Ue information reporting and packet delay management in wireless communications

Abstract

A method, apparatus and system relating to UE information reporting and packet delay management techniques in a communication system. In one example aspect, a method for digital communication includes transmitting, by a wireless device to a first communication device, a signal including cache size reporting information, where the cache size reporting information includes identification information, cache size information, and time information.

Description

Technical Field

[0001] The present invention relates to UE information reporting and packet delay management technology in a communication system.

[0002] background

[0003] Mobile telecommunications technology is driving the world towards an increasingly interconnected and networked society. Compared to existing wireless networks, next-generation systems and communication technologies will need to support a wider range of use case characteristics and provide a more complex and sophisticated range of access requirements and flexibility.

[0004] Long Term Evolution (LTE) is a wireless communication standard for mobile devices and data terminals developed by the Third Generation Partnership Project (3GPP). LTE Advanced (LTE-A) is a wireless communication standard that enhances the LTE standard. The fifth generation wireless system (referred to as 5G) advances the LTE and LTE-A wireless standards and is committed to supporting higher data rates, massive connectivity, ultra-low latency, high reliability and other emerging business requirements.

[0005] Summary

[0006] This patent document discloses techniques such as rate matching design for polar coding, PAC coding and / or other pre-conversion polar coding schemes.

[0007] In one example aspect, a first wireless communication method is disclosed. The method includes sending, by a wireless device, a signal including buffer size report information to a first communication device, wherein the buffer size report information includes identification information, buffer size information, and time information.

[0008] In another example aspect, another wireless communication method is disclosed. The method includes: receiving, by a first communication device, a signal sent by a wireless device including buffer size report information, wherein the buffer size report includes identification information, buffer size information, and time information; and determining, by the first communication device, resource allocation for the wireless device based on the buffer size report information.

[0009] In yet another example aspect, a wireless communication device is disclosed, comprising a process configured or operable to perform the above method.

[0010] In yet another example aspect, a computer-readable storage medium is disclosed. The computer-readable storage medium stores codes, which, when executed by a processor, cause the processor to implement the above method.

[0011] BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A diagram showing an example of mapping between QoS flows and logical channels.

[0013] Figure 2 A diagram showing an example of a buffer size and related time information reporting MAC CE.

[0014] FIG. 2A to FIG. 2B Diagram showing other examples of buffer size and related time information reporting MAC CE.

[0015] Figure 3 Examples of (AN) packet delay budget and / or PDU set delay budget transmission structures are shown.

[0016] Figure 3A-3B Other examples of (AN) packet delay budget and / or PDU set delay budget transmission structures are shown.

[0017] Figure 3C An example of a time threshold transmission structure is shown.

[0018] Figure 4 An exemplary block diagram of a hardware platform that may be part of a network device or a communication device is shown.

[0019] Figure 5 An example of network communications including a base station (BS) and a user equipment (UE) based on some implementations of the disclosed technology is shown.

[0020] Figure 6 is a flowchart representation of a method for digital communications in accordance with one or more embodiments of the present technology.

[0021] Figure 7 is a flowchart representation of another method for digital communications in accordance with one or more embodiments of the present technology.

[0022] Figure 8 Another example flow chart representation of a method for digital communications in accordance with one or more embodiments of the present technology is shown.

[0023] Detailed Description

[0024] The titles of the following sections are intended to aid understanding of the disclosed subject matter and do not in any way limit the scope of the claimed subject matter. Therefore, one or more features of one section may be combined with one or more features of another section. In addition, the use of 5G terminology is for clarity of explanation, but the technology disclosed in this document is not limited to 5G technology, but can also be used in wireless systems implementing other protocols.

[0025] The present application discloses methods and apparatus related to reporting buffer size and related delay budget information in a wireless communication system.

[0026] In a wireless communication system such as an LTE, NR or 6G system, the core network may send the following delay budget to a radio network element (e.g., eNB, gNB):

[0027] • Packet Delay Budget (PDB): This indicates the upper limit of the time a packet can be delayed between the N6 termination point at the UE and the User Plane Function (UPF).

[0028] • Core Network Packet Delay Budget (CN PDB): This indicates the delay between any N6 termination point at the UPF and the radio network elements.

[0029] • PDU Set Delay Budget (PSDB): This indicates the upper limit of the time that a PDU set can be delayed between the N6 termination point at the UE and the User Plane Function (UPF).

[0030] Core Network PDU Set Delay Budget (CN PSDB): This indicates the PDU set delay between any N6 termination point at the UPF and the radio network element. In some cases, the CN PSDB may be replaced by a CN PDB (eg, with the same value).

[0031] Based on the PDB and CN PDB, the 5G access network packet delay budget (5G-AN PDB) can be determined: it indicates the upper limit of the time that a packet can be delayed between the UE and the radio network element, and is determined by subtracting the CN PDB from the PDB. Similarly, the 5G access network packet delay budget (5G-AN PSDB) can be determined by subtracting the CN PDDB from the PSDB.

[0032] For UL packet transmission, the following steps are generally used:

[0033] UE reports buffer size level to radio network element (e.g., reports the amount of UL packets in UE buffer via BSR MAC CE);

[0034] The radio network element allocates an UL grant to the UE based on the reported BSR and the AN PDB;

[0035] · The UE sends UL packets through the allocated UL grant.

[0036] Based on the conventional process, when the radio network element allocates UL grant to the UE, it cannot know how long the UL packet is buffered before sending the BSR and the remaining AN PDB can be used for transmission. If the radio network element allocates UL grant based on the AN PDB (e.g., without considering the duration of the UL packet being buffered in the UE), the UL packet transmission delay (e.g., the delay from the packet arriving at the UE PDCP or PDCP upper layer SAP to the packet arriving at the radio network element) may exceed the AN PDB, and the UL transmission cannot meet the service demand.

