Augmented reality device, base station and discontinuous reception configuration method

Abstract

The invention discloses an augmented reality device, a base station and a discontinuous reception configuration method for the augmented reality device. An augmented reality device includes a transceiver and a processor. The transceiver is used for transmitting and receiving wireless signals. The processor is configured to receive, via the transceiver, a discontinuous reception configuration message in a connected mode from a base station, where the discontinuous reception configuration message in the connected mode corresponds to an augmented reality frame period mode and corresponds to a plurality of discontinuous reception configuration sequences in the connected mode, the augmented reality frame period mode having a unit of milliseconds, the augmented reality frame period mode is a non-integer period mode; and selecting one of the discontinuous reception configuration sequences in the connected mode as a selected discontinuous reception configuration sequence in the connected mode of the augmented reality device according to the performance information of the augmented reality device. The present disclosure can dynamically adjust the configuration of the augmented reality device to give consideration to both energy consumption and delay, thereby optimizing augmented reality packet reception.

Description

Technical Field

[0001] The present disclosure relates to a discontinuous reception configuration of an extended reality, and more particularly to an extended reality device, a base station, and a discontinuous reception configuration method for the extended reality device. Background Art

[0002] 5G New Radio (NR) is a recently developed wireless access technology that supports high throughput, low latency and high capacity communications. In addition, extended reality (XR) application services, such as virtual reality (VR), augmented reality (AR), mixed reality (MR) and / or the like, have been gradually developed in recent years and have been adopted in a variety of real-time applications, such as industrial applications, medical applications and educational applications. Summary of the invention

[0003] In view of the technical problems existing in the prior art, the present disclosure proposes a discontinuous reception configuration method, which can dynamically adjust the connected-mode discontinuous reception (C-DRX) configuration of the extended reality device according to the performance information of the extended reality device to balance energy consumption and delay, thereby optimizing the extended reality packet reception.

[0004] One aspect of the present disclosure is an extended reality device, comprising a transceiver and a processor. The transceiver is used to perform wireless signal transmission and reception. The processor is coupled to the transceiver and is used to perform the following operations: receiving a discontinuous reception configuration message under a first connection mode from a base station via the transceiver, wherein the discontinuous reception configuration message under the first connection mode corresponds to an extended reality frame cycle mode and corresponds to multiple discontinuous reception configuration sequences under the first connection mode, the unit of the extended reality frame cycle mode is milliseconds, and the extended reality frame cycle mode is a non-integer cycle mode; and selecting one of the multiple discontinuous reception configuration sequences under the first connection mode as the discontinuous reception configuration sequence under the selected connection mode of the extended reality device according to the performance information of the extended reality device.

[0005] According to an embodiment of the present disclosure, a frames per second (FPS) corresponding to the augmented reality frame cycle mode includes one of 15, 30, 45, 60, 72, 90 and 120.

[0006] According to another embodiment of the disclosure, each of the plurality of first connection mode DRX configuration sequences includes two different DRX configurations.

[0007] According to another embodiment of the present disclosure, a DRX configuration number of each of the plurality of DRX configuration sequences in the first connection mode is a minimum positive integer that is an integer after being multiplied by the augmented reality frame period pattern.

[0008] According to another embodiment of the present disclosure, the performance information includes at least one of a power consumption and a delay.

[0009] According to another embodiment of the present disclosure, the processor is further configured to perform the following operation: sending a response message to the base station via the transceiver, wherein the response message corresponds to the discontinuous reception configuration sequence in the selected connection mode.

[0010] According to another embodiment of the present disclosure, the processor is further used to perform the following operations: obtaining the multiple discontinuous reception configuration sequences under the first connection mode that do not satisfy the performance information; selecting multiple discontinuous reception configuration sequences under the second connection mode based on the performance information, wherein the multiple discontinuous reception configuration sequences under the second connection mode are not completely the same as the multiple discontinuous reception configuration sequences under the first connection mode; sending a discontinuous reception configuration sequence change request message under connection mode to the base station via the transceiver, and receiving a discontinuous reception configuration message under the second connection mode from the base station via the transceiver, wherein the discontinuous reception configuration message under the second connection mode corresponds to the extended reality frame period mode and corresponds to one of the multiple discontinuous reception configuration sequences under the second connection mode; and selecting the one of the multiple discontinuous reception configuration sequences under the second connection mode as the selected discontinuous reception configuration sequence under connection mode based on the performance information.

[0011] According to another embodiment of the present disclosure, the processor is further used to perform the following operations: obtaining that none of the multiple discontinuous reception configuration sequences under the first connection mode satisfy the performance information; and sending a discontinuous reception configuration sequence change request message under the connection mode to the base station via the transceiver, and receiving a discontinuous reception configuration message under the second connection mode from the base station via the transceiver, wherein the discontinuous reception configuration message under the second connection mode corresponds to the extended reality frame period mode and corresponds to the multiple discontinuous reception configuration sequences under the first connection mode.

