CN115088363A - Method, apparatus, and computer-readable medium for buffering status reports - Google Patents

Abstract

Disclosed is a method for buffering status reports. One example method may include: receiving configuration information related to a plurality of resources for buffering status reports; selecting one resource from the plurality of resources for a buffer status report triggered on a logical channel; and sending the triggered buffer status report via the selected resource. Related apparatus and computer readable media are also disclosed.

Description

Method, apparatus, and computer readable medium for buffer status reporting

Technical Field

Various example embodiments relate to methods, apparatuses, and computer readable media for buffering status reports.

Background

In a communication network or system that may suffer from large scheduling delays, such as non-terrestrial networks (NTNs), a process of scheduling uplink data by Scheduling Request (SR) and Buffer Status Report (BSR), which may also be referred to as an SR/BSR process, may be utilized.

Disclosure of Invention

In a first aspect, an apparatus is disclosed, comprising: at least one processor and at least one memory, wherein the at least one memory may include computer program code, and the at least one memory and the computer program code may be configured to, with the at least one processor, cause the apparatus to perform: receiving configuration information related to a plurality of resources for buffering status reports; selecting one resource from the plurality of resources for a buffer status report triggered on a logical channel; and sending the triggered buffer status report via the selected resource.

In some example embodiments, the selecting may be based on at least one of a comparison between a quality of service requirement of the logical channel and an estimated scheduling delay of the plurality of resources.

In some example embodiments, the estimated scheduling delay of the selected resource from the initial available occasion of the selected resource after the trigger time slot of the buffer status report ends earlier than the estimated scheduling delay of at least another resource among the plurality of resources from a corresponding initial available occasion of the at least another resource after the trigger time slot of the buffer status report.

In some example embodiments, the estimated scheduling delay of a resource for the comparison between the plurality of resources is dependent on at least one of a reference round trip time, a latency class of the resource for the comparison, and an initial available opportunity of the resource for the comparison after a trigger slot of the buffer status report.

In some example embodiments, the selected resource corresponds to an initially available resource with a high latency category after a trigger slot of the buffer status report, the at least another resource corresponds to an initially available resource with a low latency category after a trigger slot of the buffer status report, an initial available occasion of the selected resource is earlier than the initial available occasion of the at least another resource, and a time interval between the initial available occasion of the selected resource and the initial available occasion of the at least another resource is greater than or equal to a reference round trip time.

In some example embodiments, the selected resource corresponds to an initially available resource with a low latency category after a trigger slot of the buffer status report, the at least another resource corresponds to an initially available resource with a high latency category after a trigger slot of the buffer status report, and an initial available occasion of the selected resource is earlier than the initial available occasion of the at least another resource, or a time interval between an initial available occasion of the selected resource and the initial available occasion of the at least another resource is less than or equal to a reference round trip time.

In some example embodiments, the at least one memory and the computer program code may be configured to, with the at least one processor, further cause the apparatus to perform: receiving information related to the reference round trip time via a broadcast channel.

In some example embodiments, the at least one memory and the computer program code may be configured to, with the at least one processor, further cause the apparatus to perform: the reference round trip time is determined based on at least one of position information and satellite ephemeris data.

In some example embodiments, the plurality of resources correspond to a single latency category and the selected resource corresponds to an initially available resource among the plurality of resources after a trigger slot of the buffer status report.

In some example embodiments, the logical channel is delay tolerant based on a quality of service requirement of the logical channel, and the resource utilization of the selected resource is higher than a resource utilization of at least another resource among the plurality of resources.

In some example embodiments, the plurality of resources comprises at least one of random access channel resources, configured grant resources, and physical uplink control channel scheduling request resources.

In some example embodiments, the selected resource corresponds to the random access channel resource, and the buffer status report is maintained after the buffer status report is transmitted via the selected resource through an uplink message of a random access procedure.

In some example embodiments, the at least one memory and the computer program code may be configured to, with the at least one processor, further cause the apparatus to perform: canceling the buffer status report after receiving a downlink acknowledgement message for an uplink message of the random access procedure.

In some example embodiments, the at least one memory and the computer program code may be configured to, with the at least one processor, further cause the apparatus to perform: retransmitting the buffer status report via another available resource or a dynamically granted resource among the plurality of resources after transmitting the buffer status report via the selected resource and before receiving a downlink acknowledgement message for an uplink message of the random access procedure; canceling the buffer status report after the retransmission; and aborting the random access procedure.

In some example embodiments, the another available resource corresponds to the configured authorized resource.

In some example embodiments, the buffer status report comprises information related to the time of triggering the buffer status report or the time of multiplexing the buffer status report.

In some example embodiments, the information related to a time at which the buffer status report is triggered or a time at which the buffer status report is multiplexed includes a system frame number and a slot number of the buffer status report.

In a second aspect, a method is disclosed, comprising: receiving configuration information related to a plurality of resources for buffering status reports; selecting one resource from the plurality of resources for a buffer status report triggered on a logical channel; and sending the triggered buffer status report via the selected resource.

In some example embodiments, the selecting may be based on at least one of a comparison between a quality of service requirement of the logical channel and an estimated scheduling delay of the plurality of resources.

In some example embodiments, the estimated scheduling delay of the selected resource from the initial available occasion of the selected resource after the trigger time slot of the buffer status report ends earlier than the estimated scheduling delay of at least another resource among the plurality of resources from a corresponding initial available occasion of the at least another resource after the trigger time slot of the buffer status report.

In some example embodiments, the estimated scheduling delay of a resource for comparison between the plurality of resources depends on at least one of a reference round trip time, a latency class of the resource for the comparison, and an initial available opportunity of the resource for the comparison after a trigger slot of the buffer status report.

In some example embodiments, the selected resource corresponds to an initially available resource with a high latency category after a trigger slot of the buffer status report, the at least another resource corresponds to an initially available resource with a low latency category after a trigger slot of the buffer status report, an initial available occasion of the selected resource is earlier than an initial available occasion of the at least another resource, and a time interval between the initial available occasion of the selected resource and the initial available occasion of the at least another resource is greater than or equal to a reference round trip time.

In some example embodiments, the selected resource corresponds to an initially available resource with a low latency category after a trigger slot of the buffer status report, the at least another resource corresponds to an initially available resource with a high latency category after a trigger slot of the buffer status report, and an initial available occasion of the selected resource is earlier than an initial available occasion of the at least another resource, or a time interval between the initial available occasion of the selected resource and the initial available occasion of the at least another resource is less than or equal to a reference round trip time.

In some example embodiments, the method may further comprise: receiving information related to the reference round trip time via a broadcast channel.

In some example embodiments, the method may further comprise: the reference round trip time is determined based on at least one of position information and satellite ephemeris data.

In some example embodiments, the plurality of resources correspond to a single latency category and the selected resource corresponds to an initially available resource among the plurality of resources after a trigger slot of the buffer status report.

In some example embodiments, the logical channel is delay tolerant based on a quality of service requirement of the logical channel, and the resource utilization of the selected resource is higher than a resource utilization of at least another resource among the plurality of resources.

In some example embodiments, the plurality of resources comprises at least one of random access channel resources, configured grant resources, and physical uplink control channel scheduling request resources.

In some example embodiments, the selection resource corresponds to the random access channel resource, and the buffer status report is maintained after the buffer status report is transmitted via the selection resource through an uplink message of a random access procedure.

In some example embodiments, the method may further comprise: canceling the buffer status report after receiving a downlink acknowledgement message for an uplink message of the random access procedure.

In some example embodiments, the method may further include: retransmitting the buffer status report via another available resource or a dynamically granted resource among the plurality of resources after transmitting the buffer status report via the selected resource and before receiving a downlink acknowledgement message for an uplink message of the random access procedure; canceling the buffer status report after the retransmission; and aborting the random access procedure.

In some example embodiments, the another available resource corresponds to the configured authorized resource.

In some example embodiments, the buffer status report comprises information related to the time of triggering the buffer status report or the time of multiplexing the buffer status report.

In some example embodiments, the information related to a time at which the buffer status report is triggered or a time at which the buffer status report is multiplexed includes a system frame number and a slot number of the buffer status report.