[0037] Furthermore, based on the current specification, PDB and CN PDB are configured per QoS flow, but BSR is reported per logical channel group (LCG), and one LCG may include multiple logical channels. The mapping of QoS flows to logical channels is described in Figure 1 Shown in.

[0038] Therefore, even if the UE reports the remaining AN PDB per LCG, the radio network element cannot determine which logical channel the remaining AN PDB corresponds to. Also, the UE cannot know the PDB for the non-standardized 5QI case and cannot determine the remaining AN PDB.

[0039] In addition, when the UE receives a UL grant, and if there are multiple logical channels with data to be transmitted, the UE should prioritize the logical channels (Logical Channel Prioritization, LCP) and select one or more logical channels with data to be transmitted. Based on the current specification, only the PBR (Priority Bit Rate) and the elapsed time for data to be buffered in the UE are considered, and the remaining PDBs are not considered. Therefore, logical channels with smaller PDBs will not be prioritized for transmission, and the UL packet transmission delay (e.g., the delay from the packet arriving at the UE PDCP or PDCP upper layer SAP to the packet arriving at the radio network element (e.g., radio network element PDCP)) may exceed the AN PDB and the UL transmission cannot meet the service requirements.

[0040] To overcome these and other problems, solutions have been proposed.

[0041] Example Introduction

[0042] This section discloses multiple examples related to UE information reporting and packet delay management technology in a wireless communication system. The details of the examples will be described in the following embodiments.

[0043] Example 1

[0044] This section discloses examples involving frame design involving timing information and BSR.

[0045] Based on the PDB and CN PDB, the 5G access network packet delay budget (5G-AN PDB) can be determined: it indicates the upper limit of the time that a packet can be delayed between the UE and the radio network element, and is determined by subtracting the CN PDB from the PDB. The radio network element can also determine a packet discard timer per DRB based on the AN PDB, or a PDU set discard timer per DRB based on the AN PSDB.

[0046] As described in the background section, the radio network element cannot know how long the UL packet is buffered on the UE side based on the conventional process. If the radio network element allocates UL grants based on the AN PDB (e.g., without considering the duration of the UL packet being buffered in the UE) or the packet discard timer, the UL packet transmission delay (e.g., the delay from the packet arriving at the UE PDCP to the packet arriving at the radio network element (e.g., the radio network element PDCP)) may exceed the AN PDB or the packet discard timer, and the UL transmission cannot meet the service requirements.

[0047] And, based on the current specification, PDB, CN PDB, PSDB and CN PSDB are configured per QoS flow, and packet discard timer is configured per DRB, but BSR is reported per logical channel group (LCG), and one LCG may include multiple logical channels, and multiple QoS flows and / or multiple DRBs may be mapped to one logical channel. Therefore, even if the UE reports the remaining AN PDB per LCG, reports the remaining AN PSDB per LCG, or the remaining packet discard time, the wireless network element cannot determine which logical channel the remaining AN PDB, the remaining AN PSDB per LCG, or the remaining packet discard time corresponds to. And the UE cannot know the PDB for the non-standardized 5QI case, and cannot determine the remaining AN PDB.

[0048] This embodiment proposes an example of solving the above-mentioned problems.

[0049] Figure 2 An example of reporting the cache size and related time information to the MAC CE is shown in FIG. Figure 2 Disclosed:

[0050] LCG ID, indicating a logical channel group identifier, which identifies the group of logical channels (one or more) for which the buffer status is being reported.

[0051] Buffer size: Identifies the amount of data available on all logical channels of the logical channel group after all MAC PDUs have been built for the TTI. The amount of data is indicated in bytes. It should include the data available for transmission in the PDCP layer and in the RLC layer corresponding to the time information; the buffer size level includes at least one of the following: the existing buffer size level, the existing buffer size level for finer granularity interpolation, the TB size value (one or more), and the multiple of the TB size value (one or more)

[0052] Time information: identifies the time when the buffer size is cached in the UE, which includes at least one of the following items: the elapsed time since the packet (one or more) arrived at the UE PDCP or the PDCP upper layer SAP; the remaining time before the elapsed time since the packet (one or more) arrived at the UE PDCP or the PDCP upper layer SAP reaches the (AN) packet delay budget; the remaining time before the packet discard timer expires; the arrival time of the packet (one or more) at the UE PDCP or the PDCP upper layer SAP; an immediate scheduling indication, indicating whether the packet (one or more) corresponding to the buffer size should be scheduled or sent immediately. Scheduling priority indication, indicating whether the packet (one or more) corresponding to the buffer size should be scheduled or sent with a higher priority, the elapsed time since the PDU set (one or more) arrived at the UE PDCP or PDCP upper layer SAP; the remaining time before the PDU set (one or more) arrived at the UE PDCP or PDCP upper layer SAP reaches the (AN) PDU set delay budget; the remaining time before the PDU set discard timer expires; the arrival time of the PDU set (one or more) at the UE PDCP or PDCP upper layer SAP; immediate scheduling indication, indicating whether the PDU set (one or more) corresponding to the buffer size should be scheduled or sent immediately. Scheduling priority indication, indicating whether the PDU set (one or more) corresponding to the buffer size should be scheduled or sent with a higher priority.

[0053] When the (AN) packet delay budget is used to determine the time information, and one LCG corresponds to multiple (AN) packet delay budgets (for example, multiple QoS flows with different (AN) packet delay budgets are mapped to one LCG), the minimum value of the (AN) packet delay budgets of the QoS flows mapped to the LCG is used to calculate the time information of the LCG.

