only exemplarily illustrate the embodiments of the present application, but the present application is not limited thereto, and can be appropriately modified on the basis of the above various embodiments. For example, the above various embodiments can be used alone, or one or more of the above various embodiments can be combined.

[0137] According to the method of the embodiments of the present application, the UE can determine which LCG's buffer size to report in the long truncated BSR, so that the network side and the UE side have a consistent understanding of the buffer size reported in the padding BSR, thereby avoiding the network device from allocating inappropriate uplink resources to cause the QoS of the UE's service to be unable to be guaranteed.

[0138] Embodiments of the second aspect

[0139] The embodiments of the present application provide a configuration method of padding buffer status report (padding BSR), which is described from the side of the network device. The same content as the embodiments of the first aspect is not repeated.

[0140] FIG. 10 is a schematic diagram of the configuration method of padding buffer status report (padding BSR) according to the embodiments of the present application. As shown in FIG. 10, the method comprises:

[0141] 1001, the network device sends indication information to the terminal device, which configures or indicates whether the terminal device reports the first BSR according to the first priority or using the second priority; wherein the network device configures the first priority and the second priority for at least one second logical channel.

[0142] In some embodiments, the indication information is contained in the RRC message, for example, in at least one of the following messages: RRC setup, RRC reconfiguration, RRC re-establishment, RRC resume.

[0143] In some embodiments, the indication information is configured or indicated for the configured logical channel or the configured second logical channel of the terminal device.

[0144] In the above embodiments, the indication information is contained in, for example, IE BSR-Config.

[0145] In some embodiments, the indication information is configured or indicated respectively for each logical channel or each logical channel group configured for the terminal device, or each second logical channel or each logical channel group including the second logical channel configured for the terminal device.

[0146] In the above embodiments, the indication information is contained in, for example, IE LogicalChannelConfig.

[0147] In some embodiments, the indication information is configured or indicated for the logical channel used by the terminal device for the next time of performing the first BSR reporting.

[0148] In the above embodiments, the indication information is contained in, for example, MAC CE or DCI.

[0149] In some embodiments, as shown in FIG. 10, the method further includes:

[0150] 1002, the network device receives the first BSR and the DSR;

[0151] 1003, the network device determines which buffer size of which LCG is included in the first BSR according to the DSR.

[0152] The above embodiments are only exemplarily described, but the present application is not limited thereto, and can be appropriately modified on the basis of the above embodiments. For example, the above embodiments can be used alone or in combination of one or more of the above embodiments.

[0153] According to the method of the embodiments of the present application, through the configuration or indication of the network device, the UE can determine which buffer size of which LCG is reported in the long truncated BSR, so that the network side and the UE side have consistent understanding of the buffer size reported in the padding BSR, and then avoid the situation that the network device allocates unsuitable uplink resources to cause the QoS of the service of the UE cannot be guaranteed.

[0154] Embodiments of the third aspect

[0155] In 3GPP, there are the following agreements on delay status reporting (DSR):

[0156] FIG. 11 is a schematic diagram of a current delay status reporting medium access control control element (DSR MAC CE) format.

[0157] As shown in FIG. 11, R represents reserved bits. At present, only one pair of remaining time and buffer size is reported for one LCG.

[0158] The format of the DSR MAC CE is described as follows:

[0159] FIG. 12 is a schematic diagram of one example of buffer status.

[0160] As shown in FIG. 12, the UE is configured with two logical channel groups, identified as LCG ID1 and LCG ID2. The LCG of LCG ID1 includes LCH1 (priority P1, buffer size BS1) and LCH2 (priority P2, buffer size BS2), and the LCG of LCG ID2 includes LCH3 (priority P4, buffer size BS3), LCH4 (priority P3 and P5, buffer size BS4a for delay-critical data, buffer size BS4b for non-delay-critical data), and LCH5 (priority P6, buffer size BS5).

[0161] The inventors have found that how to report multiple pairs of remaining time and buffer size for one LCG to include more granular remaining time and / or BS information in the reported DSR is one of the subjects of the research.

[0162] To solve the above problem or other similar problems, the embodiments of the present application provide a reporting method of delay status report (DSR). The description is made from the side of the terminal device.

[0163] FIG. 13 is a schematic diagram of the reporting method of delay status report (DSR) according to the embodiments of the present application. As shown in FIG. 13, the method includes:

[0164] 1301, when the second condition is met, the terminal device reports a DSR, and the DSR includes one of the following:

[0165] the remaining time and buffer size of the logical channel group (LCG), and the identifier and / or priority of the logical channel (LCH) in the LCG that has data to be sent; or

[0166] a remaining time of a logical channel group (LCG), an identity and / or priority of a logical channel (LCH) in the LCG having data to be transmitted, and a buffer size corresponding to the identity and / or priority of the LCH; or

[0167] an identity and / or priority of a logical channel (LCH) in a logical channel group (LCG) having data to be transmitted, and a remaining time and a buffer size corresponding to the identity and / or priority of the LCH; or

[0168] a configured LCG of the terminal device or a remaining time and a buffer size of a configured LCG having data to be transmitted.

