WO2021022512A1 - 缓存指示方法及装置、资源发送方法及装置和用户设备 - Google Patents

缓存指示方法及装置、资源发送方法及装置和用户设备 Download PDF

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Publication number
WO2021022512A1
WO2021022512A1 PCT/CN2019/099592 CN2019099592W WO2021022512A1 WO 2021022512 A1 WO2021022512 A1 WO 2021022512A1 CN 2019099592 W CN2019099592 W CN 2019099592W WO 2021022512 A1 WO2021022512 A1 WO 2021022512A1
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Prior art keywords
bsr
mac
sent
waiting
uplink
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PCT/CN2019/099592
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English (en)
French (fr)
Inventor
杨星
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN201980001618.0A priority Critical patent/CN110603843B/zh
Priority to PCT/CN2019/099592 priority patent/WO2021022512A1/zh
Publication of WO2021022512A1 publication Critical patent/WO2021022512A1/zh
Priority to US17/588,833 priority patent/US20220159697A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a cache indication method and device, a resource sending method and device, user equipment, base stations, and computer-readable storage media.
  • a direct link (sidelink) communication method is introduced.
  • the interface between the UE and the UE is a short-distance direct communication interface (PC-5).
  • Sidelink transmission is addressed through the source identification and target identification of the Media Access Control Address (MAC) layer, and there is no need to establish a connection before transmission.
  • MAC Media Access Control Address
  • the UE When the network needs to schedule transmission resources, the UE needs to report a buffer status (Buffer Status Report, BSR for short), which carries the amount of data to be transmitted in different logical channel groups, and the network determines how many transmission resources are scheduled for the UE according to the BSR.
  • BSR Buffer Status Report
  • the UE needs different transmission resources to send uplink data and sidelink data.
  • the uplink data to be sent and the sidelink data to send will trigger the BSR and the sidelink BSR respectively.
  • the BSR is carried by a MAC control element (Control Element, CE for short), and each MAC CE has a MAC subheader (subheader).
  • Each MAC subheader carries logical channel ID (Logical Channel ID, LCID for short), length, format and other information.
  • LCID Logical Channel ID
  • Some MAC CEs have a length of 0, which is implicitly indicated by MAC subheader carrying a specific LCID.
  • the priority order of placing the MAC PDU is BSR MAC CE, Sidelink BSR MAC CE, and Uplink Data Service Data Unit (Service Data Unit, SDU for short).
  • the network When the UE has a BSR and a sidelink BSR waiting to be sent at the same time, if the sidelink BSR is placed in the MAC PDU for transmission first, and there is no space to carry the BSR, the network does not know that the UE has a waiting BSR and only schedules the sidelink transmission resources, and the BSR It cannot be reported. You must wait for the BSR retransmission timer to expire before reporting again, which will increase the uplink service delay.
  • the network does not know that the UE has a waiting sidelink BSR and will not continue to schedule uplink transmission resources
  • the sidelink BSR cannot be reported, and the sidelink BSR retransmission timer must wait until the sidelink BSR retransmission timer expires before it can be reported again, resulting in increased sidelink service delay.
  • the present application discloses a buffer indication method and device, a resource transmission method and device, user equipment, a base station, and a computer-readable storage medium, so as to reduce the time delay of data transmission.
  • a cache indication method which is applied to a user equipment UE, and the method includes:
  • the base station sends a corresponding type of transmission resource for the UE according to the BSR waiting to be sent.
  • the determining that the uplink media access control MAC packet data unit PDU cannot carry both the first BSR MAC control unit CE and the second BSR MAC CE includes:
  • the MAC PDU space is not enough to carry the first BSR MAC CE and the second BSR MAC CE at the same time, it is determined that the MAC PDU cannot carry the first BSR MAC CE and the second BSR MAC at the same time CE.
  • the BSR waiting to be sent includes a first BSR or a second BSR
  • the first BSR is a direct link sidelink BSR, and the second BSR is an uplink BSR; or, the first BSR is an uplink BSR, and the second BSR is a direct link BSR.
  • the indication MAC CE indicates that the UE has a BSR waiting to be sent by carrying a MAC subheader that sets a logical channel identifier LCID.
  • a resource sending method applied to a base station includes:
  • the BSR waiting to be sent includes a first BSR or a second BSR
  • the first BSR is a direct link sidelink BSR, and the second BSR is an uplink BSR; or, the first BSR is an uplink BSR, and the second BSR is a direct link BSR.
  • the indication MAC CE indicates that the UE has a BSR waiting to be sent by carrying a MAC subheader that sets a logical channel identifier LCID.
  • a buffer indicating device which is applied to a user equipment UE, and the device includes:
  • Add a sending module configured to when there are both the first buffer status report BSR and the second BSR waiting to be sent, if it is determined that the uplink media access control MAC packet data unit PDU cannot carry the first BSR MAC control unit CE and the second BSR at the same time BSR MAC CE, an indication MAC CE is added to the uplink MAC PDU, and a MAC PDU with the indication MAC CE added to the base station is sent to the base station, and the indication MAC CE is used to indicate that the UE has a BSR waiting to be sent;
  • the first receiving module is configured to receive the uplink resource sent for the UE by the indication MAC CE added by the base station according to the adding sending module;
  • the sending module is configured to send the BSR MAC CE waiting to be sent to the base station based on the uplink resource received by the first receiving module;
  • the second receiving module is configured to receive the sending resource of the corresponding type sent by the base station according to the BSR waiting to be sent sent by the sending module for the UE.
  • a resource sending device applied to a base station includes:
  • the receiving module is configured to receive the media access control MAC packet data unit PDU sent by the user equipment UE;
  • the obtaining and sending module is configured to obtain an indication MAC CE from the MAC PDU received by the receiving module, and according to the indication MAC CE to send uplink resources for the UE, the indication MAC control unit CE is used to indicate the The UE has a BSR waiting to be sent;
  • a receiving and acquiring module configured to receive the BSR MAC CE that is waiting to be sent sent by the UE based on the uplink resource sent by the acquiring and sending module, and obtain the BSR waiting to be sent therefrom;
  • the sending module is configured to send a corresponding type of sending resource for the UE according to the BSR waiting to be sent acquired by the receiving and acquiring module.
  • a user equipment including:
  • a memory for storing processor executable instructions
  • the processor is configured to:
  • the base station sends a corresponding type of transmission resource for the UE according to the BSR waiting to be sent.
  • a base station including:
  • a memory for storing processor executable instructions
  • the processor is configured to:
  • a computer-readable storage medium having a computer instruction stored thereon, which when executed by a processor implements the steps of the foregoing cache instruction method.
  • a computer-readable storage medium having computer instructions stored thereon, which when executed by a processor implements the steps of the foregoing resource sending method.
  • the uplink MAC PDU cannot carry the first BSR MAC CE and the second BSR MAC CE at the same time
  • the indication MAC CE By obtaining the indication MAC CE from the MAC PDU, according to the indication MAC CE sends the uplink resource for the UE, so that the UE can send the BSR MAC CE waiting to be sent to the base station based on the uplink resource, and the base station sends the corresponding type of the UE according to the BSR waiting to be sent.
  • the sending resource enables the UE to send data based on the sending resource, thereby reducing data sending delay.
