CN117354942A - Methods, systems and user equipment for scheduling request transmissions - Google Patents

Abstract

Methods, systems and user equipment for scheduling request transmissions. The present invention provides a method, system and user equipment for scheduling request transmission. One of the methods may include the following steps: the first UE may send an instruction for data transmission to the second UE. Before receiving data from the first UE, the second UE may send an SR to the network node based on the indication. By utilizing the present invention, the delay between SR and UL authorization can be reduced.

Description

Methods, systems and user equipment for scheduling request transmissions

Cross-references to related applications

This application claims the benefit of priority to U.S. Provisional Patent Application No. 63/367,627, filed on July 4, 2022, and U.S. Patent Application No. 18/325,222, filed on May 30, 2023, the entire contents of which are incorporated by reference. Enter this article.

Technical field

The present invention generally relates to scheduling request (scheduling request, SR) transmission technology, and more specifically to SR transmission that sends SR to a network node before user equipment (UE) obtains uplink (UL) data. technology.

Background technique

GSM/GPRS/EDGE technology is also called 2G cellular technology, WCDMA/CDMA-2000/TD-SCDMA technology is also called 3G cellular technology, and LTE/LTE-A/TD-LTE technology is also called 4G cellular technology. These cellular technologies have been used in various telecommunications standards to provide common protocols that enable different wireless devices to communicate at the municipal, national, regional and even global levels. An example of an emerging telecommunications standard is 5G new radio (NR), which is a set of enhancements to the LTE mobile standard released by the Third Generation Partnership Project (3GPP). It is designed to better support mobile broadband internet access by increasing spectrum efficiency, reducing costs and improving services.

In conventional technology, when the UE needs to send UL data to the network, the UE may need to wait until the data is first generated and stored in the data buffer. That is to say, only after the UE obtains the UL data, the UE can send the SR to the network node. The UE must then wait for the UL grant for the SR from the network node. The delay between SR and UL authorization needs to be reduced.

Therefore, how to reduce the delay between SR and UL authorization is a topic worthy of discussion.

Contents of the invention

This application provides a method, system and user equipment for scheduling request transmission to overcome the above problems.

Embodiments of the present invention provide a method for scheduling request transmission. The method may include the following steps. The first UE may send an indication for data transmission to the second UE. Before receiving data from the first UE, the second UE may send an SR to the network node based on the indication.

Embodiments of the present invention provide a system for scheduling request transmission. The system may include a first UE, a second UE and a network node. The first UE may send an indication for data transmission to the second UE. Before receiving data from the first UE, the second UE may send an SR to the network node based on the indication.

Embodiments of the present invention provide a method for scheduling request transmission. The method includes the following steps. The UE's transceiver may receive an indication for data transmission from another UE. Before receiving data from the UE sending the indication, the transceiver may send an SR to the network node based on the indication.

An embodiment of the present invention provides a user equipment for scheduling request transmission. A UE may include a transceiver and a processor. The transceiver may receive an indication for data transmission from another UE. The processor can be coupled to the transceiver. The processor may determine to send the SR to the network node via the transceiver based on the indication before receiving data from the UE sending the indication.

By utilizing the present invention, the delay between SR and UL authorization can be reduced.

Description of drawings

The present invention will be more fully understood by referring to the following detailed description with reference to the accompanying drawings, in which:

Figure 1 is a block diagram of a wireless communication system 100 according to an embodiment of the present invention.

Figure 2 is a block diagram of a UE 200 according to an embodiment of the invention.

Figure 3 is a schematic diagram illustrating SR transmission during a modification period according to an embodiment of the present invention.

Figure 4 is a schematic diagram illustrating SR transmission during a modification period according to another embodiment of the present invention.

FIG. 5 is a flowchart illustrating a method for SR transmission according to an embodiment of the present invention.

FIG. 6 is a flowchart illustrating a method for SR transmission according to another embodiment of the present invention.

Detailed ways

The following description is of the best contemplated mode of carrying out the invention. This description is presented for the purpose of illustrating the general principles of the invention and should not be regarded as limiting. The scope of the invention is best determined by reference to the appended claims.