[0012] Another aspect of the present disclosure is a base station, comprising a transceiver and a processor. The transceiver is used to perform wireless signal transmission and reception. The processor is coupled to the transceiver and is used to perform the following operations: configuring a plurality of discontinuous reception configuration sequences in connection mode for an extended reality device according to an extended reality frame cycle mode, wherein the unit of the extended reality frame cycle mode is milliseconds, and the extended reality frame cycle mode is a non-integer cycle mode; and sending a discontinuous reception configuration message in connection mode corresponding to the extended reality frame cycle mode and corresponding to the plurality of discontinuous reception configuration sequences in connection mode to the extended reality device via the transceiver.

[0013] Another aspect of the present disclosure is a method for configuring a discontinuous reception configuration for an extended reality device, comprising: receiving a discontinuous reception configuration message under connection mode from a base station, wherein the discontinuous reception configuration message under connection mode corresponds to an extended reality frame cycle mode and corresponds to multiple discontinuous reception configuration series under connection modes, and the unit of the extended reality frame cycle mode is milliseconds, and the extended reality frame cycle mode is a non-integer cycle mode; and selecting one of the multiple discontinuous reception configuration series under connection mode as the selected discontinuous reception configuration series under connection mode for the extended reality device based on the performance information of the extended reality device.

[0014] The beneficial effect of the present disclosure is at least that the adopted discontinuous reception configuration configuration method can dynamically adjust the C-DRX configuration of the extended reality device according to the performance information of the extended reality device to take into account energy consumption and delay, thereby optimizing the extended reality packet reception. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] For a more complete understanding of the embodiments and their advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 is a schematic diagram of a wireless communication system according to an embodiment of the present disclosure;

[0017] Figure 2 This is an example of receiving an extended reality packet when the extended reality frame rate is set to 60fps;

[0018] Figure 3A and Figure 3B Different examples of receiving an extended reality packet when the extended reality frame rate is set to 60fps and the base station sends an extended reality packet with a non-integer millisecond period;

[0019] Figure 4 is a block diagram of an extended reality device according to an embodiment of the present disclosure;

[0020] Figure 5is a flow chart of a discontinuous reception configuration method according to an embodiment of the present disclosure;

[0021] Figure 6 is a block diagram of a base station according to an embodiment of the present disclosure;

[0022] Figure 7 is a flow chart of a discontinuous reception configuration method according to an embodiment of the present disclosure;

[0023] Figure 8 is a flow chart of a discontinuous reception configuration method according to an embodiment of the present disclosure;

[0024] Fig. 9 FIG. 4 is a flow chart of a DRX configuration configuration method according to an embodiment of the present disclosure.

[0025]

Explanation of symbols

[0026] 50,70,80,90: Discontinuous reception configuration method

[0027] 100: Wireless communication system

[0028] 110: User equipment

[0029] 120: Network side

[0030] 122,600: Base stations

[0031] 124: Core Network

[0032] 400: Extended Reality Device

[0033] 410,610: Transceiver

[0034] 420,620: Processor

[0035] 430,630:Memory

[0036] 440: Display

[0037] S502-S504, S702-S704, S802-S822, S902-S906: Operation DETAILED DESCRIPTION

[0038] The following is a detailed discussion of the embodiments of the present disclosure. However, it is understood that the embodiments provide many applicable concepts that can be implemented in a variety of specific contexts. The embodiments discussed and disclosed are for illustration only and are not intended to limit the scope of the present disclosure.

[0039] The terms used in this article are only for describing specific embodiments and are not intended to limit the scope of the patent application. Unless otherwise limited, the singular forms of "a", "an" or "the" may also be used to represent plural forms.

[0040] It is to be understood that, although the terms "first" and "second" used in this article may be used to describe different elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from other elements. "Distinguishing" or "obtaining" used in this article can be replaced by "generating", "calculating" or "operating".

[0041] Figure 1 Schematic diagram of a wireless communication system 100 according to an embodiment of the present disclosure. The wireless communication system 100 may be, for example, a fifth generation (5G) new radio communication system, a beyond 5G communication system, a sixth generation (6G) and / or other similar wireless communication systems (e.g., an evolution of any of the above systems). In the wireless communication system 100, a user equipment (UE) 110 is connected to a network end 120 via a radio access network (RAN). The user equipment 110 may be a smartphone, a tablet computer, a virtual reality head mounted device, an augmented reality / mixed reality glasses, or other devices with an extended reality function and capable of communicating with the network end 120. In order to avoid unnecessary energy consumption, the radio resource control (RRC) mode of the user equipment 110 is divided into three modes: idle mode, inactive mode and connected mode, and a discontinuous reception (DRX) mechanism is used in the connected mode, which is defined in the packet reception period and the sleep period in the discontinuous reception configuration. In the application of augmented reality, the user equipment 110 adopts the connected mode discontinuous reception (C-DRX) (hereinafter referred to as C-DRX) mechanism to receive augmented reality packets in the connected mode.