[0054] When the (AN)PDU set delay budget is used to determine time information, one LCG corresponds to multiple (AN)PDU set delay budgets (for example, multiple QoS flows with different (AN)PDU set delay budgets are mapped to one LCG), and the minimum value of the (AN)PDU set delay budgets of the QoS flows mapped to the LCG is used to calculate the time information of the LCG.

[0055] When a packet discard timer is used to determine time information, and one LCG corresponds to multiple packet discard timers (for example, multiple radio bearers are mapped to one LCG), the minimum value of the packet discard timers of the radio bearers mapped to the LCG is used to calculate the time information of the LCG.

[0056] When the PDU set discard timer is used to determine the time information, and one LCG corresponds to multiple PDU set discard timers (for example, multiple radio bearers are mapped to one LCG), the minimum value among the PDU set discard timers of the radio bearers mapped to the LCG is used to calculate the time information of the LCG.

[0057] When the elapsed time or the remaining time is reported, the reference timing should also be indicated taking into account the MAC CE transmission (retransmission) delay, for example, explicitly indicated by the reference SFN field or implicitly defined based on a predefined nearest SFN (e.g., SFN0), and the time information is calculated based on the SFN end boundary. The elapsed time or the remaining time can be a duration (e.g., indicated in units of milliseconds, microseconds, number of slots, number of subframes, etc.), a percentage of the (AN) packet delay budget, a percentage of the (AN) PDU set delay budget, a percentage of the packet discard timer.

[0058] When the arrival time is reported, it includes at least one of the following information: the value of the least significant (rightmost) 2 bits of the super SFN, the SFN (System Frame Number), the sub SFN, the timeslot number.

[0059] When an immediate scheduling indication or a scheduling priority indication is reported, it may be explicitly reported through an indication field in a MAC CE, or may be implicitly reported through a predefined logical channel ID in the MAC header (e.g., a specific logical channel ID is predefined for higher priority buffer size reporting).

[0060] In the case where multiple PDUs belong to a PDU set, the PDU remaining time, the PDU set elapsed time, and the PDU set delay budget are used to calculate the remaining time or elapsed time. Among them, the maximum elapsed time of the PDUs in the PDU set is used as the PDU set elapsed time, and the minimum remaining time of the PDUs in the PDU set is used as the PDU set remaining time. This rule is also used for all inventions (for example, when a PDU belongs to a PDU set, the PDU set time replaces the PDU time for time calculation).

[0061] The number of bits of each field in the MAC CE is only an example, which may be less or more. The number of octs is also only an example, and more octs may be used according to the MAC CE.

[0062] like Figure 2ADisclosed:

[0063] This field information is related to Figure 2 The same as MAC CE, except that the radio bearer identifier is included in the buffer size and related time information reporting MAC CE (e.g., the radio bearer identifier is used instead of the LCG ID), which can, for example, report the buffer size and related time information per radio bearer in a finer granularity.

[0064] When the (AN) packet delay budget is used to determine the time information, and one radio bearer corresponds to multiple (AN) packet delay budgets (for example, multiple QoS flows with different (AN) packet delay budgets are mapped to one radio bearer), the minimum value of the (AN) packet delay budgets of the QoS flows mapped to the radio bearer is used to calculate the time information of the radio bearer.

[0065] When the (AN)PDU set delay budget is used to determine the timing information, and one radio bearer corresponds to multiple (AN)PDU set delay budgets (for example, multiple QoS flows with different (AN)PDU set delay budgets are mapped to one radio bearer), the minimum value of the (AN)PDU set delay budgets of the QoS flows mapped to the radio bearer is used to calculate the timing information of the radio bearer.

[0066] like Figure 2B Disclosed:

[0067] This field information is related to Figure 2 The same, except that the logical channel identifier is included in the buffer size and related time information reporting MAC CE (replaced by the logical channel identifier LCG ID), which can report the buffer size and related time information by logical channel, for example, using more bits of MAC CE and reporting the buffer size and related time information with finer granularity.

[0068] When the (AN) packet delay budget is used to determine the time information, and one logical channel corresponds to multiple (AN) packet delay budgets (for example, multiple QoS flows with different (AN) packet delay budgets are mapped to one logical channel), the minimum value of the (AN) packet delay budgets of the QoS flows mapped to the logical channel is used to calculate the time information of the logical channel.

[0069] When the (AN)PDU set delay budget is used to determine the timing information, and one logical channel corresponds to multiple (AN)PDU set delay budgets (for example, multiple QoS flows with different (AN)PDU set delay budgets are mapped to one logical channel), the minimum value of the (AN)PDU set delay budgets of the QoS flows mapped to the logical channel is used to calculate the timing information of the logical channel.

[0070] When a packet discard timer is used to determine time information and one logical channel corresponds to multiple packet discard timers (for example, multiple radio bearers are mapped to one logical channel), the minimum value of the packet discard timers of the radio bearers mapped to the logical channel is used to calculate the time information of the logical channel.

[0071] When a PDU set discard timer is used to determine the time information and one logical channel corresponds to multiple PDU set discard timers (for example, multiple radio bearers are mapped to one logical channel), the minimum value of the PDU set discard timer of the radio bearers mapped to the logical channel is used to calculate the time information of the logical channel.

[0072] Example 2

[0073] This section discloses an example involving the following: when the UE receives a UL grant and there are multiple logical channels with data to be transmitted, how the UE should prioritize logical channels (Logical Channel Prioritization, LCP) and select one or more logical channels with data to be transmitted.

[0074] For LCP enhancement, multiple examples are disclosed that consider PDBs or discard timers with relative priorities.

[0075] This embodiment is related to the previous embodiment.

[0076] Whenever a new transmission is performed, the Logical Channel Prioritization (LCP) procedure is applied.