[0169] In the above embodiments, the data refers to delay-critical data or delay-critical data and non-delay-critical data.

[0170] In the above embodiments, the logical channel group refers to a logical channel group having delay-critical data or a logical channel group having delay-critical data and non-delay-critical data.

[0171] FIG. 14 is a schematic diagram of an LCG having delay-critical data to be transmitted in a delay status report (DSR).

[0172] In some embodiments, the DSR includes a remaining time and a buffer size of an LCG, and further includes an identity of a LCH in the LCG having data to be transmitted and / or a priority of the LCH.

[0173] As shown in (a) of FIG. 14, for the LCG having delay-critical data to be transmitted, i.e., the LCG of LCG ID2, in some possible implementations, the DSR includes a remaining time (RT4) and a buffer size (BS = BS4a + BS5) of the LCG, and further includes an identity (LCH4, LCH5) of a LCH in the LCG having data to be transmitted and / or a priority (P3, P6) of the LCH. For example, the DSR includes RT4, BS = BS4a + BS5, LCH4, LCH5, or includes RT4, BS = BS4a + BS5, P3, P6.

[0174] In other embodiments, the DSR includes a remaining time of an LCG, and further includes an identity and / or priority of a LCH in the LCG having data to be transmitted, and a buffer size corresponding to the identity and / or priority of the LCH.

[0175] As shown in Figure 14(b), for the LCG with delay-critical data to be transmitted, i.e. the LCG with LCG ID 2, in some possible implementation, the DSR includes the remaining time (RT4) of the LCG, in addition to the identification of the LCHs with data to be transmitted in the LCG (LCH4, LCH5) and / or the priority of the LCHs (P3, P6), and the buffer size corresponding to the identification of the LCHs (LCH4, LCH5) and / or the priority of the LCHs (P3, P6) (BS4a, BS5). For example, the DSR includes RT4, LCH4+BS4a, LCH5+BS5, or RT4, P3+BS4a, P6+BS5.

[0176] In yet some embodiments, the DSR includes the identification and / or the priority of the LCHs with data to be transmitted in the LCG, and the remaining time and the buffer size corresponding to the identification and / or the priority of the LCHs.

[0177] As shown in Figure 14(c), for the LCG with delay-critical data to be transmitted, i.e. the LCG with LCG ID 2, in yet some possible implementation, the DSR includes the identification of the LCHs with data to be transmitted in the LCG (LCH4, LCH5) and / or the priority of the LCHs (P3, P6), and the remaining time (RT4, RT5) and the buffer size (BS4a, BS5) corresponding to the identification of the LCHs (LCH4, LCH5) and / or the priority of the LCHs (P3, P6). For example, the DSR includes LCH4+RT4+BS4a, LCH5+RT5+BS5, or P3+RT4+BS4a, P6+RT5+BS5.

[0178] Figure 15 is a schematic diagram of an LCG with delay-critical data and non-delay-critical data to be transmitted in a delay status report (DSR).

[0179] In some embodiments, the DSR includes the remaining time and the buffer size of the LCG, in addition to the identification of the LCHs with data to be transmitted in the LCG and / or the priority of the LCHs.

[0180] As shown in (a) of FIG. 15, for the LCG with non-delay-critical data to be transmitted, i.e., the LCG of LCG ID 1, in some possible implementation, the DSR includes the remaining time (RT2) and buffer size (BS2) of the LCG, and further includes the identification (LCH2) and / or priority (P2) of the LCH with data to be transmitted in the LCG. For example, the DSR includes RT2, BS2, LCH2, or includes RT2, BS2, P2.

[0181] As shown in (a) of FIG. 15, for the LCG with delay-critical data and non-delay-critical data to be transmitted, i.e., the LCG of LCG ID 2, in some possible implementation, the DSR includes the remaining time (RT4 corresponding to delay-critical data, RT3 corresponding to non-delay-critical data) and buffer size (BS=BS4a+BS5 corresponding to delay-critical data, BS=BS3+BS4b corresponding to non-delay-critical data) of the LCG, and further includes the identification (LCH4, LCH5 corresponding to delay-critical data, LCH3, LCH4 corresponding to non-delay-critical data) and / or priority (P3, P6 corresponding to delay-critical data, P4, P5 corresponding to non-delay-critical data) of the LCH with data to be transmitted in the LCG. For example, the DSR includes RT4, BS=BS4a+BS5, LCH4, LCH5 corresponding to delay-critical data, and RT3, BS=BS3+BS4b, LCH3, LCH4 corresponding to non-delay-critical data; or the DSR includes RT4, BS=BS4a+BS5, P3, P6 corresponding to delay-critical data, and RT3, BS=BS3+BS4b, P4, P5 corresponding to non-delay-critical data.