In a third aspect, an apparatus is disclosed, comprising: means for receiving configuration information related to a plurality of resources for buffering status reports; means for selecting one resource from the plurality of resources for a buffer status report triggered on a logical channel; and means for sending a triggered buffer status report via the selected resource.

In some example embodiments, the selecting may be based on at least one of a comparison between a quality of service requirement of the logical channel and an estimated scheduling delay of the plurality of resources.

In some example embodiments, the estimated scheduling delay of the selected resource from the initial available occasion of the selected resource after the trigger time slot of the buffer status report ends earlier than the estimated scheduling delay of at least another resource among the plurality of resources from a corresponding initial available occasion of the at least another resource after the trigger time slot of the buffer status report.

In some example embodiments, the estimated scheduling delay of a resource for comparison between the plurality of resources depends on at least one of a reference round trip time, a latency class of the resource for the comparison, and an initial available opportunity of the resource for the comparison after a trigger slot of the buffer status report.

In some example embodiments, the selected resource corresponds to an initially available resource with a high latency category after a trigger slot of the buffer status report, the at least another resource corresponds to an initially available resource with a low latency category after a trigger slot of the buffer status report, an initial available occasion of the selected resource is earlier than an initial available occasion of the at least another resource, and a time interval between the initial available occasion of the selected resource and the initial available occasion of the at least another resource is greater than or equal to a reference round trip time.

In some example embodiments, the selected resource corresponds to an initially available resource with a low latency category after a trigger slot of the buffer status report, the at least another resource corresponds to an initially available resource with a high latency category after a trigger slot of the buffer status report, and an initial available occasion of the selected resource is earlier than an initial available occasion of the at least another resource, or a time interval between the initial available occasion of the selected resource and the initial available occasion of the at least another resource is less than or equal to a reference round trip time.

In some example embodiments, the apparatus may further include: means for receiving information related to the reference round trip time via a broadcast channel.

In some example embodiments, the apparatus may further include: means for determining the reference round trip time based on at least one of position information and satellite ephemeris data.

In some example embodiments, the plurality of resources correspond to a single latency category and the selected resource corresponds to an initially available resource of the plurality of resources after a trigger slot of the buffer status report.

In some example embodiments, the logical channel is delay tolerant based on a quality of service requirement of the logical channel, and the resource utilization of the selected resource is higher than a resource utilization of at least another resource of the plurality of resources.

In some example embodiments, the plurality of resources comprises at least one of random access channel resources, configured grant resources, and physical uplink control channel scheduling request resources.

In some example embodiments, the selected resource corresponds to the random access channel resource, and the buffer status report is maintained after the buffer status report is transmitted via the selected resource by an uplink message of a random access procedure.

In some example embodiments, the apparatus may further include: means for canceling the buffer status report after receiving downlink acknowledgement information for uplink information of the random access procedure.

In some example embodiments, the apparatus may further include: means for retransmitting the buffer status report via another available resource or a dynamic grant resource among the plurality of resources after transmitting the buffer status report via the selected resource and before receiving a downlink acknowledgment message for an uplink message of the random access procedure; means for canceling the buffer status report after the retransmission; and means for aborting the random access procedure.

In some example embodiments, the another available resource corresponds to the configured authorized resource.

In some example embodiments, the buffer status report comprises information related to the time of triggering the buffer status report or the time of multiplexing the buffer status report.

In some example embodiments, the information related to a time at which the buffer status report is triggered or a time at which the buffer status report is multiplexed includes a system frame number and a slot number of the buffer status report.

In a fourth aspect, a computer-readable medium is disclosed, comprising instructions stored thereon for causing an apparatus to perform: receiving configuration information related to a plurality of resources for buffering status reports; selecting one resource from the plurality of resources for a buffer status report triggered on a logical channel; and sending the triggered buffer status report via the selected resource.

In some example embodiments, the selecting may be based on at least one of a comparison between a quality of service requirement of the logical channel and an estimated scheduling delay of the plurality of resources.

In some example embodiments, the estimated scheduling delay of the selected resource from the initial available occasion of the selected resource after the trigger time slot of the buffer status report ends earlier than the estimated scheduling delay of at least one resource among the plurality of resources from the corresponding initial available occasion of the at least another resource after the trigger time slot of the buffer status report.

In some example embodiments, the estimated scheduling delay of a resource for the comparison between the plurality of resources is dependent on at least one of a reference round trip time, a latency class of the resource for the comparison, and an initial available opportunity of the resource for the comparison after a trigger time slot of the buffer status report.

In some example embodiments, the selected resource corresponds to an initially available resource with a high latency category after a trigger slot of the buffer status report, the at least another resource corresponds to an initially available resource with a low latency category after a trigger slot of the buffer status report, an initial available occasion of the selected resource is earlier than the initial available occasion of the at least another resource, and a time interval between the initial available occasion of the selected resource and the initial available occasion of the at least another resource is greater than or equal to a reference round trip time.

In some example embodiments, the selected resource corresponds to an initial available resource with a low latency category after a trigger slot of the buffer status report, the at least another resource corresponds to an initial available resource with a high latency category after a trigger slot of the buffer status report, and an initial available occasion of the selected resource is earlier than the initial available occasion of the at least another resource, or a time interval between an initial available occasion of the selected resource and the initial available occasion of the at least another resource is less than or equal to a reference round trip time.

In some example embodiments, the instructions further cause the apparatus to perform: receiving information related to the reference round trip time via a broadcast channel.

In some example embodiments, the instructions further cause the apparatus to perform: the reference round trip time is determined based on at least one of position information and satellite ephemeris data.

In some example embodiments, the plurality of resources correspond to a single latency category and the selected resource corresponds to an initially available resource of the plurality of resources after a trigger slot of the buffer status report.

In some example embodiments, the logical channel is delay tolerant based on a quality of service requirement of the logical channel, and the resource utilization of the selected resource is higher than a resource utilization of at least another resource of the plurality of resources.

In some example embodiments, the plurality of resources comprises at least one of random access channel resources, configured grant resources, and physical uplink control channel scheduling request resources.

In some example embodiments, the selected resource corresponds to the random access channel resource, and the buffer status report is maintained after the buffer status report is transmitted via the selected resource by an uplink message of a random access procedure.

In some example embodiments, the instructions further cause the apparatus to perform: canceling the buffer status report after receiving a downlink acknowledgement message for an uplink message of the random access procedure.

In some example embodiments, the instructions further cause the apparatus to perform: retransmitting the buffer status report via another available resource or a dynamic grant resource among the plurality of resources after transmitting the buffer status report via the selected resource and before receiving a downlink acknowledgement message for an uplink message of the random access procedure; canceling the buffer status report after the retransmission; and aborting the random access procedure.

In some example embodiments, the another available resource corresponds to the configured authorized resource.

In some example embodiments, the buffer status report comprises information related to the time of triggering the buffer status report or the time of multiplexing the buffer status report.

In some example embodiments, the information related to a time at which the buffer status report is triggered or a time at which the buffer status report is multiplexed includes a system frame number and a slot number of the buffer status report.

In a fifth aspect, an apparatus is disclosed, comprising: at least one processor and at least one memory, wherein the at least one memory may include computer program code, and the at least one memory and the computer program code may be configured to, with the at least one processor, cause the apparatus to perform: transmitting configuration information related to a plurality of resources for buffering status reports; and receiving a buffer status report triggered on a logical channel via one of the plurality of resources.

In some example embodiments, the at least one memory and the computer program code may be configured to, with the at least one processor, further cause the apparatus to perform: information relating to the reference round trip time is broadcast.

In some example embodiments, the plurality of resources comprises at least one of random access channel resources, configured grant resources, and physical uplink control channel scheduling request resources.

In some example embodiments, the resource corresponds to a random access channel resource, and the buffer status report includes information on the time to trigger the buffer status report or the time to multiplex the buffer status report.

In some example embodiments, the information related to the time at which the buffer status report is triggered or the time at which the buffer status report is multiplexed comprises a system frame number and a slot number of the buffer status report.