  • Fig. 1 is a flowchart of a cache indication method shown in an exemplary embodiment of the present application
  • Fig. 2 is a flowchart of a method for sending resources according to an exemplary embodiment of the present application
  • Fig. 3 is a signaling flow chart of a method for sending resources shown in an exemplary embodiment of the present application
  • Fig. 4 is a block diagram showing a cache indicating device according to an exemplary embodiment
  • Fig. 5 is a block diagram showing a device for sending resources according to an exemplary embodiment
  • Fig. 6 is a block diagram showing a device suitable for cache indication according to an exemplary embodiment
  • Fig. 7 is a block diagram showing a device suitable for resource sending according to an exemplary embodiment.
  • Fig. 1 is a flow chart of a cache indication method shown in an exemplary embodiment of the present application. This embodiment is described from the UE side. As shown in Fig. 1, the cache indication method includes:
  • step S101 when there is a first BSR and a second BSR waiting to be sent at the same time, if it is determined that the uplink MAC PDU cannot carry the first BSR MAC CE and the second BSR MAC CE at the same time, add the indication MAC CE to the uplink MAC PDU , And send a MAC PDU with an indication MAC CE to the base station.
  • the indication MAC CE is used to indicate that the UE has a BSR waiting to be sent.
  • the BSR waiting to be sent may include the first BSR or the second BSR.
  • the first BSR can be a sidelink BSR or an uplink BSR.
  • the second BSR may be an uplink BSR.
  • the first BSR is an uplink BSR
  • the second BSR may be a sidelink BSR.
  • the corresponding MAC CE can be added to the MAC PDU according to the priority order of the logical channel that triggers the first BSR and the second BSR. If the MAC PDU space is not enough to carry the first BSR MAC CE and second BSR MAC CE, it is determined that MAC PDU cannot carry the first BSR MAC CE and the second BSR MAC CE at the same time.
  • an indication MAC CE is added to the uplink MAC PDU, and the indication MAC CE is used to indicate that the UE has a BSR waiting to be sent.
  • the indication MAC CE can indicate that the UE has a BSR waiting to be sent by carrying a MAC subheader that sets the LCID, and the length of the indication MAC CE can be 0 bits.
  • the set LCID can be set as required, for example, LCID 10.
  • step S102 the receiving base station according to the indication MAC CE is the uplink resource sent by the UE.
  • the base station After receiving the MAC PDU, the base station obtains the indication MAC CE from it, learns that the UE has a BSR waiting to be sent according to the indication MAC CE, and sends uplink resources for the UE.
  • step S103 the BSR MAC CE waiting to be sent is sent to the base station based on the uplink resources.
  • the BSR MAC CE waiting to be sent is the first BSR MAC CE
  • the first BSR MAC CE is sent to the base station based on the uplink resource.
  • the BSR MAC CE waiting to be sent is the second BSR MAC CE, after receiving the uplink resource sent by the base station, the second BSR MAC CE is sent to the base station based on the uplink resource.
  • step S104 the receiving base station sends a corresponding type of transmission resource for the UE according to the BSR waiting to be sent.
  • the corresponding type of transmission resource received is a sidelink transmission resource. If the BSR waiting to be sent is an uplink BSR, the corresponding type of transmission resource received is an uplink transmission resource.
  • the indication MAC CE is added to the uplink MAC PDU , And send the MAC PDU with the indication MAC CE to the base station, so that the base station can send uplink resources for the UE according to the indication MAC CE, and the UE sends the BSR MAC CE waiting to be sent to the base station based on the uplink resource, and the base station according to the BSR waiting to send Send corresponding types of transmission resources for the UE, thereby reducing data transmission delay.
  • Fig. 2 is a flowchart of a method for sending resources shown in an exemplary embodiment of the present application. This embodiment is described from the base station side. As shown in Fig. 2, the method includes:
  • step S201 a MAC PDU sent by the UE is received.
  • step S202 an indication MAC CE is obtained from the MAC PDU, and the indication MAC CE sends uplink resources for the UE according to the indication.
  • the indication MAC CE is used to indicate that the UE has a BSR waiting to be sent.
  • the indicating MAC CE can indicate that the UE has a BSR waiting to be sent by carrying a MAC subheader that sets the LCID, and the length of the indicating MAC CE can be 0 bits.
  • the set LCID can be set as required, for example, LCID 10.
  • step S203 the BSR MAC CE that is waiting to be sent sent by the UE based on the uplink resource is received, and the BSR waiting to be sent is obtained from it.
  • step S204 the corresponding type of transmission resource is sent for the UE according to the acquired BSR waiting to be sent.
  • the indication MAC CE by obtaining the indication MAC CE from the MAC PDU, according to the indication MAC CE sends the uplink resource for the UE, so that the UE can send the BSR MAC CE waiting to be sent to the base station based on the uplink resource, and the base station is the UE according to the BSR waiting to be sent.
  • Send the corresponding type of transmission resource so that the UE can send data based on the transmission resource, thereby reducing data transmission delay.
  • Fig. 3 is a signaling flow chart of a resource sending method shown in an exemplary embodiment of the present application. This embodiment is described from the perspective of interaction between a base station and a UE. As shown in Fig. 3, the method includes:
  • step S301 when there is a first BSR and a second BSR waiting to be sent at the same time, if the UE determines that the uplink MAC PDU cannot carry the first BSR MAC CE and the second BSR MAC CE at the same time, then add an indication MAC to the uplink MAC PDU CE, and send a MAC PDU with an indication MAC CE to the base station, and the indication MAC CE is used to indicate that the UE has a BSR waiting to be sent.
  • step S302 the base station receives the MAC PDU sent by the UE.
  • step S303 the base station obtains the indication MAC CE from the MAC PDU, and sends uplink resources for the UE according to the indication MAC CE.
  • step S304 the UE receives the uplink resource sent by the base station for the UE according to the indication MAC CE.
  • step S305 the UE sends the BSR MAC CE waiting to be sent to the base station based on the received uplink resource.
  • step S306 the base station receives the BSR MAC CE that is waiting to be sent from the UE, and obtains the BSR waiting to be sent from it.
  • step S307 the base station sends a corresponding type of transmission resource for the UE according to the BSR waiting to be sent.
  • step S308 the UE receives a corresponding type of transmission resource sent by the base station, and sends data based on the transmission resource.
  • the priority of Uu logical channel 1 is 1
  • the logical channel group to which Uu logical channel 1 belongs is 1
  • the priority of sidelink logical channel 1 is 2
  • the sidelink logical channel 1 The sidelink logical channel group it belongs to is 1.
  • priority 2 is higher than priority 1.
  • the UE When Uu logical channel 1 arrives with 1 kb of data and Sidelink logical channel 1 arrives with 1 kb of data, the UE requests the base station for uplink transmission resources, and the base station schedules the uplink transmission resources for the UE. After the UE receives the uplink transmission resources, it starts to assemble the MAC PDU, and according to the priority of the logical channel that triggers the BSR, the sidelink BSR is first put into the MAC PDU. If the remaining space of the MAC PDU is not enough to carry the uplink BSR MAC CE, the indication MAC CE is added to the uplink MAC PDU. The UE sends the MAC PDU to the base station.
  • the base station schedules sidelink transmission resources that can carry 1kb data for the UE according to the sidelink BSR, and according to the indication, the MAC CE schedules uplink transmission resources for the UE.