[0182] In some other embodiments, the DSR includes the remaining time of the LCG, and further includes the identification and / or priority of the LCH with data to be transmitted in the LCG, and the buffer size corresponding to the identification and / or priority of the LCH.

[0183] As shown in Figure 15(b), for the LCG with non-delay-critical data to be transmitted, i.e. the LCG of LCG ID 1, in some other possible implementation, the DSR includes the remaining time (RT2) of the LCG, in addition to the identity (LCH2) and / or priority (P2) of the LCH with data to be transmitted in the LCG, and the buffer size (BS2) corresponding to the identity (LCH2) and / or priority (P2) of the LCH. For example, the DSR includes RT2, LCH2+BS2, or RT2, P2+BS2.

[0184] As shown in Figure 15(b), for the LCG with delay-critical data and non-delay-critical data to be transmitted, i.e. the LCG of LCG ID 2, in some other possible implementation, the DSR includes the remaining time (RT4 for delay-critical data, RT3 for non-delay-critical data) of the LCG, in addition to the identity (LCH4, LCH5 for delay-critical data, LCH3, LCH4 for non-delay-critical data) and / or priority (P3, P6 for delay-critical data, P4, P5 for non-delay-critical data) of the LCH with data to be transmitted in the LCG, and the buffer size (BS4a, BS5 for delay-critical data, BS3, BS4b for non-delay-critical data) corresponding to the identity and / or priority of the LCH. For example, the DSR includes RT4, LCH4+BS4a, LCH5+BS5 for delay-critical data, and RT3, LCH3+BS3, LCH4+BS4b for non-delay-critical data, or the DSR includes RT4, P3+BS4a, P6+BS5 for delay-critical data, and RT3, P4+BS3, P6+BS4b for non-delay-critical data.

[0185] In yet some other embodiments, the DSR includes the identity and / or priority of the LCH with data to be transmitted in the LCG, and the remaining time and buffer size corresponding to the identity and / or priority of the LCH.

[0186] As shown in FIG. 15(c), for the LCG with non-delay-critical data to be transmitted, i.e. the LCG of LCG ID 1, in yet some possible implementation, the DSR includes the identity of the LCH with data to be transmitted (LCH 2) and / or the priority of the LCH (P2) in the LCG, and the remaining time (RT2) and buffer size (BS2) corresponding to the identity and / or priority of the LCH. For example, the DSR includes LCH 2+RT2+BS2, or P2+RT2+BS2.

[0187] As shown in FIG. 15(c), for the LCG with delay-critical data and non-delay-critical data to be transmitted, i.e. the LCG of LCG ID 2, in yet some possible implementation, the DSR includes the identity of the LCH with data to be transmitted (LCH 4, LCH 5 for delay-critical data, LCH 3, LCH 4 for non-delay-critical data) and / or the priority of the LCH (P3, P6 for delay-critical data, P4, P5 for non-delay-critical data) in the LCG, and the remaining time (RT4a, RT5 for delay-critical data, RT3, RT4b for non-delay-critical data) and buffer size (BS4a, BS5 for delay-critical data, BS3, BS4b for non-delay-critical data) corresponding to the identity and / or priority of the LCH. For example, the DSR includes LCH 4+RT4a+BS4a and LCH 5+RT5+BS5 for delay-critical data, and LCH 3+RT3+BS3 and LCH 4+RT4b+BS4b for non-delay-critical data, or the DSR includes P3+RT4a+BS4a and P6+RT5+BS5 for delay-critical data, and P4+RT3+BS3 and P5+RT4b+BS4b for non-delay-critical data.

[0188] In yet some embodiments, the DSR includes the remaining time and buffer size of the LCGs configured to the UE or the LCGs configured with data to be transmitted. The specific implementation is similar to the foregoing, which is not repeated here.

[0189] The above embodiments only exemplarily illustrate the embodiments of the present application, but the present application is not limited thereto, and can be appropriately modified on the basis of the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0190] According to the method of the embodiments of the present application, the UE reports the remaining time and / or BS information with finer granularity in the DSR, which helps the network device to understand the buffer status of the UE, so as to timely allocate appropriate uplink resources to meet the QoS requirements of the XR service of the UE.