[0042] The network end 120 includes a base station (BS) 122 and a core network 124, wherein the base station 122 is used to provide an interface for the user equipment 110 to access the wireless access network, and the core network 124 is used to provide network services to each user equipment 110, and has a variety of core network functions, including, for example, a user plane function (UPF), an access and mobility function (AMF), an authentication server function (AUSF), a session management function (SMF), a unified data management function (UDM), a policy and control function (PCF), a network repository function (NRF), a data network (DN) and / or other core network functions. Each user equipment 110 is connected to the base station 122 via a wireless interface. In the example of a 5G new wireless system, base station 122 is also referred to as a next generation NodeB (gNB), an evolved Universal Terrestrial Radio Access Network (E-UTRAN) evolved NodeB (eNB) or a next generation evolved base station (ng-eNB), core network 124 is also referred to as a 5G core (5G Core, 5GC) network or a 4G evolved packet core (Evolved Packet Core, EPC) network supporting 5G functions, and the wireless access network may be referred to as a next generation radio access network (NG-RAN) or an evolved universal terrestrial radio access network supporting 5G functions.

[0043] In current wireless communication system standards (e.g., 3GPP standards), the frames per second (FPS) of the XR frame rate used by XR traffic include 15, 30, 45, 60, 72, 90, 120, etc. The XR frame rate can be set by the base station 122 based on, for example, the maximum downlink rate of the user equipment 110, the image resolution, and / or other factors (e.g., channel and software / hardware conditions). However, the XR frame period modes (i.e., the reciprocal of the XR frame rate) corresponding to these XR frame rates are all non-integer period modes. For example, the XR frame period mode corresponding to 60 frames per second (i.e., 60fps) is 50 / 3 milliseconds, which makes it difficult to align with the wireless subframe in the downlink packet reception.

[0044] Figure 2 This is an example of receiving an extended reality packet when the extended reality frame rate is set to 60fps. Figure 2 As shown, according to the current wireless communication system standard, the base station 122 must send an XR packet at the 0th, 17th, and 34th milliseconds of each 50 millisecond time length, and the user device 110 must correspondingly enter the wake-up state within the wake-up time (onDuration) starting at the 0th, 17th, and 34th milliseconds to receive the XR packet. Since the rhythm of the user device 110 receiving the XR packet (receiving the XR packet every 17 milliseconds) does not match the screen update rate of the user device 110 (updating the screen every 50 / 3 milliseconds), additional processing (such as timing control) of the XR packet is required.

[0045] If the base station 122 can send the XR packets at a non-integer millisecond period (i.e., send the XR packets at a non-integer millisecond time point), the problem of mismatch between the frequency of receiving the XR packets and the screen update rate of the user equipment 110 can be solved. However, according to the current wireless communication system standard, the discontinuous reception configuration configured by the base station 122 for the user equipment 110 can only be an integer (in milliseconds), so two different discontinuous reception configurations must be configured, and the user equipment 110 can only receive the XR packets at an integer millisecond time point, which does not match the base station 122 sending the XR packets at a non-integer millisecond time point, resulting in different degrees of redundant delay and / or redundant energy consumption.

[0046] Figure 3A This is an example of receiving an XR packet when the XR frame rate is set to 60fps and the base station 122 sends an XR packet at a period of non-integer milliseconds. Figure 3AAs shown, the base station 122 sends the XR packets at the 0th, 50 / 3rd, and 100 / 3rd milliseconds in each 50 millisecond time length, and correspondingly, the user equipment 110 enters the wake-up state at the wake-up time starting at the 0th, 16th, and 33rd milliseconds respectively according to the C-DRX configuration sequence [16, 17, 17] (including discontinuous reception configurations 16 and 17, in milliseconds) configured by the base station 122 to receive the XR packets. Figure 3A In the figure, since the second and third times that the user equipment 110 enters the wake-up state to receive the extended reality packet are 16 milliseconds and 33 milliseconds respectively, which are earlier than the second and third times that the base station 122 sends and receives the extended reality packet (50 / 3 milliseconds and 100 / 3 milliseconds respectively), excess energy consumption is generated during the period from 16 milliseconds to 50 / 3 milliseconds and from 33 milliseconds to 100 / 3 milliseconds.

[0047] Figure 3B This is another example of receiving an augmented reality packet when the augmented reality frame rate is set to 60 fps and the base station 122 sends an augmented reality packet at a period of non-integer milliseconds. Figure 3B As shown, the base station 122 sends the XR packets at the 0th, 50 / 3rd, and 100 / 3rd milliseconds in each 50 millisecond time length, and correspondingly, the user equipment 110 enters the wake-up state at the wake-up time starting at the 0th, 17th, and 34th milliseconds respectively according to the C-DRX configuration sequence [17, 17, 16] configured by the base station 122 to receive the XR packets. Figure 3B In the figure, since the second and third times that the user equipment 110 enters the wake-up state to receive the extended reality packet are 17 milliseconds and 34 milliseconds respectively, which are later than the second and third times that the base station 122 sends the extended reality packet (50 / 3 milliseconds and 100 / 3 milliseconds respectively), unnecessary delays of 1 / 3 millisecond and 2 / 3 milliseconds are generated respectively.