  • the UE After receiving the uplink transmission resources, the UE starts to assemble the MAC PDU, puts the uplink BSR in the MAC PDU and sends it to the base station.
  • the base station schedules uplink transmission resources that can carry 1 kb of data for the UE according to the BSR, so that the UE can send data through the uplink transmission resources, reducing data transmission delay.
  • the priority of Uu logical channel 1 is 2
  • the logical channel group to which Uu logical channel 1 belongs is 1
  • the priority of sidelink logical channel 1 is 1
  • the sidelink logical channel 1 is 1.
  • priority 2 is higher than priority 1.
  • the UE When Uu logical channel 1 arrives with 1 kb of data and Sidelink logical channel 1 arrives with 1 kb of data, the UE requests uplink transmission resources from the base station.
  • the base station schedules uplink transmission resources for the UE, which can carry 1kb data.
  • the UE After receiving the uplink transmission resource, the UE starts to assemble the MAC PDU, and finds that the uplink resource can load the Uu data to be sent, and then puts the 1kb Uu data into the MAC PDU. If the remaining space of the MAC PDU is not enough to carry the sidelink BSR, an indication MAC CE is added to the uplink MAC PDU.
  • the UE sends the MAC PDU to the base station.
  • the base station schedules uplink transmission resources for the UE. After receiving the uplink transmission resources, the UE starts to assemble the MAC PDU, puts the sidelink BSR into the MAC PDU and sends it to the base station. The base station schedules a sidelink transmission resource that can carry 1kb of data for the UE according to the sidelink BSR, so that the UE can send data through the uplink transmission resource and reduce the data transmission delay.
  • the base station can obtain the indication MAC CE from the MAC PDU, and according to the indication MAC CE sends the uplink resource for the UE, so that the UE can send the unsent one to the base station based on the uplink resource.
  • the BSR-like MAC CE enables the base station to send the corresponding type of transmission resource for the UE according to the unsent BSR, so that the UE can send data based on the transmission resource, thereby reducing data transmission delay.
  • Fig. 4 is a block diagram showing a buffer indicating device according to an exemplary embodiment.
  • the device may be located in a UE. As shown in Fig. 4, the device includes:
  • the adding sending module 41 is configured to, when there are both the first buffer status report BSR and the second BSR waiting to be sent, if it is determined that the uplink media access control MAC packet data unit PDU cannot carry the first BSR MAC control unit CE and the second BSR at the same time
  • For BSR MAC CE an indication MAC CE is added to the uplink MAC PDU, and a MAC PDU with the indication MAC CE added is sent to the base station.
  • the indication MAC CE is used to indicate that the UE has a BSR waiting to be sent.
  • the BSR waiting to be sent may include the first BSR or the second BSR.
  • the first BSR can be a sidelink BSR or an uplink BSR.
  • the second BSR may be an uplink BSR.
  • the first BSR is an uplink BSR
  • the second BSR may be a sidelink BSR.
  • the corresponding MAC CE can be added to the MAC PDU according to the priority order of the logical channel that triggers the first BSR and the second BSR. If the MAC PDU space is not enough to carry the first BSR MAC CE and second BSR MAC CE, it is determined that MAC PDU cannot carry the first BSR MAC CE and the second BSR MAC CE at the same time.
  • an indication MAC CE is added to the uplink MAC PDU, and the indication MAC CE is used to indicate that the UE has a BSR waiting to be sent.
  • the indication MAC CE may indicate that the UE has a BSR waiting to be sent by carrying a MAC subheader that sets the LCID, and the length of the indication MAC CE may be 0 bits.
  • the set LCID can be set as required, for example, LCID 10.
  • the first receiving module 42 is configured to receive the uplink resource sent by the base station according to the indication MAC CE added by the adding sending module 41 for the UE.
  • the base station After receiving the MAC PDU, the base station obtains the indication MAC CE from it, learns that the UE has a BSR waiting to be sent according to the indication MAC CE, and sends uplink resources for the UE.
  • the sending module 43 is configured to send the BSR MAC CE waiting to be sent to the base station based on the uplink resource received by the first receiving module 42.
  • the BSR MAC CE waiting to be sent is the first BSR MAC CE
  • the first BSR MAC CE is sent to the base station based on the uplink resource.
  • the BSR MAC CE waiting to be sent is the second BSR MAC CE, after receiving the uplink resource sent by the base station, the second BSR MAC CE is sent to the base station based on the uplink resource.
  • the second receiving module 44 is configured to receive a corresponding type of transmission resource sent by the base station according to the BSR waiting to be sent sent by the sending module 43 for the UE.
  • the corresponding type of transmission resource received is a sidelink transmission resource. If the BSR waiting to be sent is an uplink BSR, the corresponding type of transmission resource received is an uplink transmission resource.
  • the indication MAC CE is added to the uplink MAC PDU , And send the MAC PDU with the indication MAC CE to the base station, so that the base station can send uplink resources for the UE according to the indication MAC CE, and the UE sends the BSR MAC CE waiting to be sent to the base station based on the uplink resource, and the base station according to the BSR waiting to send Send corresponding types of transmission resources for the UE, thereby reducing data transmission delay.
  • Fig. 5 is a block diagram showing a resource sending device according to an exemplary embodiment.
  • the device may be located in a base station. As shown in Fig. 5, the device includes:
  • the receiving module 51 is configured to receive the media access control MAC packet data unit PDU sent by the user equipment UE.
  • the acquiring and sending module 52 is configured to acquire the indication MAC CE from the MAC PDU received by the receiving module 51, according to the indication MAC CE to send uplink resources for the UE, and the indication MAC control unit CE to indicate that the UE has a BSR waiting to be sent.
  • the receiving and acquiring module 53 is configured to receive the BSR and MAC CE sent by the UE based on the uplink resource sent by the acquiring and sending module 52, and obtain the BSR waiting to be sent therefrom.
  • the sending module 54 is configured to send a corresponding type of sending resource for the UE according to the BSR waiting to be sent acquired by the receiving and acquiring module 53.
  • the indication MAC CE by obtaining the indication MAC CE from the MAC PDU, according to the indication MAC CE sends the uplink resource for the UE, so that the UE can send the BSR MAC CE waiting to be sent to the base station based on the uplink resource, and the base station is the UE according to the BSR waiting to be sent.
  • Send the corresponding type of transmission resource so that the UE can send data based on the transmission resource, thereby reducing data transmission delay.
  • Fig. 6 is a block diagram showing a device suitable for cache indication according to an exemplary embodiment.
  • the apparatus 600 may be user equipment such as a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, and a personal digital assistant.
  • the device 600 may include one or more of the following components: a processing component 602, a memory 604, a power supply component 606, a multimedia component 608, an audio component 610, an input/output (I/O) interface 612, a sensor component 614, And communication component 616.
  • the processing component 602 generally controls the overall operations of the device 600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing element 602 may include one or more processors 620 to execute instructions to complete all or part of the steps of the foregoing method.
  • the processing component 602 may include one or more modules to facilitate the interaction between the processing component 602 and other components.
  • the processing component 602 may include a multimedia module to facilitate the interaction between the multimedia component 608 and the processing component 602.
  • One of the processors 620 in the processing component 602 may be configured as:
  • the indication MAC CE is used to indicate that the UE has a BSR waiting to be sent;
  • the receiving base station sends corresponding types of transmission resources for the UE according to the BSR waiting to be sent.