[0191] Embodiments of the fourth aspect

[0192] The embodiments of the present application provide a reporting device for filling buffer status reporting. The device may, for example, be a terminal device, or one or more components or assemblies configured in the terminal device. The device of the embodiments of the present application corresponds to the method of the embodiments of the first aspect, and the same content as the embodiments of the first aspect will not be repeated.

[0193] FIG. 16 is a schematic diagram of a reporting device for filling buffer status reporting according to an embodiment of the present application. As shown in FIG. 16, the device 1600 includes:

[0194] The first sending unit 1601, in a case where the network device configures a first priority and a second priority for at least one second logical channel, when a first condition is met, reports a first BSR according to the first priority or the second priority.

[0195] In some embodiments, the first condition is that the number of padding bits is greater than the size of a short BSR plus its subheader but less than the size of a long BSR plus its subheader, and there are more than one LCGs with data to be sent when the BSR is to be constructed.

[0196] The first BSR is a long truncated BSR.

[0197] In some embodiments, the terminal device reports the first BSR according to the first priority or the second priority, including:

[0198] For one or more logical channel groups (LCGs) with data to be sent, whether the LCG includes the second logical channel or not, the terminal device reports the first BSR according to the first priority.

[0199] In some embodiments, in the first BSR, the terminal device reports buffer sizes of LCGs in descending order of priorities of logical channels with the highest priorities in the LCGs in which the logical channels with data to be sent are located, and in ascending order of LCG identifiers in the case of the same priority;

[0200] wherein the logical channel with the highest priority has data or has no data to be sent, and the priority is the first priority.

[0201] In some embodiments, the terminal device reports the first BSR according to the first priority or the second priority, including:

[0202] For one or more LCGs with data to be sent, in the case that the LCGs include at least one second logical channel, the terminal device reports the first BSR according to the second priority.

[0203] In some embodiments, in the first BSR, the terminal device reports buffer sizes of LCGs in descending order of priorities of logical channels with the highest priorities in the LCGs in which the logical channels with data to be sent are located, and in ascending order of LCG identifiers in the case of the same priority;

[0204] wherein the logical channel with the highest priority has data or has no data to be sent, and

[0205] For the second logical channel in the LCGs, the priority is the second priority of the second logical channel, and / or,

[0206] For the first logical channel in the LCGs which is not configured with the second priority, the priority is the first priority of the first logical channel.

[0207] In some embodiments, the terminal device reports the first BSR according to the first priority or the second priority, including:

[0208] The terminal device reports the first BSR according to the first priority or the second priority according to an indication from the network device.

[0209] As shown in FIG. 16, the apparatus 1600 further includes:

[0210] The first receiving unit 1602 receives indication information from the network device, the indication information configuring or indicating the terminal device to report the first BSR according to the first priority or the second priority of the second logical channel in the case that the LCG includes at least one second logical channel for the LCG with data to be sent.

[0211] In the above embodiments, the indication information is contained in an RRC message, for example, in at least one of the following messages: RRC setup, RRC reconfiguration, RRC re-establishment, RRC resume.

[0212] In some embodiments, the indication information is configured or indicated for the configured logical channel or the configured second logical channel of the terminal device.

[0213] In some embodiments, the indication information is contained in the IE BSR-Config.

[0214] In some embodiments, the indication information is configured or indicated for each logical channel or each logical channel group of the terminal device or each second logical channel or each logical channel group including the second logical channel, respectively.

[0215] In some embodiments, the indication information is contained in the IE LogicalChannelConfig.

[0216] In some embodiments, the indication information is configured or indicated for the logical channel used by the terminal device for the next first BSR reporting.

[0217] In some embodiments, the indication information is contained in a MAC CE or DCI.

[0218] In some embodiments, the terminal device reports the first BSR according to the first priority or the second priority, comprising:

[0219] For one or more than one LCG with data to be sent, the terminal device reports the first BSR according to the first priority or the second priority of the second logical channel in the LCG, depending on whether the second logical channel has delay emergency data.

[0220] In some embodiments, the terminal device reports the first BSR according to the second priority of the second logical channel if the second logical channel has emergency delay data, and otherwise according to the first priority of the second logical channel.

[0221] The content of the padding buffer status report has been described in the embodiments of the first aspect, and the content is incorporated herein, which will not be repeated here.

[0222] The above has exemplarily described the embodiments of the present application, but the present application is not limited thereto, and can be appropriately modified on the basis of the above various embodiments. For example, the above various embodiments can be used alone, or one or more of the above various embodiments can be combined.

[0223] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The device 1600 of the embodiments of the present application can also include other components or modules, and the specific content of these components or modules can be referred to the related technology. In addition, each of the above components or modules can be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc. The implementation of the present application is not limited thereto.