Figure 1 is a block diagram of a wireless communication system 100 according to an embodiment of the present invention. As shown in FIG. 1 , the wireless communication system 100 may include a first user equipment (UE) 110 , a second UE 120 and a network node 130 . It should be noted that, in order to illustrate the concept of the present invention, Figure 1 presents a simplified block diagram in which only elements relevant to the present invention are shown. However, the present invention should not be limited to what is shown in FIG. 1 .

In an embodiment of the present invention, the first UE 110 may be augmented reality (AR) glasses or other devices with lower capabilities, that is, these devices cannot directly send data to the network node 130.

In an embodiment of the present invention, the second UE 120 may be a head-mounted display (HMD), a smartphone, a Personal Data Assistant (PDA), a pager, a laptop computer, a desktop computer, A wireless handset or any computing device that includes a wireless communication interface that communicates with network node 130 . The second UE 120 may communicate with the first UE 110 through a communication link such as Wi-Fi, Bluetooth (BT), side link, and cable, but the invention should not be limited thereto.

In an embodiment, the network node 130 may be a base station, gNB, NB, eNB, access point, or access terminal, but the invention should not be limited thereto. In an embodiment, the second UE 120 may communicate with the network node 130 through 4G communication technology, 5G communication technology or 5G NR communication technology, but the present invention should not be limited thereto.

Figure 2 is a block diagram of a UE 200 according to an embodiment of the invention. The UE 200 may be applied to the second UE 120 of FIG. 1 . As shown in Figure 2, the UE 200 may include at least a baseband signal processing device 210, a radio frequency (radio frequency, RF) signal processing device 220, a processor 230, a memory device 240, and functional modules and circuits 250. It should be noted that, in order to illustrate the concept of the present invention, Figure 2 presents a simplified block diagram in which only elements relevant to the present invention are shown. However, the present invention should not be limited to what is shown in Figure 2.

RF signal processing device 220 may be a transceiver. RF signal processing device 220 may include multiple antennas for receiving or transmitting RF signals. The RF signal processing device 220 may receive an RF signal via an antenna and process the received RF signal to convert the received RF signal into a baseband signal to be processed by the baseband signal processing device 210; or receive baseband from the baseband signal processing device 210 signal and converts the received baseband signal into an RF signal to be sent to a peer communication device. RF signal processing device 220 may include a plurality of hardware elements for performing radio frequency conversion. For example, the RF signal processing device 220 may include a power amplifier, a mixer, an analog-to-digital converter (ADC)/digital-to-analog converter (DAC), etc.

The baseband signal processing device 210 may also process the baseband signal to obtain information or data sent by the peer-to-peer communication device. The baseband signal processing device 210 may also include a plurality of hardware elements for performing baseband signal processing.

The processor 230 may control the operation of the baseband signal processing device 210, the RF signal processing device 220, the memory device 240, and the functional modules and circuits 250. According to an embodiment of the present invention, the processor 230 may also execute program codes of corresponding software modules of the baseband signal processing device 210 and/or the RF signal processing device 220 . Program code that accompanies specific data in a data structure may also be referred to as a processor logical unit or stack instance when executed. Thus, processor 230 may be considered to include a plurality of processor logic units, each processor logic unit configured to perform one or more specific functions or tasks of a corresponding software module.

According to an embodiment of the present invention, the RF signal processing device 220 and the baseband signal processing device 210 may be jointly regarded as a radio module capable of communicating with a wireless network to provide wireless communication services compliant with a predetermined radio access technology (RAT). . Please note that in some embodiments of the present invention, the UE 200 may be further expanded to include multiple antennas and/or multiple radio modules, and the present invention should not be limited to what is shown in FIG. 2 .

Memory device 240 may store UE 200 software and firmware program code, system data, user data, and the like. Memory device 240 may be volatile memory such as random access memory (RAM), non-volatile memory such as flash memory or read-only memory (ROM), a hard disk, or any combination thereof.

Functional modules and circuits 250 may include a determination module 251 and a reporting module 252 . Processor 230 may execute various of the functional modules and circuits 250 to perform embodiments of the invention. In an embodiment of the present invention, the determining module 251 may determine to send the SR to the network node based on an indication from another UE. Reporting module 252 may send the SR and data to the network node.