  • the memory 604 is configured to store various types of data to support the operation of the device 600. Examples of these data include instructions for any application or method operating on the device 600, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 604 can be implemented by any type of volatile or nonvolatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable and Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable and Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic Disk Magnetic Disk or Optical Disk.
  • the power supply component 606 provides power to various components of the device 600.
  • the power supply component 606 may include a power management system, one or more power supplies, and other components associated with the generation, management, and distribution of power for the device 600.
  • the multimedia component 608 includes a screen that provides an output interface between the device 600 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touch, sliding, and gestures on the touch panel. The touch sensor can not only sense the boundary of the touch or slide action, but also detect the duration and pressure related to the touch or slide operation.
  • the multimedia component 608 includes a front camera and/or a rear camera. When the device 600 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 610 is configured to output and/or input audio signals.
  • the audio component 610 includes a microphone (MIC).
  • the microphone is configured to receive external audio signals.
  • the received audio signal can be further stored in the memory 604 or sent via the communication component 616.
  • the audio component 610 further includes a speaker for outputting audio signals.
  • the I/O interface 612 provides an interface between the processing component 602 and a peripheral interface module.
  • the aforementioned peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include but are not limited to: home button, volume button, start button, and lock button.
  • the sensor component 614 includes one or more sensors for providing the device 600 with various aspects of status assessment.
  • the sensor component 614 can detect the on/off status of the device 600 and the relative positioning of components, such as the display and keypad of the device 600.
  • the sensor component 614 can also detect the position change of the device 600 or a component of the device 600. The presence or absence of contact with the device 600, the orientation or acceleration/deceleration of the device 600, and the temperature change of the device 600.
  • the sensor component 614 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact.
  • the sensor component 614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 614 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 616 is configured to facilitate wired or wireless communication between the apparatus 600 and other devices.
  • the device 600 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof.
  • the communication component 616 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 616 further includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • the apparatus 600 may be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing equipment (DSPD), programmable logic devices (PLD), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • ASIC application specific integrated circuits
  • DSP digital signal processors
  • DSPD digital signal processing equipment
  • PLD programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • non-transitory computer-readable storage medium including instructions, such as the memory 604 including instructions, which can be executed by the processor 620 of the device 600 to complete the foregoing method.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
  • Fig. 7 is a block diagram showing another device suitable for resource sending according to an exemplary embodiment.
  • the apparatus 700 may be provided as a base station. 7, the device 700 includes a processing component 722, a wireless transmitting/receiving component 724, an antenna component 726, and a signal processing part specific to a wireless interface.