[0224] According to the device of the embodiments of the present application, the UE can determine which LCG buffer size to report in the long truncated BSR, so that the network side and the UE side have a consistent understanding of the buffer size reported in the padding BSR, thereby avoiding the network device allocating inappropriate uplink resources to cause the QoS of the UE service to be unable to be guaranteed.

[0225] Embodiments of the fifth aspect

[0226] The embodiments of the present application provide a configuration device for padding buffer status report. The device may, for example, be a network device, or a certain component or assembly configured in the network device. The device of the embodiments of the present application corresponds to the method of the embodiments of the second aspect, and the same content as the embodiments of the second aspect is not repeated.

[0227] FIG. 17 is a schematic diagram of a configuration device for padding buffer status report according to an embodiment of the present application. As shown in FIG. 17, the device 1700 includes:

[0228] A second sending unit 1701 sends indication information to the terminal device, which indicates whether the terminal device reports the first BSR according to the first priority or using the second priority. The network device configures the first priority and the second priority for at least one second logical channel.

[0229] In some embodiments, the indication information is contained in an RRC message, for example, in at least one of the following messages: RRC setup, RRC reconfiguration, RRC re-establishment, RRC resume.

[0230] In some embodiments, the indication information is configured or indicated for the configured logical channel or the configured second logical channel of the terminal device.

[0231] In the above embodiments, the indication information is contained in the IE BSR-Config, for example.

[0232] In some embodiments, the indication information is configured or indicated for each logical channel or each logical channel group configured for the terminal device, or each second logical channel or each logical channel group including the second logical channel configured for the terminal device, respectively.

[0233] In the above embodiments, the indication information is contained in, for example, the IE LogicalChannelConfig.

[0234] In some embodiments, the indication information is configured or indicated for a logical channel used by the terminal device for reporting the first BSR next time.

[0235] In the above embodiments, the indication information is contained in, for example, the MAC CE or the DCI.

[0236] As shown in FIG. 17, the apparatus 1700 further includes:

[0237] The second receiving unit 1702 receives the first BSR and the DSR.

[0238] The network device determines, according to the DSR, which buffer size of which LCG is included in the first BSR.

[0239] The configuration content of the padding buffer status report has been described in the embodiments of the second aspect, and the content is incorporated herein, which will not be repeated here.

[0240] The above has exemplarily described the embodiments of the present application, but the present application is not limited thereto, and can be appropriately modified on the basis of the above various embodiments. For example, the above various embodiments can be used alone, or one or more of the above various embodiments can be combined.

[0241] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The apparatus 1700 of the embodiments of the present application can also include other components or modules, and the specific content of these components or modules can be referred to the related technology. In addition, the above various components or modules can be realized by, for example, hardware facilities such as processors, memories, transmitters, receivers, etc.; the present application is not limited thereto.

[0242] According to the apparatus of the embodiments of the present application, through the configuration or indication of the network device, the UE can determine which buffer size of which LCG is reported in the long truncated BSR, so that the network side and the UE side have a consistent understanding of the buffer size reported in the padding BSR, and then avoid the network device from allocating unsuitable uplink resources to cause the QoS of the UE service to be unable to be guaranteed.

[0243] Embodiments of the sixth aspect

[0244] The device for reporting the delay status report (DSR) provided by the embodiments of the present application may be a terminal device, or may be one or more components or assemblies configured in the terminal device. The device corresponds to the method of the embodiments of the third aspect, and the same content as the embodiments of the third aspect will not be repeated.

[0245] FIG. 18 is a schematic diagram of a device for reporting the delay status report (DSR) according to an embodiment of the present application. As shown in FIG. 18, the device 1800 includes:

[0246] The third sending unit 1801 reports the DSR when the second condition is met, and the DSR includes one of the following:

[0247] the remaining time and the buffer size of the logical channel group (LCG), and the identification and / or priority of the logical channel (LCH) in the LCG having data to be sent; or

[0248] the remaining time of the logical channel group (LCG), the identification and / or priority of the logical channel (LCH) in the LCG having data to be sent, and the buffer size corresponding to the identification and / or priority of the LCH; or

[0249] the identification and / or priority of the logical channel (LCH) in the logical channel group (LCG) having data to be sent, and the remaining time and the buffer size corresponding to the identification and / or priority of the LCH; or

[0250] the remaining time and the buffer size of the LCG configured by the terminal device or the LCG configured to have data to be sent.

[0251] In some embodiments, the data is delay-sensitive data, or delay-sensitive data and non-delay-sensitive data.

[0252] In some embodiments, the logical channel group is a logical channel group having delay-sensitive data, or a logical channel group having delay-sensitive data and non-delay-sensitive data.

[0253] The content of the delay status report has been described in the embodiments of the third aspect, and the content is incorporated herein, which will not be repeated here.