[0077] RRC controls the scheduling of uplink data by sending signals for each logical channel per MAC entity:

[0078] -priority, where increasing priority values ​​indicate lower priority levels;

[0079] -priorityizedBitRate, which sets the prioritized bit rate (PBR);

[0080] -bucketSizeDuration, which sets the bucket size duration (BSD).

[0081] The following UE variables are used in the logical channel prioritization procedure:

[0082] - Bj, which is maintained for each logical channel j.

[0083] When a logical channel is established, the MAC entity shall initialize Bj of the logical channel to zero.

[0084] For each logical channel j, the MAC entity shall:

[0085] 1> Before each instance of the LCP process, Bj is increased by the product of PBR×T×1 / residualT, where T is the elapsed time since Bj was last increased; residual T is the remaining time before the elapsed time since the arrival of packet(s) at the UE PDCP or PDCP upper layer SAP reaches the (AN) packet delay budget, the remaining time since the arrival of PDU set(s) at the UE PDCP or PDCP upper layer SAP reaches the (AN) PDU set delay budget, the remaining time before the packet discard timer expires, or the remaining time before the PDU set discard timer expires.

[0086] 1> If the value of Bj is greater than the bucket size (ie PBR×BSD):

[0087] 2> Set Bj to the bucket size.

[0088] When performing a new transmission, the MAC entity shall:

[0089] 1> Allocate resources to logical channels as follows:

[0090] 2> The logical channels selected for the UL grant with Bj>0 in clause 5.4.3.1.2 are allocated resources in descending order of priority. If the PBR of a logical channel is set to infinity, the MAC entity shall allocate resources for all data available for transmission on the logical channel before the PBR of the lower priority logical channel(s) is met;

[0091] 2> Subtract the total size of the MAC SDU provided to the above logical channel j from Bj.

[0092] Example 3

[0093] This section discloses an example involving the following: when the UE receives a UL grant and there are multiple logical channels with data to be transmitted, how the UE should prioritize logical channels (Logical Channel Prioritization, LCP) and select one or more logical channels with data to be transmitted.

[0094] Specifically, multiple examples are disclosed regarding an absolute priority scheme for PDB or discard timers for LCP enhancement.

[0095] This embodiment is related to the previous embodiment.

[0096] Whenever a new transmission is performed, the Logical Channel Prioritization (LCP) procedure is applied.

[0097] RRC controls the scheduling of uplink data by sending signals for each logical channel per MAC entity:

[0098] -priority, where increasing priority values ​​indicate lower priority levels;

[0099] -priorityizedBitRate, which sets the prioritized bit rate (PBR);

[0100] -bucketSizeDuration, which sets the bucket size duration (BSD);

[0101] -lcpTimeThreshold, which sets the time threshold for LCP decisions.

[0102] When the remaining T is less than or equal to lcpTimeThreshold, the MAC selects the logical channel with the highest priority, where the remaining T is the remaining time since the packet(s) arrived at the UE PDCP or PDCP upper layer SAP before reaching the (AN) packet delay budget, or the remaining time before the PDCP discard timer expires, or the PDU set remaining time.

[0103] The following UE variables are used in the logical channel prioritization procedure:

[0104] - Bj, which is maintained for each logical channel.

[0105] When a logical channel is established, the MAC entity shall initialize Bj of the logical channel to zero.

[0106] For each logical channel j, the MAC entity shall:

[0107] 1> Before each instance of the LCP process, increase Bj by the product of PBR×T, where T is the elapsed time since Bj was last increased;

[0108] 1> If the value of Bj is greater than the bucket size (ie PBR×BSD):

[0109] 2> Set Bj to the bucket size.

[0110] When performing a new transmission, the MAC entity shall:

[0111] 1> Allocate resources to logical channels as follows:

[0112] 2> The logical channels selected for the UL grant with Bj>0 in clause 5.4.3.1.2 are allocated resources in descending priority order.

[0113] If the remaining T is equal to or less than lcpTimeThreshold, the MAC entity shall first allocate resources for data with a remaining T less than or equal to lcpTimeThreshold for transmission on the logical channel.

[0114] If a specific PDU is transmitted successfully, the MAC entity should first allocate resources for the data in the PDU set with the successfully transmitted specific PDU (one or more) for transmission on the logical channel; if the PDU set is transmitted successfully, the MAC entity should first allocate resources for the PDU set that depends on the successfully transmitted PDU set for transmission on the logical channel.

[0115] If the PBR of a logical channel is set to infinity, the MAC entity shall allocate resources for all data available for transmission on the logical channel before satisfying the PBR of lower priority logical channels (one or more);

[0116] 2> Subtract the total size of the MAC SDU provided to the above logical channel j from Bj; Example 4

[0117] This section discloses examples involving transmission procedures for PDB, PSDB, or LCP time threshold delivery.

[0118] This embodiment is related to the previous embodiment.

[0119] Figure 3 Examples of (AN) packet delay budgets and / or PDU set delay budgets transmitted from the core network to the UE are shown.

[0120] like Figure 3 As shown, the packet delay budget, AN packet delay budget, PDU set delay budget (PSDB) and / or AN PDU set delay budget are sent by the NAS from the core network to the UE so that the UE can evaluate the remaining time (e.g., the time elapsed since the packet (one or more) arrived at the UE PDCP or PDCP upper layer SAP) before reaching the (AN) packet delay budget. Figure 2 , Figure 2-1 and Figure 2-2 As shown) or logical channel prioritization is performed based on the packet delay budget in Examples 2 and 3.

[0121] The packet delay budget or AN packet delay budget is a PDU set delay budget or an AN PDU set delay budget.