  • the processing component 722 may further include one or more processors.
  • One of the processors in the processing component 722 may be configured as:
  • the indication MAC control unit CE is used to indicate that the UE has a BSR waiting to be sent;
  • a non-transitory computer-readable storage medium including instructions is also provided, and the foregoing instructions can be executed by the processing component 722 of the device 700 to complete the foregoing resource sending method.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
  • the relevant part can refer to the part of the description of the method embodiment.
  • the device embodiments described above are merely illustrative.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place. , Or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solutions of the embodiments. Those of ordinary skill in the art can understand and implement it without creative work.

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Abstract

一种缓存指示方法及装置、资源发送方法及装置、用户设备、基站和计算机可读存储介质。其中，缓存指示方法包括：当同时存在等待发送的第一BSR和第二BSR时，若确定上行MAC PDU不能同时携带第一BSR MAC CE和第二BSR MAC CE，则在上行MAC PDU中添加指示MAC CE，并向基站发送添加有指示MAC CE的MAC PDU，该指示MAC CE用于指示UE存在等待发送的BSR；接收基站根据该指示MAC CE为UE发送的上行资源；基于上行资源向基站发送等待发送的BSR MAC CE；接收基站根据等待发送的BSR为UE发送的对应类型的发送资源；UE可基于该发送资源发送数据，从而减少数据发送时延。

Description

缓存指示方法及装置、资源发送方法及装置和用户设备 技术领域
本公开涉及通信技术领域，尤其涉及一种缓存指示方法及装置、资源发送方法及装置、用户设备、基站和计算机可读存储介质。
背景技术
第四代移动通信技术(4th Generation，简称4G)时代，为了支持用户设备(User Equipment，简称UE)与UE之间的直接通信，引入了直连链路(sidelink)通信方式。sidelink通信方式下，UE与UE之间的接口为短距离直接通信接口(PC-5)。Sidelink的传输通过媒体接入控制(Media Access Control Address，简称MAC)层的源标识和目标标识来实现寻址，在传输之前不需要建立连接。
当需要网络调度发送资源时，UE需要上报缓存状态(Buffer Status Report，简称BSR)，其中携带不同逻辑信道组中待发送的数据量，网络根据BSR决定给UE调度多少发送资源。
UE发送上行数据和sidelink数据需要不同的发送资源，上行待发数据和sidelink待发数据会分别触发BSR和sidelink BSR。
BSR通过MAC控制单元(Control Element，简称CE)来携带，每个MAC CE都有一个MAC子头(subheader)。每个MAC subheader均携带逻辑信道标识(Logical Channel ID，简称LCID)、长度、格式等信息。有些MAC CE的长度为0，通过携带特定LCID的MAC subheader来隐形指示。
在组装上行MAC包数据单元(Protocol Data Unit，简称PDU)时，放入MAC PDU的优先级顺序依次为BSR MAC CE、Sidelink BSR MAC CE和上行数据服务数据单元(Service Data Unit，简称SDU)。
第五代移动通信技术(5th Generation，简称5G)时代，Sidelink支持增强的车联网(Vehicle to everything，简称V2X)业务，上行支持超可靠低延迟通信(Ultra Reliable Low Latency Communications，简称URLLC)业务。在组装上行MAC PDU时，优先级会根据数据的优先级动态调整。
当UE同时存在等待发送的BSR和sidelink BSR时，如果优先将sidelink BSR放入MAC PDU中进行发送，没有空间携带BSR时，网络不知道UE有等待的BSR，只会调度sidelink发送资源，而BSR无法上报，必须等待BSR重传定时器超时才能再一次上报，会导致上行业务时延增加。
当UE同时存在等待发送的BSR和sidelink BSR时，如果优先将上行数据放入MAC PDU中进行发送，没有空间携带sidelink BSR时，网络不知道UE有等待的sidelink BSR，不会继续调度上行发送资源，而sidelink BSR无法上报，必须等待sidelink BSR重传定时器超时才能再一次上报，导致sidelink业务时延增加。
发明内容
有鉴于此，本申请公开了一种缓存指示方法及装置、资源发送方法及装置、用户设备、基站和计算机可读存储介质，以减少数据发送的时延。
根据本公开实施例的第一方面，提供一种缓存指示方法，应用于用户设备UE，所述方法包括：
当同时存在等待发送的第一缓存状态报告BSR和第二BSR时，若确定上行媒体接入控制MAC包数据单元PDU不能同时携带第一BSR MAC控制单元CE和第二BSR MAC CE，则在所述上行MAC PDU中添加指示MAC CE，并向基站发送添加有所述指示MAC CE的MAC PDU，所述指示MAC CE用于指示所述UE存在等待发送的BSR；
接收所述基站根据所述指示MAC CE为所述UE发送的上行资源；
基于所述上行资源向所述基站发送等待发送的BSR MAC CE；
接收所述基站根据所述等待发送的BSR为所述UE发送对应类型的发送资源。
在一实施例中，所述确定上行媒体接入控制MAC包数据单元PDU不能同时携带第一BSR MAC控制单元CE和第二BSR MAC CE，包括：
按照触发所述第一BSR和所述第二BSR的逻辑信道的优先级由高到低的顺序，向所述MAC PDU中添加对应的MAC CE；
若所述MAC PDU的空间不足以同时携带所述第一BSR MAC CE和所述第二BSR MAC CE，则确定所述MAC PDU不能同时携带所述第一BSR MAC CE和所述第二BSR MAC CE。
在一实施例中，所述等待发送的BSR包括第一BSR或第二BSR；
所述第一BSR为直连链路sidelink BSR，所述第二BSR为上行BSR；或者，所述第一BSR为上行BSR，所述第二BSR为直连链路BSR。
在一实施例中，所述指示MAC CE通过携带设定逻辑信道标识LCID的MAC子头来指示所述UE存在等待发送的BSR。
根据本公开实施例的第二方面，提供一种资源发送方法，应用于基站，所述方法包括：
接收用户设备UE发送的媒体接入控制MAC包数据单元PDU；
从所述MAC PDU中获取指示MAC CE，根据所述指示MAC CE为所述UE发送上行资源，所述指示MAC控制单元CE用于指示所述UE存在等待发送的BSR；
接收所述UE基于所述上行资源发送的等待发送的BSR MAC CE，并从中获取等待发送的BSR；
根据获取的所述等待发送的BSR为所述UE发送对应类型的发送资源。
在一实施例中，所述等待发送的BSR包括第一BSR或第二BSR；
所述第一BSR为直连链路sidelink BSR，所述第二BSR为上行BSR；或者，所述第一BSR为上行BSR，所述第二BSR为直连链路BSR。
在一实施例中，所述指示MAC CE通过携带设定逻辑信道标识LCID的MAC子头来指示所述UE存在等待发送的BSR。
根据本公开实施例的第三方面，提供一种缓存指示装置，应用于用户设备UE，所述装置包括：
添加发送模块，被配置为当当同时存在等待发送的第一缓存状态报告BSR和第二BSR时，若确定上行媒体接入控制MAC包数据单元PDU不能同时携带第一BSR MAC控制单元CE和第二BSR MAC CE，则在所述上行MAC PDU中添加指示MAC CE，并向基站发送添加有所述指示MAC CE的MAC PDU，所述指示MAC CE用于指示所述UE存在等待发送的BSR；
第一接收模块，被配置为接收所述基站根据所述添加发送模块添加的所述指示MAC CE为所述UE发送的上行资源；
发送模块，被配置为基于所述第一接收模块接收的所述上行资源向所述基站发送等待发送的BSR MAC CE；
第二接收模块，被配置为接收所述基站根据所述发送模块发送的所述等待发送的BSR为所述UE发送对应类型的发送资源。