[0254] The embodiments of the present application have been exemplarily described above, but the present application is not limited thereto, and appropriate modifications can be made on the basis of the above various embodiments. For example, the above various embodiments can be used alone, or one or more of the above various embodiments can be combined.

[0255] It is worth noting that only the components or modules related to the present application are described above, but the present application is not limited thereto. The device 1800 of the embodiments of the present application can also include other components or modules, and the specific content of these components or modules can be referred to related technologies. In addition, each of the above components or modules can be implemented by, for example, hardware facilities such as processors, memories, transmitters, receivers, etc.; the implementation of the present application is not limited thereto.

[0256] According to the device of the embodiments of the present application, the UE reports more fine-grained residual time and / or BS information in the DSR, which helps the network device to understand the buffer status of the UE, so as to timely coordinate the reasonable uplink resource to meet the QoS requirement of the XR service of the UE.

[0257] Embodiments of the seventh aspect

[0258] The embodiments of the present application also provide a communication system, including a network device and a terminal device.

[0259] In the embodiments of the present application, the terminal device includes the device shown in FIG. 16 and FIG. 18 of the embodiments of the fourth and sixth aspects, and is configured to perform the method of the embodiments of the first and third aspects. Since the method has been described in detail in the embodiments of the first and third aspects, the content is incorporated herein, and will not be described repeatedly.

[0260] In the embodiments of the present application, the network device includes the device shown in FIG. 17 of the embodiments of the fifth aspect, and is configured to perform the method of the embodiments of the second aspect. Since the method has been described in detail in the embodiments of the second aspect, the content is incorporated herein, and will not be described repeatedly. In addition, the network device performs the conventional operation of the network device, and the network device can also perform the operation corresponding to the operation of the terminal device, for example, the network device receives the information / signal from the terminal device, and / or the network device sends the information / signal to the terminal device, which is omitted here.

[0261] The embodiments of the present application also provide a terminal device, which can be, for example, a UE, but the present application is not limited thereto, and can also be other terminal devices.

[0262] FIG. 19 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 19, the terminal device 1900 can include a processor 1901 and a memory 1902; the memory 1902 stores data and programs and is coupled to the processor 1901. It is worth noting that this figure is exemplary; other types of structures can also be used to supplement or replace this structure to implement telecommunication functions or other functions.

[0263] As shown in FIG. 19, the terminal device 1900 can further include a communication module 1903, an input unit 1904, a display 1905, and a power supply 1906. The functions of the above components are similar to those of the prior art, and will not be described here. It should be noted that the terminal device 1900 need not necessarily include all of the components shown in FIG. 19, and the above components are not essential; additionally, the terminal device 1900 can include components that are not shown in FIG. 19, and reference can be made to the relevant art.

[0264] The embodiment of the present application further provides a network device, which can be a base station, but the present application is not limited thereto, and can also be other network devices.

[0265] FIG. 20 is a structural schematic diagram of a network device according to an embodiment of the present application. As shown in FIG. 20, the network device 2000 can include a processor 2001 and a memory 2002, and the memory 2002 is coupled to the processor 2001. The memory 2002 can store various data, and further store programs for information processing, and execute the programs under the control of the processor 2001.

[0266] In addition, as shown in FIG. 20, the network device 2000 can further include transceivers 2003 and 2004. The functions of the above components are similar to those of the prior art, and will not be described here. It should be noted that the network device 2000 need not necessarily include all of the components shown in FIG. 20; additionally, the network device 2000 can include components that are not shown in FIG. 20, and reference can be made to the relevant art.

[0267] The embodiment of the present application further provides a computer program, which, when executed in a terminal device, causes the terminal device to perform the method according to the embodiments of the first aspect and the third aspect.

[0268] The embodiment of the present application further provides a storage medium storing a computer program, which causes a terminal device to perform the method according to the embodiments of the first aspect and the third aspect.

[0269] The embodiment of the present application further provides a computer program, which, when executed in a network device, causes the network device to perform the method according to the embodiments of the second aspect.

[0270] The embodiment of the present application further provides a storage medium storing a computer program, which causes a network device to perform the method according to the embodiments of the second aspect.

[0271] The apparatuses and methods described above can be implemented by hardware, or by hardware combined with software. The present application relates to a computer readable program, which, when executed by a logic component, causes the logic component to implement the above-described apparatuses or components, or causes the logic component to implement the above-described various methods or steps. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0272] The methods / apparatuses described in connection with the embodiments of the present application can be directly embodied as hardware, software modules executed by a processor, or a combination thereof. For example, one or more of the functional blocks shown in the figures and / or a combination of one or more of the functional blocks can correspond to individual software modules of a computer program flow, or to individual hardware modules. The software modules can correspond to individual steps shown in the figures. The hardware modules can be implemented by, for example, fixing the software modules using a field programmable gate array (FPGA).