[0122] like Figure 3A As shown, the packet delay budget per RB or per DRB, the AN packet delay budget, the PDU set delay budget (PSDB) and / or the AN PDU set delay budget are sent from the gNB to the UE via RRC signaling, for example, the packet delay budget or the AN packet delay budget is included in the RadioBearerConfig IE, the SDAP-Config IE or the DRB-ToAddMod IE.

[0123] It is used by the UE to estimate the remaining time (e.g., time remaining before the (AN) packet delay budget is reached) since the time the packet(s) arrive at the UE PDCP or PDCP upper layer SAP. Figure 2 , Figure 2-1 and Figure 2-2 As shown) or logical channel prioritization is performed based on the packet delay budget in Examples 2 and 3.

[0124] like Figure 3B As shown, the packet delay budget per logical channel, AN packet delay budget, PDU set delay budget (PSDB) and / or AN PDU set delay budget are sent from the gNB to the UE via RRC signaling, for example, the packet delay budget or AN packet delay budget is included in the LogicalChannelConfig IE. These can be used by the UE to estimate the remaining time before the (AN) packet delay budget is reached (e.g., the elapsed time since the arrival of the packet(s) at the UE PDCP or PDCP upper layer SAP) reaches the elapsed time since the arrival of the packet(s) at the UE PDCP or PDCP upper layer SAP) (e.g., the elapsed time since the arrival of the packet(s) at the UE PDCP or PDCP upper layer SAP) (e.g., the elapsed time since the arrival of the packet(s) at the UE PDCP or PDCP upper layer SAP) (e.g., the elapsed time since the arrival of the packet(s) at the UE PDCP or PDCP upper layer SAP) reaches the remaining time before the (AN) packet delay budget is reached ... Figure 2 , Figure 2A and Figure 2B As shown) or logical channel prioritization is performed based on the packet delay budget in Examples 2 and 3.

[0125] like Figure 3C As shown, the time threshold (lcpTimeThreshold) for logical channel prioritization is sent from the gNB to the UE via RRC signaling, for example, the time threshold (lcpTimeThreshold) for logical channel prioritization is included in the LogicalChannelConfig IE. These can be used by the UE to determine the logical channel priority during the LCP process in Example 3.

[0126] Example 5

[0127] This section discloses examples related to examples related to determining channel transmission priorities based on received information.

[0128] This embodiment is related to the previous embodiment.

[0129] In this embodiment, the logicalChannelID, LCG ID or DRB ID is included in the PDCCH DCI for the UL grant to explicitly indicate that the UL grant is used in the indicated logicalChannelID, LCG ID or DRB ID with the highest priority.

[0130] For example, if the logicalChannelID is included in the PDCCH DCI including the UL authorization, the MAC entity of the UE should first allocate resources for the packets or PDU sets for transmission on the logical channel with the logicalChannelID included in the DCI; if the LCG ID is included in the PDCCH DCI including the UL authorization, the MAC entity of the UE should first allocate resources for the packets or PDU sets for transmission on the logical channel (one or more) included in the LCG with the LCG ID included in the DCI; if the DRB ID is included in the PDCCH DCI including the UL authorization, the MAC entity of the UE should first allocate resources for the packets or PDU sets for transmission on the logical channel (one or more) corresponding to the DRB with the DRB ID included in the DCI.

[0131] Example 6

[0132] This section discloses examples of methods involving UE capability reporting.

[0133] In the rel-17 NB-IoT, eMTC and NR specifications, NTN (Non-Terrestrial Network) is supported, therefore, the UE can support both TN and NTN, for example, the UE can access a TN cell or access an NTN cell, but the wireless capabilities may be different, for example, the UE supports some features in TN but not in NTN.

[0134] Generally, the UE reports its own radio capabilities in the TN; in order to distinguish the radio capabilities of the UE between the TN and the NTN, a possible way is that the UE reports its own TN radio capabilities and NTN radio capabilities at the same time.

[0135] Considering that although some feature capabilities of the same UE on TN and NTN are different, most of the feature capabilities of the same UE in TN and NTN are the same. Therefore, if the UE reports its entire TN radio capabilities and the entire NTN radio capabilities at the same time, the load of the UE radio capability report will be very large, and the common feature capability information (such as supported in both TN and NTN, or not supported in both NTN and TN) is redundant.

[0136] Normally, the UE reports its entire TN radio capabilities. An optimized way to report its TN and NTN capabilities is:

[0137] If the feature is applied to both TN and NTN, and if the NTN wireless capability IE does not include a wireless capability field for NTN, the same field for TN's wireless capability in the TN wireless capability IE is also applied to NTN (for example, for features that the UE supports in both TN and NTN, or does not support in both NTN and TN, the UE can implicitly report its NTN wireless capability with its TN wireless capability IE. That is, for features applicable to both TN and NTN: if the NTN wireless capability IE does not include a feature capability field, the TN feature wireless capability in the TN wireless capability IE is applied to both TN and NTN; if the NTN wireless capability IE includes a feature capability field, the feature capability field in the NTN wireless capability IE only indicates its NTN wireless capability; for features applicable only to TN or NTN, the feature capability field in the NTN wireless capability IE only indicates its NTN wireless capability, and the TN feature wireless capability in the TN wireless capability IE only indicates its NTN wireless capability). By this method, the load of UE wireless capability reporting can be reduced. This method can be applied to any case where there are two IEs with the same sub-IE, where when a sub-IE is not included in one IE, the value of the same sub-IE in the other IE will be applied to both IEs.