According to the embodiment of the present invention, the baseband signal processing device 210 and the RF signal processing device 220 may be configured in the modem (MD) of the UE 200, and the processor 230 may be configured in the application processor (application processor, AP) of the UE 200. middle. According to embodiments of the present invention, the functional modules and circuits 250 may be configured in the modem or AP of the UE 200.

Figure 3 is a schematic diagram illustrating SR transmission during a modification period according to an embodiment of the present invention. In this embodiment, the UE 310 may be applied to the second UE 120 of FIG. 1 , and the network node 320 may be applied to the network node 130 of FIG. 1 . As shown in Figure 3, in step S310, when the AP of the UE learns that UL data will be generated but there are no UL resources for sending the UL data, the AP of the UE 310 may send an indication to the MD of the UE 310 to request that the UE The MD of 310 sends an SR to the network node 320 in advance. Specifically, in some applications, UL packets for these applications may be generated periodically. Therefore, the AP of UE 310 can learn that UL data will be generated within a period of time. Therefore, before UL data has been generated and stored in the data buffer of UE 310 (eg, layer 2 buffer (L2 buffer)), the AP of UE 310 may send an indication to the MD of UE 310 to request the The MD sends an SR for UL data transmission to the network node 320 in advance. The SR request can be used to request UL resources used to send UL data.

In step S320, UL data has been generated and stored in the data buffer of the UE 310.

In step S330, the UE 310 may receive the UL grant for the SR from the network node 320.

In step S340, the UE 310 may send the generated UL data to the network node 320.

In another example of an embodiment, when the UE 310 has received the UL grant for the SR from the network node 320, but the UE 310 has not generated UL data (ie, step S330 has occurred, but S320 has not occurred), in step In S340, the UE 310 may send a buffer status report (BSR) to the network node 320 to retain the UL authorization. Subsequently, when the second UE 310 has generated UL data, the UE 310 may send the UL data to the network node 320.

Figure 4 is a schematic diagram illustrating SR transmission during a modification period according to another embodiment of the present invention. In this embodiment, the first UE 410 may be applied to the first UE 110 of FIG. 1 , the second UE 420 may be applied to the second UE 120 of FIG. 1 , and the network node 430 may be applied to the network node 130 of FIG. 1 . The transmission in Figure 4 can be viewed as a tethering transmission mechanism. As shown in FIG. 4, in step S410, when the first UE 410 learns that UL data will be generated, the first UE 410 may send an indication to the second UE 420. Specifically, in some applications, UL packets for these applications may be generated periodically. Therefore, the first UE 410 can learn that UL data will be generated within a period of time.

In embodiments of the present invention, the indication from the first UE 410 may include a traffic profile of the UL data to be generated, quality of service (QoS) information, and/or other related information. The service profile can include: data rate, packet size, packet format, packet arrival rate, jitter value (jitter value), packet delay budget (PDB), reliability requirements, etc. QoS information can include service category, network control, internetwork control telephony, voice admission, signaling, real-time interaction, broadcast video, multimedia conferencing, multimedia streaming, low priority, low latency data , operations, administration, and management (OAM), standards, high-throughput data, etc.

In step S420, when there is no UL resource for transmitting UL data, the UL data has been received at the second UE 420 and the UL data is stored in a data buffer (eg, a second layer buffer) of the second UE 420. (L2 buffer)), the second UE 410 may send the SR for UL data transmission to the network node 430 in advance based on the instruction from the first UE 410.

In step S430, when the first UE 410 has generated UL data, the second UE 420 may receive the UL data from the first UE 410.

In step S440, the second UE 420 may receive the UL grant for the SR from the network node 430.

In step S450, the second UE 420 may send the UL data generated by the first UE 440 to the network node 430.

In another example of this embodiment, when the second UE 420 has received the UL grant for the SR from the network node 430, but still has not received the UL data from the first UE 410 (ie, step S440 has occurred, but S430 has not yet been received). ) does not occur, in step S450, the second UE 420 may send a BSR to the network node 430 to reserve the UL grant. Subsequently, when the second UE 420 has received the UL data from the first UE 410, the second UE 420 may send the UL data generated by the first UE 440 to the network node 430.