[0048] Figure 4 FIG. 4 is a block diagram of an extended reality device 400 according to an embodiment of the present disclosure. The extended reality device 400 may be connected to a network end via a wireless access network. For example, the extended reality device 400 may be Figure 1 In addition, the extended reality device 400 can support various types of extended reality applications, including virtual reality, augmented reality, mixed reality and / or other technologies. The extended reality device 400 includes a transceiver 410, a processor 420, a memory 430 and a display 440.

[0049] The transceiver 410 may include an antenna, a radio frequency circuit, and a baseband circuit, and is used to wirelessly communicate with other entities (e.g., a base station at a network end) and perform wireless signal transmission and reception based on the operation results of the processor 420. For example, the transceiver 410 may be used to receive a radio frequency signal, demodulate the radio frequency signal into a baseband signal, decode the baseband signal into bit data, and send the bit data to the processor 420 for data processing, and / or to convert the bit data received from the processor 420 into a baseband signal, modulate the baseband signal into a radio frequency signal, and transmit the baseband signal.

[0050] The processor 420 is coupled to the transceiver 410, and is used to process the received bit data and thereby execute the functions in the extended reality device 400, and / or to generate bit data according to the functions in the extended reality device 400. The processor 420 can be, for example, a conventional processor, a central processor unit (CPU), a graphic processor unit (GPU), a digital signal processor (DSP), a microprocessor, an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a combination of the above elements, but is not limited thereto.

[0051] The memory 430 is coupled to the processor 420 and may be any data storage device that can be read and executed by the processor 420. The memory 430 may be, for example, a subscriber identity module (SIM), a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), a CD-ROM, a magnetic tape, a hard disk, a solid state drive, a flash memory, or other data storage devices suitable for storing program codes, but is not limited thereto.

[0052] The display 440 is coupled to the processor 420, and can display images according to the processing result of the processor 420. The display 440 can be, for example, a liquid crystal display (LCD), an organic light-emitting diode (OLED) display, a micro light-emitting diode (Micro LED) display, an electroluminescent (EL) display, an electronic paper display, or other suitable displays.

[0053] Figure 5 FIG. 5 is a flow chart of a discontinuous reception configuration configuration method 50 according to an embodiment of the present disclosure. The discontinuous reception configuration configuration method 50 is applicable to a terminal device with an augmented reality function in a wireless communication system, such as Figure 1 Any user equipment 110 in the wireless communication system 100, Figure 4 For example, if used in the extended reality device 400, the discontinuous reception configuration method 50 may be programmed as a computer program instruction, and may be stored in the memory 430 and executed by the processor 420, wherein the message sending and / or receiving may be achieved by the processor 420 controlling the transceiver 410 to send and / or receive wireless signals.

[0054] The discontinuous reception configuration method 50 is described as follows. First, operation S502 is performed to receive a C-DRX configuration message from a base station. The C-DRX configuration message may correspond to the same extended reality frame cycle mode and correspond to (for example, include) multiple C-DRX configuration sequences, wherein the unit of the extended reality frame cycle mode is milliseconds, and the extended reality frame cycle mode is a non-integer cycle mode.

[0055] In some embodiments, these C-DRX configuration sequences include at least one non-decreasing sequence and at least one non-increasing sequence, wherein the redundant delay corresponding to each non-decreasing sequence is 0, and the redundant energy consumption corresponding to each non-increasing sequence is 0. In some examples, the maximum discontinuous reception configuration and the minimum discontinuous reception configuration in the C-DRX configuration sequence differ by 1 millisecond. In addition, each C-DRX configuration sequence may include two different discontinuous reception configurations, and the number of discontinuous reception configurations in each C-DRX configuration sequence is the smallest positive integer that can be an integer after multiplication by the extended reality frame cycle mode. For example, if the frame rate per second is 60fps (the corresponding extended reality frame cycle mode is 50 / 3 milliseconds), the number of discontinuous reception configurations in each C-DRX configuration sequence is 3; if the frame rate per second is 90fps (the corresponding extended reality frame cycle mode is 100 / 9 milliseconds), the number of discontinuous reception configurations in each C-DRX configuration sequence is 9.

[0056] Next, operation S504 is performed to select one of these C-DRX configuration sequences as the selected C-DRX configuration sequence of the extended reality device according to the performance information of the extended reality device. The performance information includes information such as power consumption and / or delay, such as the remaining power of the extended reality device. For example, if the performance information of the extended reality device shows that the lowest delay is the priority, then a C-DRX configuration sequence with a lower redundant delay is selected from these C-DRX configuration sequences as the selected C-DRX configuration sequence of the extended reality device for receiving the extended reality grouping; if the performance information of the extended reality device shows that the lowest energy consumption is the priority, then a C-DRX configuration sequence with a lower redundant energy consumption is selected from these C-DRX configuration sequences as the selected C-DRX configuration sequence of the extended reality device for receiving the extended reality grouping.

[0057] In some embodiments, the DRX configuration configuration method 50 further includes sending a response message corresponding to the selected C-DRX configuration sequence to the base station to notify the base station that the XR device has selected the selected C-DRX configuration sequence for receiving XR packets.

[0058] Taking 60fps as an example, the C-DRX configuration message may correspond to three C-DRX configuration series, and the redundant energy consumption and redundant delay corresponding to these C-DRX configuration series are shown in Table 1.