[0138] Figure 4 An exemplary block diagram of a hardware platform 400 is shown, which may be part of a network device (e.g., a base station) or a communication device (e.g., a user equipment (UE)). The hardware platform 400 includes at least one processor 410 and a memory 405, on which instructions are stored. When the processor 410 executes the instructions, the instructions configure the hardware platform 400 to perform Figures 1 to 3 The operations described in the various embodiments described in and in this patent document. Transmitter 415 transmits or sends information or data to another device. For example, a network device transmitter can send a message to a user device. Receiver 420 receives information or data transmitted or sent by another device. For example, a user device can receive a message from a network device.

[0139] The implementation as described above will be applied to network communications. Figure 5An example of a communication system (e.g., a 5G or NR cellular network) including a base station 520 and one or more user equipments (UEs) 511, 512, and 513 is shown. In some embodiments, the UE accesses a BS (e.g., a network) using a communication link to the network (sometimes referred to as an uplink direction, as depicted by dashed arrows 531, 532, 533), and then enables subsequent communication from the BS to the UE (e.g., shown in a direction from the network to the UE, sometimes referred to as a downlink direction, as depicted by arrows 541, 542, 543). In some embodiments, the BS sends information to the UE (sometimes referred to as a downlink direction, as depicted by arrows 541, 542, 543), and then enables subsequent communication from the UE to the BS (e.g., shown in a direction from the UE to the BS, sometimes referred to as an uplink direction, as depicted by dashed arrows 531, 532, 533). The UE may be, for example, a smartphone, a tablet, a mobile computer, a machine-to-machine (M2M) device, an Internet of Things (IoT) device, or the like.

[0140] Figure 6 An example flow chart representation of a method of digital communication according to one or more embodiments of the present technology is shown. Operation 602 includes sending, by a wireless device, a signal including buffer size reporting information to a first communication device, wherein the buffer size reporting information includes identification information, buffer size information, and time information.

[0141] Figure 7 Another example flow chart representation of a method of digital communication according to one or more embodiments of the present technology is shown. Operation 702 includes receiving, by a first communication device, a signal sent by a wireless device including buffer size report information, wherein the buffer size report includes identification information, buffer size information, and time information. Operation 704 includes determining, by the first communication device, resource allocation for the wireless device based on the buffer size report information.

[0142] Figure 8 Another example flow chart representation of a method of digital communication according to one or more embodiments of the present technology is shown. Operation 802 includes sending, by a wireless device, a signal including configuration information to a communication device, wherein the configuration information includes a first set of capability indications for a first network environment and a second set of capability indications for a second network environment, wherein at least one capability indication in the first set of capability indications and at least one capability indication in the second set of capability indications indicate the same feature capability.

[0143] Figures 6 to 8 Various preferred embodiments and additional features of the above method are as follows. Further examples are described with reference to Examples 1 to 6.

[0144] In some embodiments, the cache size reporting information includes at least one of: 1) an existing cache size level, 2) an existing cache size level for finer granularity interpolation, 3) a TB size value(s), or 4) multiple TB size values(s).

[0145] In some embodiments, the time information includes at least one of the following items: 1) the elapsed time since the packet arrived at the first wireless device, 2) the remaining time before the elapsed time since the packet arrived at the wireless device reaches the delay budget, 3) the remaining time before the expiration time limit, 4) the arrival time of the packet at the wireless device, 5) an indication of whether the packet corresponding to the buffer size should be scheduled or sent immediately, 6) the elapsed time since the packet data unit (PDU) set arrived at the first wireless device; 7) the remaining time before the elapsed time since the PDU set arrived at the wireless device reaches the delay budget, or 8) the arrival time of the PDU set at the wireless device, 9) an indication of whether the PDU set corresponding to the buffer size should be scheduled or sent immediately.

[0146] In some embodiments, the identification information is at least one of the following: 1) a logical channel group (LCG) identifier, 2) a radio bearer identifier, or 3) a logical channel identifier.

[0147] In some embodiments, the buffer size information indicates an amount of data available for all logical channels mapped to the identification information corresponding to the time information.

[0148] In some embodiments, the method further includes receiving, by the wireless device, second configuration information from a second communication device.

[0149] In some embodiments, the second communications device is at least one of: 1) a gNB, or 2) a core network.

[0150] In some embodiments, the second configuration information includes at least one of: 1) a packet delay budget, 2) an access network (AN) packet delay budget, 3) a packet data unit (PDU) set delay budget, or 4) an AN PDU set delay budget.

[0151] In some embodiments, the second configuration information is based on at least one of: 1) a quality of service (QoS) flow, 2) a data radio bearer (DRB), or 3) a logical channel.

[0152] The present invention discloses another wireless communication method, comprising: a wireless device sends a signal including configuration information to a communication device, wherein the configuration information includes a first group of capability indications for a first network environment and a second group of capability indications for a second network environment, wherein at least one capability indication in the first group of capability indications and at least one capability indication in the second group of capability indications indicate the same characteristic capability.

[0153] In some embodiments, the process includes determining an increment of the transmission resource, wherein the increment is dependent on an index indicating a remaining time for completion of the transmission.

[0154] In some embodiments, the increment is further dependent on a time elapsed indicating: 1) the elapsed time since the packet arrived at the wireless device before reaching a delay budget, 2) the time remaining before a discard time limit, or 3) a predetermined time remaining.

[0155] In some embodiments, the increment is determined by priority bit rate (PBR)×T×1 / residual T, where PBR is the priority bit rate configured by the communication device, where T is the time elapsed since the increment was last increased; where residual T is: 1) the remaining time before the elapsed time since the packet arrived at the wireless device, 2) the remaining time before a discard time limit, or 3) a predetermined remaining time.

[0156] In some embodiments, the process includes setting the transmission resource of the highest transmission priority based on an index and a threshold indicating a remaining time for the transmission to complete, wherein the remaining time is equal to or less than a predetermined remaining time threshold.