[0273] The software modules can be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a mobile disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium can be coupled to the processor, so that the processor can read information from, and write information to, the storage medium; or the storage medium can be integral to the processor. The processor and the storage medium can be located in an ASIC. The software modules can be stored in the memory of the mobile terminal, or in a memory card that can be inserted into the mobile terminal. For example, if the device (e.g., the mobile terminal) uses a MEGA-SIM card or a large-capacity flash memory device, the software modules can be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0274] One or more of the functional blocks shown in the figures and / or a combination of one or more of the functional blocks can be implemented as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any appropriate combination thereof, for performing the functions described herein. One or more of the functional blocks shown in the figures and / or a combination of one or more of the functional blocks can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP core, or any other such configuration.

[0275] The present application is described above in connection with specific embodiments, but those skilled in the art will understand that the description is merely exemplary and is not intended to limit the scope of the application. Those skilled in the art can make various modifications and variations to the present application based on the spirit and principles of the present application, and such modifications and variations are within the scope of the present application.

[0276] In connection with the embodiments including the above embodiments, the following notes are also disclosed:

[0277] 1. A padding BSR configuration apparatus configured in a network device, the apparatus comprising:

[0278] a second sending unit configured to send indication information to a terminal device, the indication information configuring or indicating whether the terminal device reports a first BSR according to the first priority or using the second priority.

[0279] 2. The apparatus according to note 1, wherein,

[0280] the indication information is contained in at least one of the following RRC messages: RRC setup, RRC reconfiguration, RRC re-establishment, RRC resume.

[0281] 3. The apparatus according to note 1, wherein,

[0282] the indication information is configured or indicated for a configured logical channel or a configured second logical channel of the terminal device.

[0283] 4. The apparatus according to note 3, wherein,

[0284] the indication information is contained in IE BSR-Config.

[0285] 5. The apparatus according to note 1, wherein,

[0286] the indication information is configured or indicated for each logical channel or each logical channel group of the terminal device or each second logical channel or each logical channel group including the second logical channel configured respectively.

[0287] 6. The apparatus according to note 5, wherein,

[0288] the indication information is contained in IE LogicalChannelConfig.

[0289] 7. The apparatus according to note 1, wherein,

[0290] The indication information configures or indicates the logical channel used by the terminal device for next first BSR reporting.

[0291] 8.The apparatus according to appended 7, wherein,

[0292] The indication information is contained in a MAC CE or DCI.

[0293] 9.The apparatus according to appended 1, wherein, the apparatus further comprises:

[0294] The second receiving unit receives the first BSR and DSR.

[0295] The network device determines which LCG buffer size is included in the first BSR according to the DSR.

[0296] 10.A communication system comprising a network device and a terminal device, wherein,

[0297] The network device comprises a memory and a processor, the memory stores a computer program, and the processor is configured to execute the method as follows:

[0298] The network device sends indication information to the terminal device, the indication information configures or indicates whether the terminal device reports a first BSR according to a first priority or a second priority; wherein, the network device configures the first priority and the second priority for at least one second logical channel;

[0299] and / or,

[0300] The terminal device comprises a memory and a processor, the memory stores a computer program, and the processor is configured to execute the method as follows:

[0301] In the case where the network device configures a first priority and a second priority for at least one second logical channel, when a first condition is met, the terminal device reports a first BSR according to the first priority or the second priority; and / or,

[0302] When a second condition is met, the terminal device reports a DSR, the DSR comprises one of:

[0303] a Remaining Time and a Buffer Size of a Logical Channel Group (LCG) , and an identification and / or a priority of a Logical Channel (LCH) in the LCG having data to be sent; or,

[0304] a remaining time of a logical channel group (LCG), an identity and / or priority of a logical channel (LCH) in the LCG having data to be sent, and a buffer size corresponding to the identity and / or priority of the LCH; or

[0305] an identity and / or priority of a logical channel (LCH) in the logical channel group (LCG) having data to be sent, and a remaining time and a buffer size corresponding to the identity and / or priority of the LCH; or

[0306] a remaining time and a buffer size of an LCG configured for the terminal device or an LCG configured for the terminal device having data to be sent.

Claims

1. A device configured to report padding buffer status report (BSR), comprising: a first sending unit configured to report a first BSR according to a first priority or a second priority when a first condition is met, in a case that a network device configures the first priority and the second priority for at least one second logical channel. 2.The device of claim 1, wherein the first condition is that a number of padding bits is greater than a size of a short BSR plus a size of a subheader thereof but less than a size of a long BSR plus a size of a subheader thereof, and more than one logical channel group (LCG) has data to be transmitted when a BSR is to be built; the first BSR is a long truncated BSR.