FIG. 5 is a flowchart illustrating a method for SR transmission according to an embodiment of the present invention. This method can be applied to the wireless communication system 100. As shown in FIG. 5 , in step S510 , the first UE 110 may send an instruction for data transmission to the second UE 120 .

In step S520, the second UE 120 may send the SR to the network node 130 based on the indication before receiving data from the first UE 110.

In some embodiments, in this method, after the second UE 120 sends the SR to the network node 130, the second UE may also receive data from the first UE 110. The network node 130 may also send the UL grant for the SR to the second UE 120. Subsequently, the second UE 120 may also send data to the network node 130.

In some embodiments, in this method, the network node 130 may also send the UL grant of the SR to the second UE. Furthermore, in response to the second UE 120 not receiving data from the first UE 110, the second UE 120 may also send a BSR to the network node 130.

In some embodiments, in this method, the first UE 110 may send the indication to the second UE via Wi-Fi, Bluetooth, sidelink, or cable.

FIG. 6 is a flowchart illustrating a method for SR transmission according to another embodiment of the present invention. This method may be applied to the second UE 120 of the wireless communication system 100. As shown in FIG. 6, in step S610, the second UE 120 may receive an indication for data transmission from another UE (eg, the first UE 110).

In step S620, the second UE 120 may send the SR to the network node 130 based on the indication before receiving data from the UE that sent the indication to the UE 120 (eg, the first UE 110).

In some embodiments, in this method, after sending the SR to the network node 130, the second UE 120 may also receive data from the UE that sent the indication to the UE 120 (eg, the first UE 110). The second UE 120 may also receive a UL grant for the SR from the network node 130. In addition, the second UE 120 may also send data to the network node 130.

In some embodiments, in this method, the second UE 120 may also receive a UL grant for the SR from the network node 130. Additionally, in response to the second UE 120 not receiving data from the UE that sent the indication to the UE 120 (eg, the first UE 110), the UE 120 may also send a BSR to the network node.

In the SR transmission method provided by the present invention, the UE can send SR to the network node before obtaining UL data. Subsequently, when the UE receives the UL grant for the SR, the UE may send the obtained data to the network node. Therefore, the delay between SR and UL authorization will be reduced.

Ordinal words such as "first," "second," and "third" are used in this application and in the claims for purposes of description. By itself it does not imply any order or relationship.

The steps of the methods described in connection with aspects disclosed herein may be implemented in hardware, software modules executed by a processor, or a combination of both. Software modules (e.g., including executable instructions and associated data) and other data may be located in data storage, e.g., in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of computer-readable storage medium known in the art. The sample storage medium can be coupled to a machine, such as a computer/processor (which, for convenience, may be referred to herein as a "processor") such that the processor can read information (e.g., code) from the storage medium and write to the storage medium. Enter information. The sample storage medium can be integrated into the processor. The processor and storage media may be located in an ASIC. The ASIC can be located in the UE. In the alternative, the processor and storage medium may reside as separate components in the UE. Furthermore, in some aspects, any suitable computer program product may include a computer-readable medium including code related to one or more aspects of the application. In some aspects, a computer software product may include packaging materials.

It should be noted that, although not explicitly stated, one or more steps of the methods described herein may include steps of storing, displaying and/or outputting as required by the particular application. In other words, any data, records, fields and/or intermediate results discussed in the methods may be stored, displayed and/or output to another device as required for the particular application. While the foregoing is directed to embodiments of the invention, other and further embodiments of the invention may be devised without departing from the essential scope of the invention. Various embodiments presented herein, or portions thereof, may be combined to create further embodiments. The above description is of the best contemplated modes of carrying out the invention. This description is presented for the purpose of illustrating the general principles of the invention and should not be regarded as limiting. The scope of the invention is best determined by reference to the appended claims.

The above paragraphs describe many aspects. Obviously, the teachings of the present invention may be implemented in many ways, and any specific configuration or functionality in the disclosed embodiments presents only representative conditions. Those skilled in the art will understand that all aspects disclosed in the present invention can be applied independently or combined.