[0059] Table 1

[0060] C-DRX configuration series Excess energy consumption Excessive delay [17,17,16] 0 2％ [17,16,17] 0.67％ 0.67％ [16,17,17] 2％ 0

[0061] As can be seen from Table 1, the C-DRX configuration sequence [17,17,16] is a non-increasing sequence, and its corresponding redundant energy consumption and redundant delay are the lowest and highest respectively; the C-DRX configuration sequence [16,17,17] is a non-decreasing sequence, and its corresponding redundant energy consumption and redundant delay are the highest and lowest respectively; the redundant energy consumption and redundant delay corresponding to the C-DRX configuration sequence [16,17,17] are between the C-DRX configuration sequences [17,17,16] and [16,17,17]. The later the position of the discontinuous reception configuration 16 in the C-DRX configuration sequence is, the lower the corresponding redundant energy consumption is, and the higher the corresponding redundant delay is.

[0062] Taking 90fps as another example, the C-DRX configuration message may correspond to nine C-DRX configuration series, and the redundant energy consumption and redundant delay corresponding to these C-DRX configuration series are shown in Table 2.

[0063] Table 2

[0064]

[0065]

[0066] It can be seen from Table 2 that the C-DRX configuration sequence [12,11,11,11,11,11,11,11,11] is a non-increasing sequence, and its corresponding excess energy consumption and excess delay are the lowest and the highest respectively; the C-DRX configuration sequence [11,11,11,11,11,11,11,11,12] is a non-decreasing sequence, and its corresponding excess energy consumption and excess delay are the lowest and the highest respectively; the excess energy consumption and excess delay corresponding to each other C-DRX configuration sequence are between the C-DRX configuration sequences [12,11,11,11,11,11,11,11,11] and [11,11,11,11,11,11,11,11,12]. The later the position of the DRX configuration 12 in the C-DRX configuration sequence is, the higher the corresponding redundant energy consumption is, and the lower the corresponding redundant delay is.

[0067] Figure 6 6 is a block diagram of a base station 600 according to an embodiment of the present disclosure. The base station 600 can be used to provide an interface for an extended reality device with wireless communication function to connect to a network end via a wireless access network. For example, the base station 600 can be Figure 1 The base station 122 in the base station 600 includes a transceiver 610, a processor 620 and a memory 630, and the functions of the transceiver 610, the processor 620 and the memory 630 are similar to those of Figure 4Therefore, please refer to the description of the transceiver 410, the processor 420 and the memory 430 in the previous paragraphs, which will not be repeated here.

[0068] Figure 7 FIG. 7 is a flow chart of a discontinuous reception configuration configuration method 70 according to an embodiment of the present disclosure. The discontinuous reception configuration configuration method 70 is applicable to a terminal device with an augmented reality function in a wireless communication system, such as Figure 1 The base station 122 in the wireless communication system 100, Figure 6 For example, if used in the base station 600, the discontinuous reception configuration method 70 may be programmed as a computer program instruction, and may be stored in the memory 630 and executed by the processor 620, wherein the message sending and / or receiving may be achieved by the processor 620 controlling the transceiver 610 to send and / or receive wireless signals.

[0069] The description of the discontinuous reception configuration configuration method 70 is as follows. First, perform operation S702 to configure multiple C-DRX configuration sequences according to the augmented reality frame cycle mode, wherein the unit of the augmented reality frame cycle mode is milliseconds, and the augmented reality frame cycle mode is a non-integer cycle mode. Then, perform operation S704 to send a C-DRX configuration message corresponding to the augmented reality frame cycle mode and corresponding to these C-DRX configuration sequences to the augmented reality device. Please refer to the description of the discontinuous reception configuration configuration method 50 for the C-DRX configuration message, the C-DRX configuration sequence and the augmented reality frame cycle mode, which will not be repeated here.

[0070] In some embodiments, the C-DRX configuration sequence can be converted into an adjustable discontinuous reception (drx-adjustable) configuration and an index value (index), and the C-DRX configuration sequence corresponding to the C-DRX configuration message can be represented by the index value to facilitate transmission between the base station and the extended reality device. The adjustable discontinuous reception configuration is greater than or equal to 0 and less than 1. If the number of frames per second is 15fps, 60fps or 72fps, the adjustable discontinuous reception configuration meets formula (1):

[0071] (drx-adjustable cycle) modulo [ceiling(drx-shortcycle) –drx-shortcycle] = 0, (1)

[0072] Wherein, drx-adjustable cycle is the adjustable discontinuous reception configuration, drx-shortcycle is the extended reality frame cycle mode, modulo(·) represents the modulus operation, and ceiling(·) represents the rounding operation, and the corresponding relationship between the adjustable discontinuous reception configuration and the index value is shown in formula (2):

[0073] drx-adjustable cycle(index)[celling(drx-shortcycle)–drx-shortcycle]

[0074] = drx-adjustable cycle, (2)

[0075] Where drx-adjustable cycle (index) is the index value. If the number of frames per second is 30fps, 45fps, 90fps or 120fps, the adjustable discontinuous reception configuration conforms to formula (3):