根据本公开实施例的第四方面，提供一种资源发送装置，应用于基站，所述装置包括：
接收模块，被配置为接收用户设备UE发送的媒体接入控制MAC包数据单元PDU；
获取发送模块，被配置为从所述接收模块接收的所述MAC PDU中获取指示MAC CE，根据所述指示MAC CE为所述UE发送上行资源，所述指示MAC控制单元CE用于指示所述UE存在等待发送的BSR；
接收获取模块，被配置为接收所述UE基于所述获取发送模块发送的所述上行资源发送的等待发送的BSR MAC CE，并从中获取等待发送的BSR；
发送模块，被配置为根据所述接收获取模块获取的所述等待发送的BSR为所述UE发送对应类型的发送资源。
根据本公开实施例的第五方面，提供一种用户设备，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
当同时存在等待发送的第一缓存状态报告BSR和第二BSR时，若确定上行媒体接入控制MAC包数据单元PDU不能同时携带第一BSR MAC控制单元CE和第二BSR MAC CE，则在所述上行MAC PDU中添加指示MAC CE，并向基站发送添加有所述指示MAC CE的MAC PDU，所述指示MAC CE用于指示所述UE存在等待发送的BSR；
接收所述基站根据所述指示MAC CE为所述UE发送的上行资源；
基于所述上行资源向所述基站发送等待发送的BSR MAC CE；
接收所述基站根据所述等待发送的BSR为所述UE发送对应类型的发送资源。
根据本公开实施例的第六方面，提供一种基站，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
接收用户设备UE发送的媒体接入控制MAC包数据单元PDU；
从所述MAC PDU中获取指示MAC CE，根据所述指示MAC CE为所述UE发送上行资源，所述指示MAC控制单元CE用于指示所述UE存在等待发送的BSR；
接收所述UE基于所述上行资源发送的等待发送的BSR MAC CE，并从中获取等待发送的BSR；
根据获取的所述等待发送的BSR为所述UE发送对应类型的发送资源。
根据本公开实施例的第七方面，提供一种计算机可读存储介质，其上存储有计算机指令，该指令被处理器执行时实现上述缓存指示方法的步骤。
根据本公开实施例的第八方面，提供一种计算机可读存储介质，其上存储有计算机指令，该指令被处理器执行时实现上述资源发送方法的步骤。
本公开的实施例提供的技术方案可以包括以下有益效果：
通过当同时存在等待发送的第一BSR和第二BSR时，若确定上行MAC PDU不能同时携带第一BSR MAC CE和第二BSR MAC CE，则在上行MAC PDU中添加指示MAC CE，并向基站发送添加有该指示MAC CE的MAC PDU，使得基站可以根据该指示MAC CE为UE发送上行资源，UE基于该上行资源向基站发送等待发送的BSR MAC CE，基站根据等待发送的BSR为UE发送对应类型的发送资源，从而减少数据发送时延。
通过从MAC PDU中获取指示MAC CE，根据该指示MAC CE为UE发送上行资源，使得UE可以基于该上行资源向基站发送等待发送的BSR MAC CE，基站根据等待发送的BSR为UE发送对应类型的发送资源，使得UE可以基于该发送资源发送数据，从而减少数据发送时延。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施 例，并与说明书一起用于解释本发明的原理。
图1是本申请一示例性实施例示出的一种缓存指示方法的流程图；
图2是本申请一示例性实施例示出的一种资源发送方法的流程图；
图3是本申请一示例性实施例示出的一种资源发送方法的信令流程图；
图4是根据一示例性实施例示出的一种缓存指示装置的框图；
图5是根据一示例性实施例示出的一种资源发送装置的框图；
图6是根据一示例性实施例示出的一种适用于缓存指示装置的框图；
图7是根据一示例性实施例示出的一种适用于资源发送装置的框图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。
图1是本申请一示例性实施例示出的一种缓存指示方法的流程图，该实施例从UE侧进行描述，如图1所示，该缓存指示方法包括：
在步骤S101中，当同时存在等待发送的第一BSR和第二BSR时，若确定上行MAC PDU不能同时携带第一BSR MAC CE和第二BSR MAC CE，则在上行MAC PDU中添加指示MAC CE，并向基站发送添加有指示MAC CE的MAC PDU，该指示MAC CE用于指示UE存在等待发送的BSR。
其中，等待发送的BSR可以包括第一BSR或第二BSR。第一BSR可以为sidelink BSR或上行BSR。当第一BSR为sidelink BSR时，第二BSR可以为上行BSR。当第一BSR为上行BSR时，第二BSR可以为sidelink BSR。
在该实施例中，可以按照触发第一BSR和第二BSR的逻辑信道的优先级由高到低的顺序，向MAC PDU中添加对应的MAC CE，若MAC PDU的空间不足以同时携带第一BSR MAC CE和第二BSR MAC CE，则确定MAC PDU不能同时携带第一BSR MAC CE和第二BSR MAC CE。
在该实施例中，若确定MAC PDU不能同时携带第一BSR MAC CE和第二BSR  MAC CE，则在上行MAC PDU中添加指示MAC CE，该指示MAC CE用于指示UE存在等待发送的BSR。
其中，指示MAC CE可以通过携带设定LCID的MAC子头来指示UE存在等待发送的BSR，该指示MAC CE的长度可以为0比特。设定LCID可以根据需要设置，例如为LCID 10。
在步骤S102中，接收基站根据该指示MAC CE为UE发送的上行资源。
基站在接收到MAC PDU之后，从中获取指示MAC CE，根据该指示MAC CE获知UE存在等待发送的BSR，为UE发送上行资源。
在步骤S103中，基于上行资源向基站发送等待发送的BSR MAC CE。
在该实施例中，若等待发送的BSR MAC CE为第一BSR MAC CE，则在接收基站发送的上行资源后，基于该上行资源向基站发送第一BSR MAC CE。若等待发送的BSR MAC CE为第二BSR MAC CE，则在接收基站发送的上行资源后，基于该上行资源向基站发送第二BSR MAC CE。
在步骤S104中，接收基站根据等待发送的BSR为UE发送对应类型的发送资源。
在该实施例中，若等待发送的BSR为sidelink BSR，则接收的对应类型的发送资源为sidelink发送资源。若等待发送的BSR为上行BSR，则接收的对应类型的发送资源为上行发送资源。
上述实施例，通过当同时存在等待发送的第一BSR和第二BSR时，若确定上行MAC PDU不能同时携带第一BSR MAC CE和第二BSR MAC CE，则在上行MAC PDU中添加指示MAC CE，并向基站发送添加有该指示MAC CE的MAC PDU，使得基站可以根据该指示MAC CE为UE发送上行资源，UE基于该上行资源向基站发送等待发送的BSR MAC CE，基站根据等待发送的BSR为UE发送对应类型的发送资源，从而减少数据发送时延。
图2是本申请一示例性实施例示出的一种资源发送方法的流程图，该实施例从基站侧进行描述，如图2所示，该方法包括：
在步骤S201中，接收UE发送的MAC PDU。
在步骤S202中，从MAC PDU中获取指示MAC CE，根据该指示MAC CE为UE发送上行资源，该指示MAC CE用于指示UE存在等待发送的BSR。
其中，指示MAC CE可以通过携带设定LCID的MAC子头来指示UE存在等待发送的BSR，指示MAC CE的长度可以为0比特。设定LCID可以根据需要设置，例如为LCID 10。
在步骤S203中，接收UE基于上行资源发送的等待发送的BSR MAC CE，并从中获取等待发送的BSR。
在步骤S204中，根据获取的等待发送的BSR为UE发送对应类型的发送资源。
其中，可以根据获取的直连链路sidelink BSR为UE发送sidelink发送资源，也可以根据获取的上行BSR为UE发送上行发送资源。
上述实施例，通过从MAC PDU中获取指示MAC CE，根据该指示MAC CE为UE发送上行资源，使得UE可以基于该上行资源向基站发送等待发送的BSR MAC CE，基站根据等待发送的BSR为UE发送对应类型的发送资源，使得UE可以基于该发送资源发送数据，从而减少数据发送时延。
图3是本申请一示例性实施例示出的一种资源发送方法的信令流程图，该实施例从基站和UE交互的角度进行描述，如图3所示，该方法包括：
在步骤S301中，当同时存在等待发送的第一BSR和第二BSR时，若UE确定上行MAC PDU不能同时携带第一BSR MAC CE和第二BSR MAC CE，则在上行MAC PDU中添加指示MAC CE，并向基站发送添加有指示MAC CE的MAC PDU，该指示MAC CE用于指示UE存在等待发送的BSR。
在步骤S302中，基站接收UE发送的MAC PDU。
在步骤S303中，基站从MAC PDU中获取指示MAC CE，根据该指示MAC CE为UE发送上行资源。
在步骤S304中，UE接收基站根据指示MAC CE为UE发送的上行资源。
在步骤S305中，UE基于接收的上行资源向基站发送等待发送的BSR MAC CE。
在步骤S306中，基站接收UE发送的等待发送的BSR MAC CE，并从中获取等待发送的BSR。
在步骤S307中，基站根据等待发送的BSR为UE发送对应类型的发送资源。
在步骤S308中，UE接收基站发送的对应类型的发送资源，并基于该发送资源发送数据。
应用示例一：
假设，UE有Uu逻辑信道1和sidelink逻辑信道1，Uu逻辑信道1的优先级为1，Uu逻辑信道1所属的逻辑信道组为1，sidelink逻辑信道1的优先级为2，sidelink逻辑信道1所属的sidelink逻辑信道组为1。其中，优先级2高于优先级1。