In some example embodiments, the at least one memory and the computer program code may be configured to, with the at least one processor, further cause the apparatus to perform: receiving another buffer status report via another one of the plurality of resources or a dynamically granted resource between receiving the buffer status report via an uplink message of a random access procedure via the resource and transmitting a downlink acknowledgement message of the uplink message of the random access procedure; and aborting the random access procedure in case the buffer status report and the further buffer status report comprise the same information related to the time the buffer status report was triggered or the time the buffer status report was multiplexed.

In a sixth aspect, a method is disclosed, comprising: transmitting configuration information related to a plurality of resources for buffering status reports; and receiving a buffer status report triggered on a logical channel via one of the plurality of resources.

In some example embodiments, the method may further comprise: information relating to the reference round trip time is broadcast.

In some example embodiments, the plurality of resources comprises at least one of random access channel resources, configured grant resources, and physical uplink control channel scheduling request resources.

In some example embodiments, the resource corresponds to a random access channel resource, and the buffer status report includes information related to the time to trigger the buffer status report or the time to multiplex the buffer status report.

In some example embodiments, the information related to the time at which the buffer status report is triggered or the time at which the buffer status report is multiplexed includes a system frame number and a slot number of the buffer status report.

In some example embodiments, the method may further include: receiving another buffer status report via another one of the plurality of resources or a dynamically granted resource between receiving the buffer status report via an uplink message of the resource through a random access procedure and sending a downlink acknowledgement message for the uplink message of the random access procedure; and aborting the random access procedure in case the buffer status report and the further buffer status report comprise the same information related to the time at which the buffer status report is triggered or the time at which the buffer status report is multiplexed.

In a seventh aspect, an apparatus is disclosed, comprising: means for transmitting configuration information related to a plurality of resources for buffering status reports; and means for receiving a buffer status report triggered on a logical channel via one of the plurality of resources.

In some example embodiments, the apparatus may further include: means for broadcasting information related to a reference round trip time.

In some example embodiments, the plurality of resources comprises at least one of random access channel resources, configured grant resources, and physical uplink control channel scheduling request resources.

In some example embodiments, the resource corresponds to a random access channel resource, and the buffer status report includes information related to the time to trigger the buffer status report or the time to multiplex the buffer status report.

In some example embodiments, the information related to the time at which the buffer status report is triggered or the time at which the buffer status report is multiplexed includes a system frame number and a slot number of the buffer status report.

In some example embodiments, the apparatus may further include: means for receiving another buffer status report via another one of the plurality of resources or a dynamic grant resource between receiving the buffer status report via an uplink message of a random access procedure via the resource and sending a downlink acknowledgement message of the uplink message of the random access procedure; and means for aborting the random access procedure if the buffer status report and the further buffer status report comprise the same information related to the time at which the buffer status report was triggered or the time at which the buffer status report was multiplexed.

In an eighth aspect, a computer-readable medium is disclosed, comprising instructions stored thereon for causing an apparatus to perform: transmitting configuration information related to a plurality of resources of the buffer status report; and receiving a buffer status report triggered on a logical channel via one of the plurality of resources.

In some example embodiments, the instructions further cause the apparatus to perform: information relating to the reference round trip time is broadcast.

In some example embodiments, the plurality of resources comprises at least one of random access channel resources, configured grant resources, and physical uplink control channel scheduling request resources.

In some example embodiments, the resource corresponds to a random access channel resource, and the buffer status report includes information related to a time at which the buffer status report is triggered or a time at which the buffer status report is multiplexed.

In some example embodiments, the information related to a time at which the buffer status report is triggered or a time at which the buffer status report is multiplexed includes a system frame number and a slot number of the buffer status report.

In some example embodiments, the instructions further cause the apparatus to perform: receiving another buffer status report via another resource or a dynamic grant resource of the plurality of resources between receiving the buffer status report via an uplink message of a random access procedure via the resource and transmitting a downlink acknowledgement message for the uplink message of the random access procedure; and aborting the random access procedure in case the buffer status report and the further buffer status report comprise the same information related to the time the buffer status report was triggered or the time the buffer status report was multiplexed.

Drawings

Some exemplary embodiments will now be described, by way of non-limiting example, with reference to the accompanying drawings.

Fig. 1 illustrates example operations and example information for reporting a BSR in one example embodiment.

Fig. 2 shows an example of BSR resource selection in one embodiment.

Fig. 3 shows an example of BSR resource selection in one embodiment.

Fig. 4 shows an example of BSR resource selection in one embodiment.

Fig. 5 shows an example of BSR resource selection in one embodiment.

Fig. 6 shows an example of BSR cancellation in one embodiment.

Fig. 7 shows an example of BSR cancellation in one embodiment.

Fig. 8 illustrates an example method for BSR reporting in one embodiment.

Fig. 9 illustrates an example apparatus for BSR reporting in one embodiment.

Fig. 10 illustrates an example apparatus for BSR reporting in one embodiment.

Fig. 11 shows an example method for BSR reporting in one embodiment.

Fig. 12 illustrates an example apparatus for BSR reporting in one embodiment.

Fig. 13 illustrates an example apparatus for BSR reporting in one embodiment.

Detailed Description

For example, in a communication network or system such as NTN, a mobile station or User Equipment (UE) may send an SR to a Base Station (BS) via a Physical Uplink Control Channel (PUCCH) to inform the BS of the arrival of new uplink data and the triggering of a BSR event. The UE may then transmit a BSR to the BS to inform the BS, for example, of the amount of uplink data to be transmitted, so that the BS may determine how to allocate uplink resources to the UE for transmitting new uplink data. Such SR/BSR procedures may have a required low resource overhead, but there may be a significant delay from the arrival of data at the UE's buffer to the scheduling of uplink data using appropriately allocated resources suitable for the data and the required quality of service (QoS), e.g., possibly at a level of at least 2 round-trip times (RTTs).

In addition to SR/BSR procedures based on PUCCH SR resources, one or more other options may be used in a communication network or system such as NTN to schedule uplink data.

For example, Configured Grant (CG) resources may be used to report BSRs, and possibly even to transmit new uplink data if the CG resources are large enough and uplink data may be transmitted in the grant. For example, reporting a BSR via CG resources may have a latency of 0 or 1RTT level, but may involve large overhead and/or a trade-off between latency and overhead.

In another example, a Random Access (RA) procedure (e.g., a 2-step RA procedure or a 4-step RA procedure) may be used to report the BSR and possibly even to transmit new uplink data if the allocated Random Access Channel (RACH) resources are large enough to still transmit uplink data. For example, a BSR report based on a 2-step RA procedure may have a latency of 0 or 1RTT level, but requires RACH resources.

In another example, dynamic scheduling (e.g., dynamic grant) may also be used to report BSRs, possibly with new uplink data.

In one or more example embodiments, a plurality of BSR reporting resources (also referred to herein as resources or BSR resources) may be configured to the UE, and the UE may select at least one BSR reporting resource from the plurality of BSR reporting resources for reporting a BSR triggered on a Logical Channel (LCH).

Fig. 1 illustrates example operations and example information for reporting a BSR in one example embodiment.

As shown in fig. 1, a Base Station (BS)101 may configure a plurality of BSR resources to a UE102, and may transmit configuration information 103 related to the respective BSR resources to the UE102 in any suitable manner.

In various example embodiments, the plurality of BSR resources may include, but are not limited to, one or more of: CG resources, 2-step RACH resources, 4-step RACH resources, PUCCH SR resources, and any other resources currently or in the future suitable for transmitting BSR.

For example, the plurality of BSR resources may include one or more types of resources semi-statically configured by the BS101 for the UE 102. For example, one BSR resource among the plurality of BSR resources may be configured by the BS101 to have a periodicity, another BSR resource among the plurality of BSR resources may be configured by the BS101 to have another periodicity, and the two periodicities may be the same or different.

Then, for example, in the case where new uplink data arrives at the buffer of the UE102 and BSR triggers, the UE102 may select at least one BSR resource from among a plurality of BSR resources in operation 105, and may then transmit the BSR 106 to the BS101 via the selected BSR resource.