[0076] (drx-adjustable cycle) modulo [drx-shortcycle –floor(drx-shortcycle)]= 0, (3)

[0077] Wherein floor(·) represents a rounding operation, and the corresponding relationship between the discontinuous reception configuration and the index value can be adjusted as shown in formula (4):

[0078] drx-adjustable cycle(index)[drx-shortcycle–floor(drx-shortcycle)]

[0079] =drx-adjustable cycle. (4)

[0080] For example, when the frame rate per second is 60fps (the corresponding extended reality frame period mode is 50 / 3 milliseconds), the adjustable discontinuous reception configuration includes 0, 1 / 3, and 2 / 3. As shown in Table 3, the index values ​​corresponding to the adjustable discontinuous reception configurations of 0, 1 / 3, and 2 / 3 are 0, 1, and 2, respectively, and the corresponding C-DRX configuration sequence is [17, 17, 16], [17, 16, 17], and [16, 17, 17]; when the frame rate per second is 90fps (the corresponding extended reality frame period mode is 100 / 9 milliseconds), the adjustable discontinuous reception configuration includes 0, 1 / 9, 2 / 9, 3 / 9, 4 / 9, 5 / 9, and 6 / 9. / 9, 6 / 9, 7 / 9, 8 / 9, and as shown in Table 4, the index value and the C-DRX configuration number sequence corresponding to the discontinuous reception configuration of 0 can be adjusted to 0 and [12, 11, 11, 11, 11, 11, 11, 11] respectively, the index value and the C-DRX configuration number sequence corresponding to the discontinuous reception configuration of 1 / 9 can be adjusted to 1 and [11, 12, 11, 11, 11, 11, 11, 11] respectively, the index value and the C-DRX configuration number sequence corresponding to the discontinuous reception configuration of 2 / 9 can be adjusted to 2 and [11, 11, 12, 11, 11, 11, 11, 11] respectively, and so on.

[0081] Table 3

[0082] C-DRX configuration series Adjustable DRX configuration Index value [17,17,16] 0 0 [17,16,17] 1 / 3 1 [16,17,17] 2 / 3 2

[0083] Table 4

[0084] C-DRX configuration series Adjustable non-continuous reception sequence Index value [12,11,11,11,11,11,11,11,11] 0 0 [11,12,11,11,11,11,11,11,11] 1 / 9 1 [11,11,12,11,11,11,11,11,11] 2 / 9 2 [11,11,11,12,11,11,11,11,11] 3 / 9 3 [11,11,11,11,12,11,11,11,11] 4 / 9 4 [11,11,11,11,11,12,11,11,11] 5 / 9 5 [11,11,11,11,11,11,12,11,11] 6 / 9 6 [11,11,11,11,11,11,11,12,11] 7 / 9 7 [11,11,11,11,11,11,11,11,12] 8 / 9 8

[0085] After receiving the C-DRX configuration message, the extended reality device can select one of the adjustable discontinuous reception configurations for receiving the extended reality packet. The extended reality device can calculate the time point to start entering the wake-up state to receive the extended reality packet by formula (5):

[0086] floor{[(SFN×10)+subframe number+(drx-adjustable cycle)]

[0087] modulo(drx-ShortCycle)}

[0088] = floor{ (drx-StartOffset) modulo (drx-ShortCycle)}, (5)

[0089] SFN is the system frame number, which can be an integer from 0 to 1023, subframenumber is the subframe number, that is, the time point at which each discontinuous reception configuration starts, which can be an integer from 0 to 9, and drx-StartOffset is the discontinuous reception offset parameter.

[0090] Figure 8 FIG. 8 is a flow chart of a discontinuous reception configuration configuration method 80 according to an embodiment of the present disclosure. The discontinuous reception configuration configuration method 80 can be used to Figure 1 A wireless communication system 100 is provided, wherein a portion of the operations are performed in a base station 122, and another portion of the operations are performed in any user equipment 110 (ie, an extended reality device).

[0091] In operation S802, the base station configures a plurality of C-DRX configuration sequences for the augmented reality device according to the augmented reality frame cycle mode, and sends a C-DRX configuration message corresponding to the real world frame cycle mode and corresponding to these C-DRX configuration sequences to the augmented reality device.

[0092] In operation S804, the extended reality device determines whether an adjustable discontinuous reception configuration is required (e.g., by determining whether an adjustable discontinuous reception configuration is included in the C-DRX configuration message). If so, operation S806 is performed, and the extended reality device selects one of the adjustable discontinuous reception configurations based on its performance information. If not, operation S808 is performed, and the base station configures a fixed discontinuous reception configuration for the extended reality device.