[0157] In some embodiments, the remaining time is at least one of: 1) the remaining time before the elapsed time since the packet arrived at the wireless device reaches a delay budget, 2) the remaining time before a discard time limit, or 3) a predetermined remaining time.

[0158] In some embodiments, the threshold is sent from the communication device to the wireless device via signaling.

[0159] In some embodiments, the process includes setting a priority for transmission resources among the transmission resources based on identification information received by the wireless device from the communication device.

[0160] In some embodiments, the identification information is at least one of: 1) logicalChannelID, 2) logical channel group (LCG) ID, or 3) data radio bearer (DRB) ID.

[0161] Another wireless communication method is disclosed, comprising: sending a signal including configuration information by a wireless device to a communication device, wherein the configuration information includes a first set of capabilities for a first network environment and a second set of capabilities for a second network environment, wherein at least one capability in the first set of capability indications and at least one capability indication in the second set of capability indications indicate the same characteristic capability.

[0162] In some embodiments, the first network environment is a terrestrial network (TN).

[0163] In some embodiments, the second network environment is a non-terrestrial network (NTN).

[0164] In some embodiments, capability indications in the first group of capabilities are applied to the second group of capabilities when corresponding capability indications in the second group of capabilities are not included; wherein, when capability indications in the second group of capabilities are included, capability indications in the second group of capabilities are applied to the second group of capabilities.

[0165] It should be understood that the present document discloses methods and apparatus related to reporting buffer size and related delay budget information in a wireless communication system. In a wireless communication system (e.g., LTE, NR or 6G system), the core network may send multiple delay budgets to a wireless network element (e.g., eNB, gNB). The delay budget may include: packet delay budget (PDB), core network packet delay budget (CN PDB), PDU set delay budget (PSDB) and core network PDU set delay budget (CN PSDB). Based on the PDB and CN PDB, the 5G access network packet delay budget (5G-AN PDB) may be determined. Similarly, the 5G access network packet delay budget (5G-AN PSDB) may be determined by subtracting the CNPDDB from the PSDB. Under the existing system, when the wireless network element allocates UL authorization to the UE, the wireless network element cannot know how long the UL packet is buffered before sending the BSR, and the remaining ANPDB can be used for transmission, which may cause unnecessary delays and inefficient communications. In addition, based on the current specification, PDB and CN PDB are configured per QoS flow, but BSR is reported per logical channel group (LCG), and one LCG may include multiple logical channels. Therefore, even if the UE reports the remaining AN PDB per LCG, the radio network element cannot determine which logical channel the remaining AN PDB corresponds to. And for non-standardized 5QI cases, the UE cannot know the PDB and cannot determine the remaining AN PDB.

[0166] In addition, when receiving the UL grant, the UE should prioritize the logical channels (Logical Channel Prioritization, LCP) and select one or more logical channels with data to be transmitted. Based on the current specification, only the PBR (Priority Bit Rate) and the elapsed time of data being buffered in the UE are considered, and the remaining PDB is not considered, which may cause delays and inefficiencies in the communication process. The present application proposes a variety of methods to overcome the above problems.

[0167] The disclosed and other embodiments, modules and functional operations described in this document may be implemented in digital electronic circuits, or computer software, firmware or hardware including the structures disclosed in this document and their structural equivalents, or in a combination of one or more of them. The disclosed and other embodiments may be implemented as one or more computer program products, i.e., modules of one or more computer program instructions, which are encoded on a computer-readable medium, executed by a data processing device or controlling the operation of the data processing device. The computer-readable medium may be a machine-readable storage device, a machine-readable storage substrate, a memory device, a material composition that affects a machine-readable propagation signal, or a combination of one or more of them. The term "data processing device" covers all devices, equipment and machines for processing data, including, for example, a programmable processor, a computer or multiple processors or computers. In addition to hardware, the device may also include code that creates an execution environment for a related computer program, such as code that constitutes a processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them. A propagated signal is an artificially generated signal, such as a machine-generated electrical signal, an optical signal, or an electromagnetic signal, which is generated to encode information for transmission to a suitable receiving device.

[0168] A computer program (also referred to as a program, software, software application, script, or code) may be written in any form of programming language, including compiled or interpreted languages, and may be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program may be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language file), in a single file dedicated to a related program, or in multiple coordinated files (e.g., files that store one or more modules, subroutines, or portions of code). A computer program may be deployed on a single computer or executed on multiple computers located at a single site or distributed across multiple sites and interconnected by a communications network.

[0169] The processes and logic flows described in this document may be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows may also be performed by, and apparatus may be implemented as, special purpose logic circuitry, such as an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit).

[0170] Processors suitable for executing computer programs include, for example, general-purpose and special-purpose microprocessors, and one or more processors in any type of digital computer. Typically, the processor will receive instructions and data from a read-only memory or a random access memory or both. The essential elements of a computer are a processor for executing instructions and one or more memory devices for storing instructions and data. Typically, a computer will also include one or more mass storage devices (such as magnetic disks, magneto-optical disks, or optical disks) for storing data, or be operably coupled to receive data from it or transmit data to it or both. However, a computer does not require such a device. Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media, and memory devices, including, for example, semiconductor memory devices, such as EPROM, EEPROM, and flash memory devices; magnetic disks, such as internal hard disks or removable disks; magneto-optical disks; and CD ROM and DVD-ROM disks. The processor and memory can be supplemented by, or incorporated into, dedicated logic circuits.