In various example embodiments, the selection in operation 105 may be performed based on one or more of (but not limited to): triggering the QoS requirement of the LCH of the BSR; a comparison between estimated scheduling delays for a plurality of BSR resources; and so on. For example, the comparison may be based on one or more of (but not limited to): an initial available occasion of a corresponding BSR resource after a trigger slot of a BSR; available occasions of corresponding BSR resources after the trigger slot of the BSR; the time delay type of the BSR resource configured correspondingly; and so on.

For example, the UE102 may select a BSR resource that may introduce lower scheduling delay than one or more other BSR resources among the multiple BSR resources, e.g., the BSR resource with the smallest estimated scheduling delay among the multiple BSR resources. For example, the respective BSR resources may be configured by the BS101 to have separate periodicities, and for the respective BSR resources, the UE102 may determine one or more initial available occasions for reporting BSRs based on the information 103. Then, the UE102 may estimate and/or compare the estimated scheduling delays of the respective BSR resources based on the initial available occasion of the respective BSR resource after the trigger slot of the BSR, and may further determine a BSR resource having an expected scheduling delay (e.g., having a minimum estimated scheduling delay) based on the estimation and/or comparison.

For example, in the case where LCH is an autonomous delay tolerant service according to the LCH's QoS requirements, UE102 may select BSR resources, e.g., PUCCH SR resources, that may result in high resource utilization. For example, where the LCH is a time-sensitive service according to the QoS requirements of the LCH, the UE102 may select a BSR resource that may introduce lower scheduling delay than one or more other BSR resources among the plurality of BSR resources, e.g., the BSR resource having the smallest estimated scheduling delay among the plurality of BSR resources.

For example, the UE102 may select at least one BSR resource from the plurality of BSR resources based on available occasions of the respective BSR resources after the trigger slot of the BSR. For example, the UE102 may select an initial available resource among a plurality of BSR resources after a trigger slot of a BSR.

For example, the UE102 may fixedly select at least one BSR resource from a plurality of BSR resources. For example, the UE102 may select a RACH resource (2-step RACH resource or 4-step RACH resource) and a CG resource from among the plurality of BSR resources. In another example, the UE102 may select a RACH resource from a plurality of BSR resources and may report a BSR using both the selected resource and the dynamically granted resource.

Further details and/or examples of the selection in operation 105 are described below.

As shown in fig. 1, information 104 relating to a reference RTT (e.g., a potential maximum RTT for a cell associated with the BS 101) may be transmitted from the BS101 to the UE102 in any suitable manner, e.g., over a broadcast channel, such that the UE101 may determine an estimated scheduling delay for a correspondingly configured BSR resource based on the common reference RTT.

In another example, instead of sending the information 104, the BS101 may send signaling (not shown in fig. 1) to the UE102 to instruct the UE102 to determine the reference RTT itself. The UE102 may then determine its own reference RTT based on one or more of (but not limited to): location information of the UE 102; ephemeris data of the satellite; and the like. For example, the UE102 may communicate with a Location Management Function (LMF) entity or a location service (LCS) entity in a Core Network (CN) to obtain information such as location information of the UE102, ephemeris data of satellites, and the like. For example, the UE102 may obtain its location information from a Global Navigation Satellite System (GNSS), such as the Global Positioning System (GPS), and may obtain ephemeris data for the satellites from broadcast system information. The UE102 may then determine the reference RTT itself based on the obtained information. In another example, the UE102 may autonomously determine its own reference RTT without any information (e.g., information 104) or instructions from the BS 101.

FIG. 2 shows an example of BSR resource selection in operation 105 in one embodiment, where T ₀ Corresponds to the arrival of new uplink data at the UE102 and the timing of BSR triggering, and thus may correspond to the time origin, T, on the time axis ₁ Corresponds to T ₀ Then available opportunity, T, for BSR resource 201 ₂ Corresponds to T ₀ Then available opportunity, T, for BSR resource 202 ₃ Corresponds to T ₀ Then available opportunity of BSR resource 203, … …, T _N (N may be any positive integer) corresponds to T ₀ Then available opportunity, T, for BSR resource 204 _N+1 Corresponds to T ₀ Then the available timing of the BSR resources 205, etc., where one or more of the BSR resources 201, 202, 203, ·, 204, 205, etc. may be the same or different.

Then, in operation 105, the UE102 may reference RTT (also referred to herein as RTT) based on the respective available occasions _ref ) And a respective delay category for the respective BSR resource, determining an estimated scheduling delay from the available occasions of the BSR resource.

For example, if the potential maximum scheduling delay based on BSR resource 201 is RTT _ref L of ₁ Multiple times, then the latency class of BSR resource 201 may be L ₁ And available occasions T from BSR resources 201 ₁ The estimated scheduling delay may be L ₁ *RTT _ref And will be at T ₁ +L ₁ *RTT _ref And (6) ending. Similarly, let the latency class of the BSR resource 202 be L ₂ And the delay class of the BSR resource 203 is L ₃ Then the available opportunity T from BSR resource 202 ₂ May be L ₂ *RTT _ref And will be at T ₂ +L ₂ *RTT _ref Ending, available opportunity T from BSR resource 203 ₃ May be L ₃ *RTT _ref And will be at T ₃ +L ₃ *RTT _ref End, and so on. In different examples, L is according to BSR resources 201, 202, 203, etc ₁ 、L ₂ 、L ₃ Etc. may be the same or different.

UE102 may then select BSR resources at available occasions, resulting in T ₀ The estimated scheduling delay from the available opportunity then ends earlier than one or more other available opportunities (e.g., all other available opportunities). For example, in the example shown in fig. 2, t corresponds to BSR resource 202 ₁ ＝T ₂ +L ₂ *RTT _ref Earlier than t corresponding to BSR resource 201 ₂ ＝T ₁ +L ₁ *RTT _ref T corresponding to BSR resource 203 ₃ ＝T ₃ +L ₃ *RTT _ref Etc., so that the available opportunity T may be selected in operation 105 ₂ BSR resource 202.

Further, for example, the number of available occasions of BSR resources to be checked may be determined and dynamically adjusted during operation 105. For example, in the example shown in FIG. 2, when estimating at opportunity T ₁ The scheduling delay of the resource 201 can be determined at the available time T ₂ To T _N+1 The BSR resource 202- ₂ To T _N+1 Is at t ₂ ＝T ₁ +L ₁ *RTT _ref Before. Then, at the estimated timing T ₂ Available opportunity T when scheduling of resource 202 is delayed _N+1 The BSR resources 205 at (a) can be removed from the check because of the available occasions T ₃ To T _N Is at t ₁ ＝T ₂ +L ₂ *RTT _ref Front and back _N+1 Is at t ₁ ＝T ₂ +L ₂ *RTT _ref And then.

FIG. 3 illustrates BSR resources in operation 105 in an embodimentAnother example of choice, where T' ₀ Corresponds to the arrival of new uplink data at the UE102 and the occasion of BSR triggering, and thus may correspond to the origin of time, T 'on the time axis' ₁ Corresponds to at T' ₀ Then initial available opportunity, T ', for BSR resource 301' ₂ Corresponds to at T' ₀ Then initial available opportunity, T ', for BSR resource 302' ₃ Corresponds to at T' ₀ Then initial available opportunity, T ', for BSR resource 303' ₄ Corresponding to the initial available opportunity T 'in BSR resource 301' ₁ Another available opportunity, T ', for the next BSR resource 301' ₅ Initial available opportunity T 'corresponding to BSR resource 301' ₁ Another available occasion thereafter, etc., wherein BSR resources 301, 302, 303, etc. correspond to different BSR resources, respectively.