[0093] The extended reality device can represent its power state with an initial state value. An initial state value of 0 can represent that the remaining power of the extended reality device is sufficient (for example, the remaining power is above 30%), while an initial state value of 1 can represent that the remaining power of the extended reality device is insufficient (for example, the remaining power is below 30%). In operation S806, if the initial state value changes from 1 to 0, it means that low latency is the main requirement, and then enters operation S810 to select an adjustable discontinuous reception configuration with lower excess delay and higher excess energy consumption (i.e., select a C-DRX configuration sequence with lower excess delay and higher excess energy consumption); if the initial state value changes from 0 to 1, it means that low energy consumption is the main requirement, and then enters operation S812 to select an adjustable discontinuous reception configuration with higher excess delay and lower excess energy consumption (i.e., select a C-DRX configuration sequence with higher excess delay and lower excess energy consumption).

[0094] For example, if the frame rate per second is 60fps, you can refer to Table 1 and Table 3 to select, the adjustable discontinuous reception configuration with lower redundant delay and higher redundant energy consumption is 2 / 3 (the corresponding index value is 2), and the adjustable discontinuous reception configuration with higher redundant delay and lower redundant energy consumption is 0 (the corresponding index value is 0); if the frame rate per second is 90fps, you can refer to Table 2 and Table 4 to select, the adjustable discontinuous reception configurations with lower redundant delay and higher redundant energy consumption include 8 / 9, 7 / 9, 6 / 9 (the corresponding index values ​​are 8, 7, 6), and the adjustable discontinuous reception configurations with higher redundant delay and lower redundant energy consumption include 0, 1 / 9, 2 / 9 (the corresponding index values ​​are 0, 1, 2).

[0095] After operation S810 / S812 is completed, operation S814 is then entered, and the extended reality device determines whether the C-DRX configuration sequence corresponding to the adjustable discontinuous reception configuration satisfies the performance information of the extended reality device. If the determination result is yes (i.e., the performance information of the extended reality device is satisfied, for example, the excess delay is lower than the delay amount and the excess energy consumption is lower than the power consumption), the extended reality device uses this C-DRX configuration sequence as the selected C-DRX configuration sequence for receiving the extended reality packet, and returns to operation S806. On the contrary, if the determination result is no (i.e., the performance information of the extended reality device is not satisfied, for example, the excess delay is higher than the delay amount and / or the excess energy consumption is higher than the power consumption), it means that all the adjustable discontinuous reception configurations in the obtained C-DRX configuration message do not satisfy the performance information of the extended reality device (i.e., all C-DRX configuration sequences do not satisfy the performance information of the extended reality device), and then operation S816 is entered, and the extended reality device sends a C-DRX configuration sequence change request message to the base station.

[0096] In operation S818, after receiving the C-DRX configuration sequence change request message sent by the extended reality device, the base station determines whether it agrees to change the C-DRX configuration sequence configured for the extended reality device. If so, operation S820 is performed, and the base station configures one of the multiple C-DRX configuration sequences selected by the extended reality device according to the C-DRX configuration sequence change request message, and sends a new C-DRX configuration message (corresponding to the selected C-DRX configuration sequence) to the extended reality device. In operation S820, the C-DRX configuration sequence selected by the extended reality device is not exactly the same as the C-DRX configuration sequence configured in operation S802. On the contrary, if the base station determines that it is not, operation S822 is performed, and the base station resends the same C-DRX configuration message to the extended reality device, instructing the extended reality device to select one of the C-DRX configuration sequences from the previously configured C-DRX configuration sequences for receiving the extended reality group. The C-DRX configuration sequence corresponding to the resent C-DRX configuration message is the C-DRX configuration sequence configured in operation S802.

[0097] Fig. 9 FIG. 9 is a flow chart of a discontinuous reception configuration configuration method 90 according to an embodiment of the present disclosure. The continuous reception configuration configuration method 90 can also be used for Figure 1 A wireless communication system 100 is provided, wherein a portion of the operations are performed in a base station 122, and another portion of the operations are performed in any user equipment 110 (ie, an extended reality device).

[0098] In operation S902, the base station configures multiple C-DRX configuration series for the extended reality device based on the status of the extended reality device (e.g., the remaining power of the extended reality device and / or the channel environment where the extended reality device is located, etc.) and the extended reality frame cycle mode, and sends a C-DRX configuration message corresponding to the extended reality frame cycle mode and corresponding to (e.g., including) these C-DRX configuration series to the extended reality device.

[0099] Taking 90fps as an example, if the remaining power of the extended reality device is sufficient (for example, the remaining power is above 30%), the base station configures a C-DRX configuration series with lower redundant delay and higher redundant energy consumption for the extended reality device (the corresponding adjustable discontinuous reception configurations include 8 / 9, 7 / 9, and 6 / 9); if the remaining power of the extended reality device is insufficient (for example, the remaining power is below 30%), the base station configures a C-DRX configuration series with higher redundant delay and lower redundant energy consumption for the extended reality device (the corresponding adjustable discontinuous reception configurations include 0, 1 / 9, and 2 / 9).

[0100] In operation S904, the extended reality device selects (eg, randomly selects) one of the C-DRX configuration number series as a selected C-DRX configuration number series according to the C-DRX configuration message for receiving the extended reality packet.

[0101] In operation S906 , the XR device sends a response message corresponding to (eg, including) the selected C-DRX configuration sequence to the base station to notify the base station that it has selected the selected C-DRX configuration sequence for receiving XR packets.