3. The apparatus of claim 1, wherein, The terminal device reports the first BSR according to the first priority or the second priority, comprising: for one or more LCGs having data to be transmitted, the terminal device reports the first BSR according to the first priority, regardless of whether the LCGs include the second logical channel. 4.The device of claim 3, wherein in the first BSR, the terminal device reports buffer sizes of LCGs in a descending order of priorities of logical channels having the highest priorities in the LCGs having data to be transmitted, and reports the buffer sizes of the LCGs in an ascending order of LCG identifiers in a case that the priorities are the same; wherein the logical channels having the highest priorities have data or have no data to be transmitted, and the priorities are the first priorities.

5. The apparatus of claim 1, wherein, The terminal device reports the first BSR according to the first priority or the second priority, comprising: for one or more LCGs having data to be transmitted, the terminal device reports the first BSR according to the second priority in a case that the LCGs include at least one second logical channel. 6.The device of claim 5, wherein in the first BSR, the terminal device reports buffer sizes of LCGs in a descending order of priorities of logical channels having the highest priorities in the LCGs having data to be transmitted, and reports the buffer sizes of the LCGs in an ascending order of LCG identifiers in a case that the priorities are the same; wherein the logical channels having the highest priorities have data or have no data to be transmitted, and for the second logical channels in the LCGs, the priorities are the second priorities of the second logical channels, and / or for first logical channels in the LCGs which are not configured with the second priorities, the priorities are first priorities of the first logical channels. The terminal device reports the first BSR according to the first priority or the second priority, comprising:

7. The apparatus of claim 1, wherein, The terminal device reports the first BSR according to the first priority or the second priority according to an indication from a network device. The device further comprises:

8. The apparatus of claim 7, wherein, ​ a first receiving unit configured to receive indication information from a network device, the indication information configuring or indicating the terminal device to report the first BSR according to the first priority or the second priority of the second logical channel in a case that the one or more LCGs have data to be transmitted and the LCGs comprise at least one second logical channel. 9.The apparatus of claim 8, wherein, the indication information is contained in at least one of the following RRC messages: RRC setup, RRC reconfiguration, RRC re-establishment, RRC resume. 10.The apparatus of claim 8, wherein, the indication information is configured or indicated for each configured logical channel or each configured logical channel group of the terminal device or each configured second logical channel or each logical channel group comprising the second logical channel. 11.The apparatus of claim 10, wherein, the indication information is contained in IE BSR-Config. 12.The apparatus of claim 8, wherein, the indication information is configured or indicated for each configured logical channel or each configured logical channel group of the terminal device or each configured second logical channel or each logical channel group comprising the second logical channel respectively. 13.The apparatus of claim 12, wherein, the indication information is contained in IE LogicalChannelConfig. 14.The apparatus of claim 8, wherein, the indication information is configured or indicated for a logical channel used by the terminal device for next first BSR reporting. 15.The apparatus of claim 14, wherein, the indication information is contained in MAC CE or DCI.

16. The apparatus of claim 1, wherein, the terminal device reports the first BSR according to the first priority or the second priority, comprising: for the one or more LCGs having data to be transmitted, the terminal device reports the first BSR according to the first priority or the second priority of the second logical channel in the LCGs according to whether the second logical channel in the LCG has delay urgent data. 17.The apparatus of claim 16, wherein, in a case that the second logical channel in the LCG has the urgent delay data, the terminal device reports the first BSR according to the second priority of the second logical channel, otherwise, according to the first priority of the second logical channel. 18.An apparatus for delay status reporting (DSR) reporting, configured in a terminal device, the apparatus comprising: a third sending unit configured to report a DSR when a second condition is met, the DSR comprising one of: a Remaining Time and a Buffer Size of a logical channel group (LCG) and an identification and / or a priority of a logical channel (LCH) in the LCG having data to be transmitted; or, a remaining time of a logical channel group (LCG), an identity and / or a priority of a logical channel (LCH) in the LCG having data to be transmitted, and a buffer size corresponding to the identity and / or the priority of the LCH; or, an identity and / or a priority of a logical channel (LCH) in the logical channel group (LCG) having data to be transmitted, and a remaining time and a buffer size corresponding to the identity and / or the priority of the LCH; or, a remaining time and a buffer size of an LCG configured for the terminal device or an LCG configured for the terminal device having data to be transmitted.

19. The apparatus of claim 18, wherein, the data is delay sensitive data, or delay sensitive data and non-delay sensitive data.

20. The apparatus of claim 18, wherein, the logical channel group is a logical channel group having delay sensitive data, or a logical channel group having delay sensitive data and non-delay sensitive data.

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