Then, in operation 105, the UE102 may reference RTT (RTT) based on the corresponding initial available occasion _ref ) And corresponding delay category of the BSR resource, determining an estimated scheduling delay from the initial available occasions of the BSR resource without considering those non-initial available occasions, such as the available occasions T 'of the BSR resource 301' ₄ And T' ₅ 。

For example, if the potential maximum scheduling delay based on BSR resource 301 is RTT _ref L' ₁ Then the latency category of BSR resource 301 may be L' ₁ And from initial available opportunity T 'of BSR resource 301' ₁ May be L' ₁ *RTT _ref And will be at T' ₁ +L' ₁ *RTT _ref And (6) ending. Similarly, let the latency class of BSR resource 302 be L' ₂ And the delay category of the BSR resource 303 is L' ₃ Then the initial available opportunity T 'from BSR resource 302' ₂ May be L' ₂ *RTT _ref And will be at T' ₂ +L' ₂ *RTT _ref End, initial available opportunity T 'from BSR resource 303' ₃ May be L' ₃ *RTT _ref And will be at T' ₃ +L' ₃ *RTT _ref End, and so on. In different examples, L 'according to BSR resources 301, 302, 303, etc' ₁ 、L' ₂ 、L' ₃ Etc. may be the same or different.

The UE102 may then select a BSR resource whose estimated scheduling delay from the BSR resource of the initially available occasion ends earlier than one or more other BSR resources (e.g., all other BSR resources) among the plurality of BSR resources. For example, in the example shown in FIG. 3, t 'corresponding to BSR resource 302' ₁ ＝T' ₂ +L'*2RTT _ref Earlier than t 'corresponding to BSR resource 301' ₂ ＝T' ₁ +L' ₁ *RTT _ref T 'corresponding to BSR resource 303' ₃ ＝T' ₃ +L' ₃ *RTT _ref Etc., so may be selected at available timing T 'in operation 105' ₂ BSR resource 302 at, which corresponds to being at T' ₀ Followed by an initial available opportunity for BSR resources 302.

In the example of FIG. 3, T 'is used in the selection' ₀ Subsequent initial availability occasions of corresponding BSR resources, irrespective of those availability occasions T 'such as BSR resource 301' ₄ And T' ₅ Such that the operational complexity in the selection may depend on the number of multiple BSR resources rather than the possible available occasions of the respective BSR resources and operation 105 may be performed more efficiently.

Fig. 4 shows another example of BSR resource selection in operation 105 in one embodiment, where T "corresponds to an occasion when new uplink data arrives at the UE102 and a BSR triggers, and thus may correspond to a time origin, T", on a time axis ₁ Corresponding to the position at T ″) ₀ Then the initial available opportunity, T', for BSR resource 401 ₂ Corresponding to the position at T ″) ₀ Then the initial available opportunity, T ", of BSR resource 402 ₃ Corresponding to the position at T ″) ₀ Then the initial available opportunity, T ", for BSR resource 403 ₄ Corresponding to the position at T ″) ₀ Then an initial available occasion of BSR resources 404, etc., wherein BSR resources 401, 402, 403, and 403 respectively correspond to different BSR resources.

Further, in the example shown in fig. 4, the multiple BSR resources may be categorized into one or more latency categories. For example, the potential maximum scheduling delay based on the BSR resource 401 or 402Is RTT _ref L ″' of ₁ And the time delay categories of the BSR resource 401 and the BSR 402 are the same and are both L ″ ₁ . Furthermore, let T ″) ₁ BSR 401 at is the delay class L ″ ₁ The initial available BSR resources. Similarly, let T ″) ₃ BSR 403 at is delay class L ″ ₂ Initial available BSR resources, and T ₄ "BSR 404 at" is delay class L ₃ The initial available BSR resources. Delay class L ₁ 、L″ ₂ 、L″ ₃ Etc. are different from each other.

Then, in operation 105, the estimated scheduling delay for the BSR resources of the respective latency class may be determined using the initial available occasions of those initial available BSR resources of the respective latency class, regardless of those non-initial available BSR resources of the respective latency class.

For example, in operation 105, for the latency class L ″ ₁ From T ″, of the initial available BSR resources 401 ₁ May be L ″ ₁ *RTT _ref And will be at T ″) ₁ +L″ ₁ *RTT _ref And finishing the process. Delay class L ₁ May be skipped in operation 105. Then, for delay class L ″) ₂ The initial available BSR resources 403 from T ″ ₃ May be L ″ ₃ *RTT _ref And will be at T ″) ₃ +L″ ₃ *RTT _ref And finishing the process. For delay class L ″) ₃ From T ″, the initial available BSR resources 404 ₄ May be L ″ ₄ *RTT _ref And will be at T ″) ₄ +L″ ₄ *RTT _ref And finishing the process.

UE102 may then select BSR resources, which are the initial available BSR resources from its latency class, and an estimated scheduling delay (from T ″) ₀ The initial available opportunity thereafter) is earlier than the estimated scheduling delay (from T ″) of other initially available BSR resources from other latency classes ₀ The corresponding initial availability opportunity thereafter). For example, in the example shown in FIG. 4, corresponding to the latency class L″ ₂ T "of the initial available BSR resources 403 ₁ ＝T″ ₂ +L″ ₂ *RTT _ref Earlier than corresponding to delay class L ₁ T "of the initial available BSR resources 401 ₂ ＝T″ ₁ +L″ ₁ RTT, corresponding to the delay class L ₁ T 'of the initial available BSR resource 404' ₃ ＝T' ₃ +L' ₃ *RTT _ref Etc., and thus may choose to be at available timing T ″, in operation 105 ₃ (delay class L ″) ₂ Initial available opportunity for BSR resources) 403.

In the example of fig. 4, the initial available occasions of initial available BSR resources from the respective latency classes are used for selection, so that the operational complexity in the selection may depend on the number of latency classes, and the operation 105 may be performed more efficiently.

In one example, where multiple BSR resources correspond to a single latency class, the UE102 may select an initial available BSR resource after a BSR trigger slot from the multiple BSR resources in operation 105.

In another example, where multiple BSR resources are grouped into two latency categories: a low latency category (e.g., having a scheduling delay corresponding to at most 1 reference RTT), which may include, for example, one or more of CG resources, 2-step RACH resources, and the like; and a high latency category (e.g., having a scheduling delay corresponding to at most 2 reference RTTs), which may include, for example, PUCCH SR resources, in an example variation of the selection in fig. 4, when UE102 has new uplink data and a BSR is triggered, UE102 may calculate a time interval between an initial available occasion of initial available BSR resources from the high latency category (after a BSR trigger slot) and an initial available occasion of initial available BSR resources from the low latency category (after a BSR trigger slot).

Then, if the initial available occasion of the initial available BSR resource from the high latency class is earlier than the initial available occasion of the initial available BSR resource from the low latency class and the time interval is greater than or equal to the reference RTT, the UE102 may select the initial available BSR resource from the high latency class in operation 105. If the initial available occasion of the initial available BSR resources from the high latency class is later than the initial available occasion of the initial available BSR resources from the low latency class, or if the time interval is lower than or equal to the reference RTT, the UE102 may select the initial available BSR resources from the low latency class in operation 105.

Fig. 5 shows yet another example of BSR resource selection in operation 105 in one embodiment, which may be a variation of the example of fig. 4.

In the example of FIG. 5, T' ₀ Corresponding to the arrival of new uplink data at the UE102 and the occasion of BSR triggering and thus may correspond to the origin of time on the time axis. Furthermore, the multiple BSR resources are grouped into two categories, such as the high latency category and the low latency category described above. T' ₁ Initial available opportunity, T 'corresponding to initial available BSR resources 501 (e.g., PUCCH SR resources) from a high latency class' ₁ The following T "" ₂ Available occasions corresponding to the initial available BSR resources 501 from the high latency category, and T ″' ₃ Corresponding to the initial available opportunity for the initial available BSR resources 502 (e.g., CG resources) from the low latency class.