当Uu逻辑信道1到来数据1kb，Sidelink逻辑信道1到来数据1kb时，UE向基站请求上行发送资源，基站为UE调度上行发送资源。UE收到上行发送资源后开始组装MAC PDU，根据触发BSR的逻辑信道的优先级，优先将sidelink BSR放入MAC PDU中。若MAC PDU的剩余空间不足以携带上行BSR MAC CE，则在上行MAC PDU中添加指示MAC CE。UE将MAC PDU发送给基站。基站根据sidelink BSR为UE调度可携带1kb数据的sidelink发送资源，并根据该指示MAC CE为UE调度上行发送资源。UE收到上行发送资源后开始组装MAC PDU，将上行BSR放入MAC PDU中发送给基站。基站根据BSR为UE调度可携带1kb数据的上行发送资源，从而使得UE可以通过该上行发送资源发送数据，减少数据发送时延。
应用示例二：
假设，UE有Uu逻辑信道1和sidelink逻辑信道1，Uu逻辑信道1的优先级为2，Uu逻辑信道1所属的逻辑信道组为1，sidelink逻辑信道1的优先级为1，sidelink逻辑信道1所属的sidelink逻辑信道组为1。其中，优先级2高于优先级1。
当Uu逻辑信道1到来数据1kb，Sidelink逻辑信道1到来数据1kb时，UE向基站请求上行发送资源。基站为UE调度上行发送资源，可携带1kb数据。UE收到上行发送资源后开始组装MAC PDU，发现上行资源可以将Uu待发数据装入，则将1kb的Uu数据放入MAC PDU。若MAC PDU的剩余空间不足以携带sidelink BSR，则在上行MAC PDU中添加指示MAC CE。UE将MAC PDU发送给基站。基站根据该指示MAC CE为UE调度上行发送资源。UE收到上行发送资源后开始组装MAC PDU，将sidelink BSR放入MAC PDU中发送给基站。基站根据sidelink BSR为UE调度可携带1kb数据的sidelink发送资源，从而使得UE可以通过该上行发送资源发送数据，减少数据发送时延。
上述实施例，通过基站和UE之间的交互，使得基站可以从MAC PDU中获取指示MAC CE，根据该指示MAC CE为UE发送上行资源，使得UE可以基于该上行资源向基站发送未发送的一类BSR MAC CE，使得基站根据未发送的BSR为UE发送对应类型的发送资源，使得UE可以基于该发送资源发送数据，从而减少数据发送时延。
图4是根据一示例性实施例示出的一种缓存指示装置的框图，该装置可以位于UE中，如图4所示，该装置包括：
添加发送模块41被配置为当当同时存在等待发送的第一缓存状态报告BSR和第二BSR时，若确定上行媒体接入控制MAC包数据单元PDU不能同时携带第一BSR MAC控制单元CE和第二BSR MAC CE，则在上行MAC PDU中添加指示MAC CE，并向基站发送添加有指示MAC CE的MAC PDU，该指示MAC CE用于指示UE存在等待发送的BSR。
其中，等待发送的BSR可以包括第一BSR或第二BSR。第一BSR可以为sidelink BSR或上行BSR。当第一BSR为sidelink BSR时，第二BSR可以为上行BSR。当第一BSR为上行BSR时，第二BSR可以为sidelink BSR。
在该实施例中，可以按照触发第一BSR和第二BSR的逻辑信道的优先级由高到低的顺序，向MAC PDU中添加对应的MAC CE，若MAC PDU的空间不足以同时携带第一BSR MAC CE和第二BSR MAC CE，则确定MAC PDU不能同时携带第一BSR MAC CE和第二BSR MAC CE。
在该实施例中，若确定MAC PDU不能同时携带第一BSR MAC CE和第二BSR MAC CE，则在上行MAC PDU中添加指示MAC CE，该指示MAC CE用于指示UE存在等待发送的BSR。
其中，该指示MAC CE可以通过携带设定LCID的MAC子头来指示UE存在等待发送的BSR，该指示MAC CE的长度可以为0比特。设定LCID可以根据需要设置，例如为LCID 10。
第一接收模块42被配置为接收基站根据添加发送模块41添加的指示MAC CE为UE发送的上行资源。
基站在接收到MAC PDU之后，从中获取指示MAC CE，根据该指示MAC CE获知UE存在等待发送的BSR，为UE发送上行资源。
发送模块43被配置为基于第一接收模块42接收的上行资源向基站发送等待发送的BSR MAC CE。
在该实施例中，若等待发送的BSR MAC CE为第一BSR MAC CE，则在接收基站发送的上行资源后，基于该上行资源向基站发送第一BSR MAC CE。若等待发送的BSR MAC CE为第二BSR MAC CE，则在接收基站发送的上行资源后，基于该上行资源向基 站发送第二BSR MAC CE。
第二接收模块44被配置为接收基站根据发送模块43发送的等待发送的BSR为UE发送对应类型的发送资源。
在该实施例中，若等待发送的BSR为sidelink BSR，则接收的对应类型的发送资源为sidelink发送资源。若等待发送的BSR为上行BSR，则接收的对应类型的发送资源为上行发送资源。
上述实施例，通过当同时存在等待发送的第一BSR和第二BSR时，若确定上行MAC PDU不能同时携带第一BSR MAC CE和第二BSR MAC CE，则在上行MAC PDU中添加指示MAC CE，并向基站发送添加有该指示MAC CE的MAC PDU，使得基站可以根据该指示MAC CE为UE发送上行资源，UE基于该上行资源向基站发送等待发送的BSR MAC CE，基站根据等待发送的BSR为UE发送对应类型的发送资源，从而减少数据发送时延。
图5是根据一示例性实施例示出的一种资源发送装置的框图，该装置可以位于基站中，如图5所示，该装置包括：
接收模块51被配置为接收用户设备UE发送的媒体接入控制MAC包数据单元PDU。
获取发送模块52被配置为从接收模块51接收的MAC PDU中获取指示MAC CE，根据指示MAC CE为UE发送上行资源，指示MAC控制单元CE用于指示UE存在等待发送的BSR。
接收获取模块53被配置为接收UE基于获取发送模块52发送的上行资源发送的等待发送的BSR MAC CE，并从中获取等待发送的BSR。
发送模块54被配置为根据接收获取模块53获取的等待发送的BSR为UE发送对应类型的发送资源。
其中，可以根据获取的直连链路sidelink BSR为UE发送sidelink发送资源，也可以根据获取的上行BSR为UE发送上行发送资源。
上述实施例，通过从MAC PDU中获取指示MAC CE，根据该指示MAC CE为UE发送上行资源，使得UE可以基于该上行资源向基站发送等待发送的BSR MAC CE，基站根据等待发送的BSR为UE发送对应类型的发送资源，使得UE可以基于该发送资 源发送数据，从而减少数据发送时延。
图6是根据一示例性实施例示出的一种适用于缓存指示装置的框图。例如，装置600可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等用户设备。
参照图6，装置600可以包括以下一个或多个组件：处理组件602，存储器604，电源组件606，多媒体组件608，音频组件610，输入/输出(I/O)的接口612，传感器组件614，以及通信组件616。
处理组件602通常控制装置600的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理元件602可以包括一个或多个处理器620来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件602可以包括一个或多个模块，便于处理组件602和其他组件之间的交互。例如，处理部件602可以包括多媒体模块，以方便多媒体组件608和处理组件602之间的交互。
处理组件602中的其中一个处理器620可以被配置为：
当同时存在等待发送的第一缓存状态报告BSR和第二BSR时，若确定上行媒体接入控制MAC包数据单元PDU不能同时携带第一BSR MAC控制单元CE和第二BSR MAC CE，则在上行MAC PDU中添加指示MAC CE，并向基站发送添加有指示MAC CE的MAC PDU，该指示MAC CE用于指示UE存在等待发送的BSR；
接收基站根据指示MAC CE为UE发送的上行资源；
基于上行资源向基站发送等待发送的BSR MAC CE；
接收基站根据等待发送的BSR为UE发送对应类型的发送资源。
存储器604被配置为存储各种类型的数据以支持在设备600的操作。这些数据的示例包括用于在装置600上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器604可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件606为装置600的各种组件提供电力。电源组件606可以包括电源管理系统，一个或多个电源，及其他与为装置600生成、管理和分配电力相关联的组件。
多媒体组件608包括在装置600和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件608包括一个前置摄像头和/或后置摄像头。当设备600处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件610被配置为输出和/或输入音频信号。例如，音频组件610包括一个麦克风(MIC)，当装置600处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器604或经由通信组件616发送。在一些实施例中，音频组件610还包括一个扬声器，用于输出音频信号。