Although the invention has been described by way of examples and preferred embodiments, it should be understood that the invention is not limited thereto. Various changes and modifications may still be made by those skilled in the art without departing from the scope and spirit of the invention. Accordingly, the scope of the invention will be defined and protected by the claims and their equivalents.

Claims (21)

1. A method for scheduling request transmissions, the method comprising:

transmitting, by a first user equipment UE, an indication for data transmission to a second UE; and

a scheduling request, SR, is sent by the second UE to a network node based on the indication before receiving data from the first UE.

2. The method for scheduling request transmission according to claim 1, further comprising:

receiving, by the second UE, the data from the first UE after the second UE transmits the SR to the network node;

transmitting, by the network node, an uplink, UL, grant for the SR to the second UE; and

and sending the data to the network node by the second UE.

3. The method for scheduling request transmission according to claim 1, further comprising:

transmitting, by the network node, a UL grant for the SR to the second UE; and

responsive to the second UE not receiving the data from the first UE, a buffer status report is sent by the second UE to the network node.

4. The method for scheduling request transmission of claim 1, wherein transmitting the indication further comprises:

the indication is sent by the first UE to the second UE over Wi-Fi, bluetooth, side link or cable.

5. The method for scheduling request transmission according to claim 1, wherein the indication comprises at least one of a service profile and quality of service information.

6. The method for scheduling request transmission of claim 1, wherein the first UE is augmented reality glasses.

7. A system for scheduling request transmissions, comprising:

a first user equipment UE;

a second UE in communication with the first UE via a communication link; and

a network node in wireless communication with the second UE,

wherein the first UE sends an indication for data transmission to the second UE, an

Wherein the second UE sends a scheduling request, SR, to a network node based on the indication before receiving data from the first UE.

8. The system for scheduling request transmission of claim 7, wherein after the second UE transmits the SR to the network node, the second UE receives the data from the first UE, the network node transmits an uplink UL grant for the SR to the second UE, and the second UE transmits data to the network node.

9. The system for scheduling request transmission of claim 7, wherein the network node sends an UL grant for the SR to the second UE, and wherein the second UE sends a buffer status report to the network node in response to the second UE not receiving the data from the first UE.

10. The system for scheduling request transmissions according to claim 7, wherein the communication link comprises Wi-Fi, bluetooth, side link, and cable.

11. The system for scheduling request transmission of claim 7, wherein the indication comprises at least one of a service profile and quality of service information.

12. The system for scheduling request transmission according to claim 7, wherein the first UE is augmented reality glasses.

13. A method for scheduling request transmissions, comprising:

receiving, by a transceiver of a user equipment, UE, an indication from another UE for data transmission; and

a scheduling request, SR, is sent by the transceiver to a network node based on the indication before receiving data from the other UE.

14. The method for scheduling request transmission according to claim 13, further comprising:

receiving, by the transceiver, the data from the other UE after transmitting the SR to the network node;

receiving, by the transceiver, an uplink, UL, grant for the SR from the network node; and

the data is transmitted by the transceiver to the network node.

15. The method for scheduling request transmission according to claim 13, further comprising:

receiving, by the transceiver, a UL grant for the SR from the network node; and

a buffer status report is sent by the transceiver to the network node in response to the second UE not receiving the data from the first UE.

16. The method for scheduling request transmission of claim 13, wherein the indication comprises at least one of a service profile and quality of service information.

17. A user equipment for scheduling request transmissions, the user equipment comprising:

a transceiver that receives an indication for data transmission from another user equipment, UE; and

a processor, coupled to the transceiver, determines to send a scheduling request, SR, to a network node via the transceiver based on the indication before receiving data from the other UE.

18. The user equipment of claim 17, wherein the transceiver receives the data from the other UE after transmitting the SR to the network node, wherein the transceiver receives an uplink UL grant for the SR from the network node, and wherein the transceiver transmits data to the network node.

19. The user equipment of claim 17, wherein the transceiver receives an UL grant for the SR from the network node, and wherein the transceiver sends a buffer status report to the network node in response to the UE not receiving the data from the other UE.

20. The user equipment of claim 17, wherein the indication comprises at least one of a service profile and quality of service information.

21. A storage medium storing a program which, when executed, causes an apparatus to perform the steps of the method for scheduling request transmission of any one of claims 13-16.