Then, from T' ₁ May be at T ″ 'for an estimated scheduling delay of BSR resources 501' ₁ +2*RTT _REF Is finished and is from T' ₃ May be at T ″ 'and the estimated scheduling delay of the BSR resource 502 of' ₃ +RTT _REF And finishing the process. For example, if from T' ₁ Is from T ' "', as compared to the estimated scheduling delay of BSR resource 501 ' ₃ (T″′ ₁ +2*RTT _REF <＝T″′ ₃ +RTT _REF ) Earlier end of the estimated scheduling delay of the BSR resource 502, or T ″'. ₃ And T' ₁ Is greater than or equal to a reference RTT (T' ₃ -T″′ ₁ >＝RTT _REF ) Then in operation 105 may be selected to be in instance T ″' ₁ The high-latency BSR resource 501 is used for reporting BSR; otherwise, at timing T ″ 'may be selected in operation 105' ₃ The low-latency class of BSR resources 502 used for reportingAnd (5) reporting the BSR.

Several examples of the selection in operation 105 have been described above. In these examples, multiple BSR resources may be configured to the UE, and the UE may select at least one suitable BSR resource from the multiple BSR resources by considering, for example, BSR reporting occasions (which may be periodic), scheduling delays for support of the respective BSR resources, reference RTTs, QoS requirements of LCHs that trigger the BSRs, and so on. It is to be appreciated that the present application is not limited to the above examples, and any other suitable selection condition/rule/method may be used in operation 105.

Further, in one or more embodiments, where at least a RACH resource (e.g., a 2-step RACH resource with a CG resource, or a 4-step RACH resource with a CG resource) is selected from the plurality of BSR resources for reporting the BSR, possibly along with another BSR resource or dynamic grant selected from the plurality of BSR resources, the UE102 may cancel the BSR on the RACH resource based on receiving feedback from the BS101 after transmitting the BSR. It will be appreciated that the selection of RACH resources for reporting BSR is not limited to the examples described above with reference to fig. 1 to 5.

FIG. 6 shows an example of BSR cancellation in one embodiment, where T ₀ Corresponding to the arrival of new uplink data at the UE102 and the timing of BSR triggering and thus may correspond to the origin of time on the time axis.

In the example of fig. 6, a RACH resource 601 (e.g., 2-step RACH resource or 4-step RACH resource) is selected for reporting a BSR and at a timing T which is an initial available timing of the RACH resource 601 ₁ Here, UE102 transmits a BSR through an RA procedure via RACH resource 601. For example, at the timing T ₁ Here, the UE102 transmits the BSR through the 2-step RACH resource puncture by the uplink message MsgA of the 2-step RA procedure or through the 4-step RACH resource puncture by the uplink message Msg3 of the 4-step RA procedure.

For example, the final delay of BSR on RACH resources may be unpredictable due to possible preamble (preamble) collisions and/or power ramping (power ramping), which may be higher than the way CG resources or even SR/BSR procedures are based. Therefore, the BSR is not cancelled and is reserved after transmission of the BSR on the RACH resource.

Then, as shown in FIG. 6, if the UE102 is at T ₁ And available occasions T of another available BSR resource 602 ₂ Does not receive a downlink acknowledgement message (e.g., downlink message MsgB for a 2-step RA procedure, or downlink message Msg4 for a 4-step RA procedure) for the transmitted MsgA or Msg3 including the BSR, then the UE102 may transmit a message via the BSR resources 602 at T ₂ The BSR is sent again. For example, BSR resource 602 may be another BSR resource selected from a plurality of BSR resources along with RACH resource 601. For example, BSR resource 602 may have the same latency class as RACH resource 601. In another example, the BSR resource 602 may be a dynamic grant resource.

Further, UE102 may be in a BSR at T ₂ After retransmission, the BSR is cancelled, which may then be e.g. at T ₃ (ii) abort the RA procedure, T ₃ Is T ₁ Then the next available occasion for RACH resources 601.

For example, the BSR may include information related to the time at which the BSR is triggered or the time at which the BSR is multiplexed, so that the BS101 may determine whether BSRs received via more than one BSR resource correspond to the same BSR. If the BSRs received via more than one BSR resource correspond to the same BSR, then BS101 may terminate the RA procedure accordingly. For example, the information related to the time at which the BSR is triggered or the time at which the BSR is multiplexed may include a system frame number and a slot number of the BSR.

Thus, by taking into account RACH preamble collisions, power adjustments etc., BSR reporting on RACH resources can be optimized such that e.g. the achieved uplink scheduling delay can be predicted.

FIG. 7 shows another example of BSR cancellation in an embodiment, where T ₀ Corresponding to the arrival of new uplink data at the UE102 and the occasion of BSR triggering and thus may correspond to the origin of time on the time axis.

In the example of fig. 7, RACH resource 701 (e.g., 2-step RACH resource or 4-step RACH resource) is selected for reporting BSR and at an occasion T which is an initial available occasion of RACH resource 701 ₁ At, the UE102 transmits BSR through the RACH resource 701 through the RA procedure. For example, at the timing T ₁ Here, the UE102 transmits a BSR through the 2-step RACH resource through the uplink message MsgA of the 2-step RA procedure or transmits a BSR through the 4-step RACH resource through the uplink message Msg3 of the 4-step RA procedure.

As shown in FIG. 7, UE102 is at T ₁ And available occasions T of another available BSR resource 702 ₂ In the time period between, at t ₁ A downlink acknowledgement message (e.g., downlink message MsgB for a 2-step RA procedure, or downlink message Msg4 for a 4-step RA procedure) for the transmitted MsgA or Msg3 including the BSR is received, and the UE102 may cancel the BSR.

It is to be understood that the present disclosure is not limited to the above examples. Fig. 8 shows an example method 800 for BSR in one example embodiment, which may be performed in a UE, such as UE102 in the above-described embodiments.

As shown in fig. 8, example method 800 may include operation 801, operation 802, and operation 803. In operation 801, the UE may receive configuration information related to a plurality of resources of the BSR, such as information 103 in fig. 1. In operation 802, the UE may select a resource from a plurality of resources for a BSR triggered on the LCH, an example of which may include operation 105 in fig. 1. In operation 803, the UE may transmit a triggered BSR (e.g., triggered BSR 106 in fig. 1) via the selection resource.

In some example embodiments, the selecting in operation 802 may be based on at least one of a comparison between QoS requirements of the LCH and estimated scheduling delays of the plurality of resources.

In some example embodiments, the estimated scheduling delay of the selected resource from the initial available occasion of the selected resource after the trigger slot of the BSR ends earlier than the estimated scheduling delay of at least one resource between the plurality of resources from the respective initial available occasion of the at least one other resource after the trigger slot of the BSR.

In some example embodiments, the estimated scheduling delay of the resource for the comparison between the plurality of resources depends on at least one of the reference RTT, a latency class of the resource for the comparison, and an initial available occasion of the resource for the comparison after the trigger slot of the BSR.

In some example embodiments, the selecting the resource corresponds to an initially available resource with a high latency category after the trigger slot of the BSR, the at least another resource corresponds to an initially available resource with a low latency category after the trigger slot of the BSR, the initially available occasion of the selecting the resource is earlier than the initially available occasion of the at least another resource, and a time interval between the initially available occasion of the selecting the resource and the initially available occasion of the at least another resource is greater than or equal to the reference RTT.

In some example embodiments, the selecting the resource corresponds to an initially available resource with a low latency category after the trigger slot of the BSR, the at least another resource corresponds to an initially available resource with a high latency category after the trigger slot of the BSR, and the initial available occasion of the selecting the resource is earlier than an initial available occasion of the at least another resource, or a time interval between the initial available occasion of the selecting the resource and the initial available occasion of the at least another resource is less than or equal to the reference RTT.

In some example embodiments, the example method 800 may further include receiving information related to the reference RTT via a broadcast channel.

In some example embodiments, the example method 800 may further include: a reference RTT is determined based on at least one of the position information and the satellite ephemeris data.

In some example embodiments, the plurality of resources correspond to a single latency class, and the selected resource corresponds to an initially available resource among the plurality of resources after the trigger slot of the BSR.

In some example embodiments, the LCH is delay tolerant based on the QoS requirements of the LCH, and the resource utilization of the resource is selected to be higher than the resource utilization of at least another resource among the plurality of resources.

In some example embodiments, the plurality of resources includes at least one of RACH resources, CG resources, and PUCCH SR resources.

In some example embodiments, the selection resource corresponds to a RACH resource, and the BSR is reserved after the BSR is transmitted via the selection resource through an uplink message of the RA procedure.