[0171] Although this document contains many details, these details should not be interpreted as limitations on the scope of the claimed invention or the invention that may be claimed, but should be interpreted as descriptions of the features of specific embodiments. Certain features described in the context of a separate embodiment in this document may also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment may also be implemented separately or in any suitable sub-combination in multiple embodiments. In addition, although features may be described as working in certain combinations and even initially claimed, in some cases, one or more features in the claimed combination may be deleted from the combination, and the claimed combination may be for a sub-combination or a variant of a sub-combination. Similarly, although operations are depicted in a particular order in the figure, this should not be understood as requiring that the operations be performed in the particular order shown or in sequence, or that all the operations shown be performed to achieve the desired result.

[0172] Only a few examples and implementations are disclosed. Variations, modifications, and enhancements may be made to the examples and implementations and other implementations based on the disclosed content.

Claims

1. A method for wireless communication, comprising: A signal including buffer size report information is sent by the wireless device to the first communication device, wherein the buffer size report information includes identification information, buffer size information and time information.

2. A method for digital communication, comprising: Receiving, by the first communication device, a signal including buffer size report information sent by the wireless device, wherein the buffer size report includes identification information, buffer size information, and time information; as well as Resource allocation for the wireless device is determined by the first communications device based on the buffer size reporting information.

3. The method according to claim 1 or 2, wherein: The cache size reporting information includes at least one of: 1) an existing cache size level, 2) an existing cache size level for finer granularity interpolation, 3) a TB size value, or 4) multiple TB size values.

4. The method of claim 1 or 2, wherein the time information comprises at least one of the following: 1) the elapsed time since the packet arrived at the first wireless device, 2) the remaining time before the elapsed time since the packet arrived at the wireless device reaches the delay budget, 3) the remaining time before the expiration time limit, 4) the arrival time of the packet at the wireless device, 5) an indication indicating whether the packet corresponding to the buffer size should be scheduled or sent immediately, 6) the elapsed time since the packet data unit (PDU) set arrived at the first wireless device; 7) the remaining time before the elapsed time since the PDU set arrived at the wireless device reaches the delay budget, or 8) the arrival time of the PDU set at the wireless device, 9) an indication indicating whether the PDU set corresponding to the buffer size should be scheduled or sent immediately.

5. The method according to claim 1 or 2, wherein the identification information is at least one of the following items: 1) a logical channel group (LCG) identifier, 2) a radio bearer identifier, or 3) a logical channel identifier. 6 . The method according to claim 1 , wherein the buffer size information indicates an amount of data available for all logical channels mapped to the identification information corresponding to the time information.

7. The method according to claim 1, further comprising: Second configuration information is received by the wireless device from a second communication device.

8. The method of claim 7, wherein the second communication device is at least one of the following: 1) a gNB, or 2) a core network.

9. The method of claim 7, wherein the second configuration information comprises at least one of: 1) a packet delay budget, 2) an access network (AN) packet delay budget, 3) a packet data unit (PDU) set delay budget, or 4) an AN PDU set delay budget.

10. The method of claim 7, wherein the second configuration information is based on at least one of: 1) a quality of service (QoS) flow, 2) a data radio bearer (DRB), or 3) a logical channel.

11. A method for wireless communication, comprising: Information about at least one transmission resource is sent by a wireless device based on a logical channel priority determined by a process.

12. The method of claim 11, wherein the process comprises: An increment for transmission resources is determined, wherein the increment depends on an index indicating a remaining time for completion of the transmission.

13. The method of claim 12, wherein the increment is also dependent on an elapsed time, the elapsed time indicating: 1) a remaining time before the elapsed time since the packet arrived at the wireless device reaches a delay budget, 2) a remaining time before a discard time limit, or 3) a predetermined remaining time.

14. A method according to claim 12, wherein the increment is determined by priority bit rate (PBR)×T×1 / remaining T, wherein PBR is the priority bit rate configured by the communication device, wherein T is the time elapsed since the increment was last increased; wherein remaining T is: 1) the remaining time before the elapsed time since the packet arrived at the wireless device, 2) the remaining time before the discard time limit, or 3) a predetermined remaining time.

15. The method of claim 11, wherein the process comprises: A transmission resource of the highest transmission priority is set based on an index indicating a remaining time for transmission completion and a threshold, wherein the remaining time is equal to or less than a predetermined remaining time threshold.

16. The method of claim 15, wherein the remaining time is at least one of: 1) the remaining time before the elapsed time since the packet arrived at the wireless device reaches a delay budget, 2) the remaining time before a discard time limit, or 3) a predetermined remaining time. The method of claim 16 , wherein the threshold is sent from the communication device to the wireless device by signaling.

18. The method of claim 11, wherein the process comprises: Priorities for transmission resources among the transmission resources are set based on identification information received by the wireless device from a communication device.

19. The method of claim 18, wherein the identification information is at least one of the following: 1) a logical channel ID, 2) a logical channel group (LCG) ID, or 3) a data radio bearer (DRB) ID.

20. A method for wireless communication, comprising: A signal including configuration information is sent by a wireless device to a communication device, wherein the configuration information includes a first set of capability values ​​for a first network environment and a second set of capability values ​​for a second network environment, wherein at least one capability indication in the first set of capability indications and at least one capability indication in the second set of capability indications indicate the same characteristic capability.

21. The method of claim 20, wherein the first network environment is a terrestrial network (TN).

22. The method of claim 20, wherein the second network environment is a non-terrestrial network (NTN).

23. A method according to claim 20, wherein when the corresponding capability indication in the second group of capabilities is not included, the capability indication in the first group of capabilities is applied to the second group of capabilities; wherein when the capability indication in the second group of capabilities is included, the capability indication in the second group of capabilities is applied to the second group of capabilities.

24. An apparatus for a communication network, comprising: A processor, the processor being configured to implement the method according to any one of claims 1 to 23.

25. A computer-readable storage medium having codes stored thereon, which, when executed by a processor, cause the processor to implement the method of any one of claims 1 to 23.

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