[0102] The main difference between the non-continuous reception configuration configuration methods 80 and 90 is that the non-continuous reception configuration configuration method 80 is for the extended reality device to actively select a C-DRX configuration sequence for the reception of extended reality packets based on the performance information, while the non-continuous reception configuration configuration method 90 is for the base station to actively configure multiple C-DRX configuration sequences based on the state of the extended reality device, and the extended reality device randomly selects one of the C-DRX configuration sequences for the reception of the extended reality packets.

[0103] In summary, the DRX configuration method disclosed herein can dynamically adjust the C-DRX configuration of the extended reality device according to the performance information of the extended reality device to balance energy consumption and delay, thereby optimizing the extended reality packet reception.

[0104] Although the present disclosure has been disclosed as above by way of embodiments, it is not intended to limit the present disclosure. Any person having ordinary knowledge in the technical field may make slight changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be determined by the definition of the attached claims.

Claims

1. An extended reality device, characterized in that: Include: A transceiver for performing wireless signal transmission and reception; A processor is coupled to the transceiver and is configured to perform the following operations: A discontinuous reception configuration message under a first connection mode is received from a base station via the transceiver, wherein the discontinuous reception configuration message under the first connection mode corresponds to an augmented reality frame period mode and corresponds to a plurality of discontinuous reception configuration sequences under the first connection mode, and a unit of the augmented reality frame period mode is milliseconds, and the augmented reality frame period mode is a non-integer period mode; and One of the plurality of discontinuous receiving configuration sequences in the first connection mode is selected as a discontinuous receiving configuration sequence in the selected connection mode of the extended reality device according to performance information of the extended reality device.

2. The extended reality device according to claim 1, wherein: A number of frames per second corresponding to the augmented reality frame period mode includes one of 15, 30, 45, 60, 72, 90 and 120.

3. The extended reality device according to claim 1, wherein: Each of the plurality of first connection mode DRX configuration sequences includes two different DRX configurations.

4. The extended reality device according to claim 1, wherein: A DRX configuration number of each of the plurality of DRX configuration sequences under the first connection mode is a minimum positive integer that is an integer after being multiplied by the augmented reality frame period mode.

5. The extended reality device according to claim 1, wherein: The performance information includes at least one of a power consumption and a delay.

6. The extended reality device according to claim 1, wherein: The processor is further configured to perform the following operations: A response message is sent to the base station via the transceiver, wherein the response message corresponds to the discontinuous reception configuration sequence in the selected connection mode.

7. The extended reality device according to claim 1, wherein: The processor is further configured to perform the following operations: It is obtained that none of the plurality of discontinuous receiving configuration sequences in the first connection mode satisfies the performance information; Selecting a plurality of discontinuous reception configuration sequences under the second connection mode according to the performance information, wherein the plurality of discontinuous reception configuration sequences under the second connection mode are not completely the same as the plurality of discontinuous reception configuration sequences under the first connection mode; Sending a connection mode discontinuous reception configuration sequence change request message to the base station via the transceiver, and receiving a second connection mode discontinuous reception configuration message from the base station via the transceiver, wherein the second connection mode discontinuous reception configuration message corresponds to the extended reality frame period mode and corresponds to one of the plurality of second connection mode discontinuous reception configuration sequences; as well as One of the plurality of DRX configuration sequences under the second connection mode is selected as the DRX configuration sequence under the selected connection mode according to the performance information.

8. The extended reality device according to claim 1, wherein: The processor is further configured to perform the following operations: It is obtained that none of the plurality of discontinuous reception configuration sequences in the first connection mode satisfies the performance information; and A discontinuous reception configuration sequence change request message under connection mode is sent to the base station via the transceiver, and a discontinuous reception configuration message under second connection mode is received from the base station via the transceiver, wherein the discontinuous reception configuration message under the second connection mode corresponds to the extended reality frame period mode and corresponds to multiple discontinuous reception configuration sequences under the first connection mode.

9. A base station, characterized in that: Include: A transceiver for performing wireless signal transmission and reception; A processor is coupled to the transceiver and is configured to perform the following operations: According to an augmented reality frame cycle mode, a plurality of non-continuous receiving configuration sequences in a connection mode are configured for an augmented reality device, wherein a unit of the augmented reality frame cycle mode is milliseconds, and the augmented reality frame cycle mode is a non-integer cycle mode; and A DRX configuration message in connection mode corresponding to the augmented reality frame period mode and corresponding to the plurality of DRX configuration sequences in connection mode is sent to the augmented reality device via the transceiver.

10. A method for configuring a discontinuous reception configuration for an extended reality device, characterized in that: Include: A DRX configuration message in a connection mode is received from a base station, wherein the DRX configuration message in the connection mode corresponds to an augmented reality frame period mode and corresponds to a plurality of DRX configuration sequences in the connection mode, and a unit of the augmented reality frame period mode is milliseconds, and the augmented reality frame period mode is a non-integer period mode; and One of the plurality of discontinuous receiving configuration sequences under connection modes is selected according to performance information of the extended reality device as a selected discontinuous receiving configuration sequence under connection mode of the extended reality device.

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