In some example embodiments, the example method 800 may further include cancelling the BSR after receiving a downlink acknowledgement message for an uplink message of the RA procedure.

In some example embodiments, the example method 800 may further include: after transmitting the BSR via the selected resource and before receiving a downlink acknowledgement message for an uplink message of the RA procedure, retransmitting the BSR via another available resource or a dynamically granted resource of the plurality of resources; canceling the BSR after retransmission; and aborting the RA procedure.

In some example embodiments, the other available resource corresponds to a CG resource.

In some example embodiments, the BSR includes information related to a time at which the BSR is triggered or a time at which the BSR is multiplexed.

In some example embodiments, the information related to the time at which the BSR is triggered or the time at which the BSR is multiplexed includes a system frame number and a slot number of the BSR.

Fig. 9 illustrates an example apparatus 900 for BSR in an example embodiment, which may be at least a portion of a UE (such as UE102 in the above-described embodiments).

As shown in fig. 9, an example apparatus 900 may include at least one processor 901 and at least one memory 902 that may include computer program code 903. The at least one memory 902 and the computer program code 903 may be configured to, with the at least one processor 901, cause the apparatus 900 at least to perform the operations of the example method 800 described above.

In various example embodiments, the at least one processor 901 in example apparatus 900 may include, but is not limited to, at least one hardware processor including at least one microprocessor such as a Central Processing Unit (CPU), a portion of at least one hardware processor, and any other suitable special purpose processor such as those developed based on, for example, Field Programmable Gate Arrays (FPGAs) and Application Specific Integrated Circuits (ASICs). Furthermore, at least one processor 801 may also include at least one other circuit or element not shown in fig. 9.

In various example embodiments, the at least one memory 902 in the example apparatus 900 may include various forms of at least one storage medium, such as volatile memory and/or non-volatile memory. Volatile memory can include, but is not limited to, for example, Random Access Memory (RAM), cache memory, and the like. Non-volatile memory may include, but is not limited to, for example, Read Only Memory (ROM), hard disk, flash memory, and the like. Further, at least the memory 802 may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing.

Moreover, in various example embodiments, example apparatus 900 may also include at least one other circuit, element, and interface, such as at least one I/O interface, at least one antenna element, and so forth.

In various example embodiments, the circuits, components, elements, and interfaces in example apparatus 900, including at least one processor 901 and at least one memory 902, may be coupled together in any suitable manner (e.g., electrically, magnetically, optically, electromagnetically, etc.) via any suitable connection, including but not limited to a bus, switched fabric (cross bars), wiring, and/or wireless lines.

Fig. 10 shows another exemplary device 1000 for BSR in one exemplary embodiment, which may be implemented in a UE, such as UE102 in the embodiments described above.

As shown in fig. 10, example apparatus 1000 may include means 1001 for performing operation 801 of example method 800, means 1002 for performing operation 802 of example method 800, and means 1003 for performing operation 803 of example method 800. In one or more further example embodiments, at least one I/O interface, at least one antenna element, etc. may also be included in example device 1000. In some example embodiments, examples of the means in the apparatus 1000 may comprise circuitry. In some example embodiments, examples of the apparatus may also include software modules and any other suitable functional entities. In some example embodiments, one or more additional means for performing one or more additional operations of example method 800 may be included in apparatus 1000.

The term "circuitry" may refer to one or more or all of the following: (a) hardware-only circuit implementations (such as implementations in only analog and/or digital circuitry); (b) combinations of hardware circuitry and software, e.g., where applicable, (i) combinations of analog and/or digital hardware circuitry and software/firmware and (ii) any portion of a hardware processor and software (including a digital signal processor), software, and memory that operate together to cause a device, such as a mobile telephone or server, to perform various functions); (c) hardware circuitry and/or a processor, such as a microprocessor or a portion of a microprocessor, that requires software (e.g., firmware) for operation, but the software may not be present when operation is not required. This definition of circuitry applies to one or all uses of that term in this application, including in any claims. As a further example, as used in this application, the term "circuitry" also encompasses an implementation of merely a hardware circuit or processor (or multiple processors) or a hardware circuit or processor and a portion of its (or their) accompanying software and/or firmware. For example and where applicable to the claim elements, the term circuitry also encompasses baseband or processor integrated circuits for mobile devices, or similar integrated circuits in servers, cellular network devices, or other computing or network devices.

Fig. 11 shows an example method 1100 for BSR in one example embodiment, which may be performed in a BS, such as BS101 in the above-described embodiments.

As shown in fig. 11, example method 1100 may include operation 1101 and operation 1103, which may correspond to operation 801 and operation 803, respectively, of example method 800.

In operation 1101, the BS may transmit configuration information related to a plurality of resources of the BSR, for example, information 103 in fig. 1. In operation 1103, the BS may receive a BSR (e.g., the triggered BSR 106 in fig. 1) via one of a plurality of resources.

To facilitate operation 802 of example method 800, as shown in fig. 11, in some example embodiments, example method 1100 may further include an operation 1102 to broadcast information related to the reference RTT (e.g., information 104 in fig. 1).

In some example embodiments, the plurality of resources includes at least one of RACH resources, CG resources, and PUCCH SR resources.

To facilitate BSR cancellation, in some example embodiments, the BSR includes information related to the time at which the BSR is triggered or the time at which the BSR is multiplexed, e.g., where the resource corresponds to a RACH resource. For example, the information related to the time at which the BSR is triggered or the time at which the BSR is multiplexed includes the system frame number and slot number of the BSR.

In some example embodiments, the example method 1100 may further include: receiving another BSR via another resource or a dynamic grant resource among the plurality of resources between receiving the BSR via the resource through the uplink message of the RA procedure and transmitting a downlink acknowledgement message for the uplink message of the RA procedure; and terminating the RA procedure in case the BSR and the other BSR include the same information related to the time of triggering the BSR or the time of multiplexing the BSR.

Fig. 12 shows an exemplary method 1200 for BSR in an exemplary embodiment, which may be at least a portion of a BS, such as BS101 in the embodiments described above.

As shown in fig. 12, an example apparatus 1200 may include at least one processor 1201 and at least one memory 1202, the memory 1202 may include computer program code 1203. The at least one memory 1202 and the computer program code 1203 may be configured to, with the at least one processor 1201, cause the apparatus 1200 to perform at least the operations of the example method 1100 described above.

In various example embodiments, the at least one processor 1201 in the example apparatus 1200 may include, but is not limited to, at least one hardware processor including at least one microprocessor such as a CPU, a portion of at least one hardware processor, and any other suitable special purpose processor such as those developed based on, for example, FPGAs and ASICs. Furthermore, the at least one processor 1201 may also include at least one other circuit or element not shown in fig. 12.

In various example embodiments, the at least one memory 1202 in the example apparatus 1200 may include various forms of at least one storage medium, such as volatile memory and/or non-volatile memory. Volatile memory can include, but is not limited to, for example, RAM, cache memory, and the like. The non-volatile memory may include, but is not limited to, for example, ROM, hard disk, flash memory, and the like. In addition, the at least one memory 1202 may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing.

Moreover, in various example embodiments, the example apparatus 1200 may also include at least one other circuit, element, and interface, such as at least one I/O interface, at least one antenna element, and/or the like.

In various example embodiments, the circuits, components, elements, and interfaces in example apparatus 1200, including at least one processor 1201 and at least one memory 1202, may be coupled together in any suitable manner (e.g., electrically, magnetically, optically, electromagnetically, etc.) via any suitable connection (including, but not limited to, a bus, a switched fabric, wiring, and/or wireless lines).

Fig. 13 shows an example method 1300 for BSR in one example embodiment, which may be at least a portion of a BS, such as BS101 in the above-described embodiment.

As shown in fig. 13, example device 1300 may include means 1301 for performing operation 1101 of example method 1100, optional means 1302 for performing optional operation 1102 of example method 1100, and means 1303 for performing operation 1103 of example method 1100. In one or more further example embodiments, at least one I/O interface, at least one antenna element, etc., may also be included in example device 1300. In some example embodiments, an example of an apparatus in device 1300 may include circuitry. In some example embodiments, examples of the apparatus may also include software modules and any other suitable functional entities. In some example embodiments, one or more additional means for performing one or more additional operations of example method 1100 may be included in apparatus 1300.