I/O接口612为处理组件602和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件614包括一个或多个传感器，用于为装置600提供各个方面的状态评估。例如，传感器组件614可以检测到设备600的打开/关闭状态，组件的相对定位，例如组件为装置600的显示器和小键盘，传感器组件614还可以检测装置600或装置600一个组件的位置改变，用户与装置600接触的存在或不存在，装置600方位或加速/减速和装置600的温度变化。传感器组件614可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件614还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件614还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件616被配置为便于装置600和其他设备之间有线或无线方式的通信。装置600可以接入基于通信标准的无线网络，如WiFi，2G或3G，或它们的组合。在一个示例性实施例中，通信部件616经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，通信部件616还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置600可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器604，上述指令可由装置600的处理器620执行以完成上述方法。例如，非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
图7是根据一示例性实施例示出的另一种适用于资源发送装置的框图。装置700可以被提供为一基站。参照图7，装置700包括处理组件722、无线发射/接收组件724、天线组件726、以及无线接口特有的信号处理部分，处理组件722可进一步包括一个或多个处理器。
处理组件722中的其中一个处理器可以被配置为：
接收用户设备UE发送的媒体接入控制MAC包数据单元PDU；
从MAC PDU中获取指示MAC控制单元CE，根据指示MAC CE为UE发送上行资源，该指示MAC CE用于指示UE存在等待发送的BSR；
接收UE基于上行资源发送的等待发送的BSR MAC CE，并从中获取等待发送的BSR；
根据获取的等待发送的BSR为UE发送对应类型的发送资源。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，上述指令可由装置700的处理组件722执行以完成上述资源发送方法。例如，非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
对于装置实施例而言，由于其基本对应于方法实施例，所以相关之处参见方法实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
本领域技术人员在考虑说明书及实践这里公开的公开后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (13)

  1. 一种缓存指示方法，其特征在于，应用于用户设备UE，所述方法包括：
    当同时存在等待发送的第一缓存状态报告BSR和第二BSR时，若确定上行媒体接入控制MAC包数据单元PDU不能同时携带第一BSR MAC控制单元CE和第二BSR MAC CE，则在所述上行MAC PDU中添加指示MAC CE，并向基站发送添加有所述指示MAC CE的MAC PDU，所述指示MAC CE用于指示所述UE存在等待发送的BSR；
    接收所述基站根据所述指示MAC CE为所述UE发送的上行资源；
    基于所述上行资源向所述基站发送等待发送的BSR MAC CE；
    接收所述基站根据所述等待发送的BSR为所述UE发送对应类型的发送资源。
  2. 根据权利要求1所述的方法，其特征在于，所述确定上行媒体接入控制MAC包数据单元PDU不能同时携带第一BSR MAC控制单元CE和第二BSR MAC CE，包括：
    按照触发所述第一BSR和所述第二BSR的逻辑信道的优先级由高到低的顺序，向所述MAC PDU中添加对应的MAC CE；
    若所述MAC PDU的空间不足以同时携带所述第一BSR MAC CE和所述第二BSR MAC CE，则确定所述MAC PDU不能同时携带所述第一BSR MAC CE和所述第二BSR MAC CE。
  3. 根据权利要求1或2所述的方法，其特征在于，所述等待发送的BSR包括第一BSR或第二BSR；
    所述第一BSR为直连链路sidelink BSR，所述第二BSR为上行BSR；或者，所述第一BSR为上行BSR，所述第二BSR为直连链路BSR。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述指示MAC CE通过携带设定逻辑信道标识LCID的MAC子头来指示所述UE存在等待发送的BSR。
  5. 一种资源发送方法，其特征在于，应用于基站，所述方法包括：
    接收用户设备UE发送的媒体接入控制MAC包数据单元PDU；
    从所述MAC PDU中获取指示MAC控制单元CE，根据所述指示MAC CE为所述UE发送上行资源，所述指示MAC CE用于指示所述UE存在等待发送的BSR；
    接收所述UE基于所述上行资源发送的等待发送的BSR MAC CE，并从中获取等待发送的BSR；
    根据获取的所述等待发送的BSR为所述UE发送对应类型的发送资源。
  6. 根据权利要求5所述的方法，其特征在于，所述等待发送的BSR包括第一BSR或第二BSR；
    所述第一BSR为直连链路sidelink BSR，所述第二BSR为上行BSR；或者，所述第一BSR为上行BSR，所述第二BSR为直连链路BSR。
  7. 根据权利要求5或6所述的方法，其特征在于，所述指示MAC CE通过携带设定逻辑信道标识LCID的MAC子头来指示所述UE存在等待发送的BSR。
  8. 一种缓存指示装置，其特征在于，应用于用户设备UE，所述装置包括：
    添加发送模块，被配置为当当同时存在等待发送的第一缓存状态报告BSR和第二BSR时，若确定上行媒体接入控制MAC包数据单元PDU不能同时携带第一BSR MAC控制单元CE和第二BSR MAC CE，则在所述上行MAC PDU中添加指示MAC CE，并向基站发送添加有所述指示MAC CE的MAC PDU，所述指示MAC CE用于指示所述UE存在等待发送的BSR；
    第一接收模块，被配置为接收所述基站根据所述添加发送模块添加的所述指示MAC CE为所述UE发送的上行资源；
    发送模块，被配置为基于所述第一接收模块接收的所述上行资源向所述基站发送等待发送的BSR MAC CE；
    第二接收模块，被配置为接收所述基站根据所述发送模块发送的所述等待发送的BSR为所述UE发送对应类型的发送资源。
  9. 一种资源发送装置，其特征在于，应用于基站，所述装置包括：
    接收模块，被配置为接收用户设备UE发送的媒体接入控制MAC包数据单元PDU；
    获取发送模块，被配置为从所述接收模块接收的所述MAC PDU中获取指示MAC CE，根据所述指示MAC CE为所述UE发送上行资源，所述指示MAC控制单元CE用于指示所述UE存在等待发送的BSR；
    接收获取模块，被配置为接收所述UE基于所述获取发送模块发送的所述上行资源发送的等待发送的BSR MAC CE，并从中获取等待发送的BSR；
    发送模块，被配置为根据所述接收获取模块获取的所述等待发送的BSR为所述UE发送对应类型的发送资源。
  10. 一种用户设备，其特征在于，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    当同时存在等待发送的第一缓存状态报告BSR和第二BSR时，若确定上行媒体接入控 制MAC包数据单元PDU不能同时携带第一BSR MAC控制单元CE和第二BSR MAC CE，则在所述上行MAC PDU中添加指示MAC CE，并向基站发送添加有所述指示MAC CE的MAC PDU，所述指示MAC CE用于指示所述UE存在等待发送的BSR；
    接收所述基站根据所述指示MAC CE为所述UE发送的上行资源；
    基于所述上行资源向所述基站发送等待发送的BSR MAC CE；
    接收所述基站根据所述等待发送的BSR为所述UE发送对应类型的发送资源。
  11. 一种基站，其特征在于，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    接收用户设备UE发送的媒体接入控制MAC包数据单元PDU；
    从所述MAC PDU中获取指示MAC CE，根据所述指示MAC CE为所述UE发送上行资源，所述指示MAC控制单元CE用于指示所述UE存在等待发送的BSR；
    接收所述UE基于所述上行资源发送的等待发送的BSR MAC CE，并从中获取等待发送的BSR；
    根据获取的所述等待发送的BSR为所述UE发送对应类型的发送资源。
  12. 一种计算机可读存储介质，其上存储有计算机指令，其特征在于，该指令被处理器执行时实现权利要求1-4任一项所述的缓存指示方法的步骤。
  13. 一种计算机可读存储介质，其上存储有计算机指令，其特征在于，该指令被处理器执行时实现权利要求5-7任一项所述的资源发送方法的步骤。
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