Another example embodiment may relate to computer program code or instructions which may cause an apparatus to perform at least the respective methods described above. Another example embodiment may be associated with a computer-readable medium having such computer program code or instructions stored thereon. In some example embodiments, such computer-readable media may include at least one storage medium in various forms, such as volatile memory and/or non-volatile memory. Volatile memory can include, but is not limited to, for example, RAM, cache memory, and the like. The non-volatile memory may include, but is not limited to, ROM, hard disk, flash memory, etc. Non-volatile memory can also include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing.

Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, in the sense of "including, but not limited to". The term "coupled," as generally used herein, refers to two or more elements that may be connected directly or through one or more intermediate elements. Likewise, the term "connected," as generally used herein, refers to two or more elements that may be connected directly or through one or more intermediate elements. Additionally, the words "herein," "above," "below," and words of similar import, when used in this application, shall refer to this application as a whole and not to any particular portions of this application. Where the context permits, words in the description using the singular or plural number may also include the plural or singular number respectively. The word "or" refers to a list of two or more items, which encompasses all of the following interpretations of the word: all of the items in the list, any of the items in the list, and any combination of the items in the list.

Furthermore, conditional language such as "may," "can," "for example," "for instance," "such as," and the like, as used herein, are generally intended to convey that certain example embodiments include, but not certain features, elements, and/or states unless otherwise specifically indicated or otherwise understood in the context of use. Thus, such conditional language is not generally intended to imply that features, elements and/or states are in any way required for one or more example embodiments or that one or more example embodiments necessarily include logic for determining that such features, elements and/or states are included or are to be performed in any particular example embodiment, with or without author input or prompting.

While certain example embodiments have been described, these example embodiments have been presented by way of example, and are not intended to limit the scope of the present disclosure. Indeed, the apparatus, methods, and systems described herein may be embodied in a variety of other forms. Furthermore, various omissions, substitutions and changes in the form of the methods and systems described herein may be made without departing from the spirit of the disclosure. For example, while blocks are presented in a given arrangement, alternative example embodiments may perform similar functions with different components and/or circuit topologies, and some blocks may be deleted, moved, added, subdivided, combined, and/or modified. At least one of these blocks may be implemented in a variety of different ways. The order of these blocks may also be changed. Any suitable combination of the elements and acts of some of the example embodiments described above may be combined to provide further example embodiments. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the application.

Claims (25)

1. A method, comprising:

receiving configuration information related to a plurality of resources for buffering status reports;

selecting one resource from a plurality of resources for the buffer status report triggered on the logical channel based on at least one of a comparison between a quality of service requirement of the logical channel and an estimated scheduling delay of the plurality of resources; and

sending the triggered buffer status report via the selected resource.

2. The method of claim 1, wherein the estimated scheduling delay of the selected resource from the initial available opportunity of the selected resource ends earlier than the estimated scheduling delay of at least another resource among the plurality of resources from a corresponding initial available opportunity of the at least another resource after the triggering time slot of the buffer status report.

3. The method of claim 2, wherein an estimated scheduling delay of a resource for comparison between the plurality of resources depends on at least one of a reference round trip time, a latency class of the resource for the comparison, and an initial available opportunity of the resource for the comparison after a trigger slot of the buffer status report.

4. The method of claim 2, wherein the selected resource corresponds to an initial available resource with a high latency category after a trigger slot of the buffer status report, the at least another resource corresponds to an initial available resource with a low latency category after a trigger slot of the buffer status report, the initial available occasion of the selected resource is earlier than the initial available occasion of the at least another resource, and a time interval between the initial available occasion of the selected resource and the initial available occasion of the at least another resource is greater than or equal to a reference round trip time.

5. The method of claim 2, wherein the selected resource corresponds to an initial available resource with a low latency category after a trigger slot of the buffer status report, the at least another resource corresponds to an initial available resource with a high latency category after a trigger slot of the buffer status report, and the initial available occasion of the selected resource is earlier than an initial available occasion of the at least another resource, or a time interval between the initial available occasion of the selected resource and the initial available occasion of the at least another resource is less than or equal to a reference round trip time.

6. The method of any of claims 3 to 5 further comprising:

receiving information related to the reference round trip time via a broadcast channel.

7. The method of any of claims 3 to 5 further comprising:

the reference round trip time is determined based on at least one of position information and satellite ephemeris data.

8. The method of claim 2, wherein the plurality of resources correspond to a single latency category and the selected resource corresponds to an initially available resource among the plurality of resources after a trigger slot of the buffer status report.

9. The method of claim 1, wherein the logical channel is delay tolerant based on quality of service requirements of the logical channel, and a resource utilization of the selected resource is higher than a resource utilization of at least another resource among the plurality of resources.

10. The method of any of claims 1-9, wherein the plurality of resources comprises at least one of random access channel resources, configured grant resources, and physical uplink control channel scheduling request resources.

11. The method of claim 10, wherein the selection resource corresponds to the random access channel resource, and a buffer status report is maintained after the buffer status report is transmitted via the selection resource through an uplink message of a random access procedure.

12. The method of claim 11 further comprising:

canceling the buffer status report after receiving a downlink acknowledgement message for an uplink message of the random access procedure.

13. The method of claim 11 further comprising:

retransmitting the buffer status report via another available resource or a dynamically granted resource among the plurality of resources after transmitting the buffer status report via the selected resource and before receiving a downlink acknowledgement message for an uplink message of the random access procedure;

canceling the buffer status report after the retransmission; and

the random access procedure is aborted.

14. The method of claim 13, wherein the another available resource corresponds to the configured authorized resource.

15. The method according to any of claims 11 to 14, wherein the buffer status report comprises information related to the time of triggering a buffer status report or the time of multiplexing a buffer status report.

16. The method of claim 15, wherein the information related to a time at which the buffer status report is triggered or a time at which the buffer status report is multiplexed comprises a system frame number and a slot number of the buffer status report.

17. A method, comprising:

transmitting configuration information related to a plurality of resources for buffering status reports;

broadcasting information related to a reference round trip time; and

receiving a buffer status report triggered on a logical channel via one of the plurality of resources.

18. The method of claim 17, wherein the plurality of resources comprises at least one of random access channel resources, configured grant resources, and physical uplink control channel scheduling request resources.

19. The method of claim 17 or 18, wherein the resource corresponds to a random access channel resource and the buffer status report comprises information related to the time at which the buffer status report is triggered or multiplexed.

20. The method of claim 19, wherein the information related to the time at which the buffer status report is triggered or the time at which the buffer status report is multiplexed comprises a system frame number and a slot number of the buffer status report.

21. The method of claim 19 or 20, further comprising:

receiving another buffer status report via another resource or a dynamic grant resource of the plurality of resources between receiving the buffer status report via the resource through an uplink message of a random access procedure and transmitting a downlink acknowledgement message for the uplink message of the random access procedure; and

aborting the random access procedure in case the buffer status report and the further buffer status report comprise the same information related to the time the buffer status report is triggered or the time the buffer status report is multiplexed.

22. An apparatus, comprising:

at least one processor; and

at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform the method of any of claims 1 to 21.

23. An apparatus, comprising:

means for receiving configuration information related to a plurality of resources for buffering status reports;

means for selecting one resource from the plurality of resources for the buffer status report triggered on the logical channel based on at least one of a comparison between a quality of service requirement of the logical channel and an estimated scheduling delay of the plurality of resources; and

means for sending a triggered buffer status report via the selected resource.

24. An apparatus, comprising:

means for transmitting configuration information related to a plurality of resources for buffering status reports;

means for broadcasting information related to a reference round trip time; and

means for receiving a buffer status report triggered on a logical channel via one of the plurality of resources.

25. A computer readable medium comprising instructions stored thereon for causing an apparatus to perform the method of any of claims 1 to 21.

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