WO2021179263A1 - 直连链路中目的地址选择方法、装置及存储介质 - Google Patents

直连链路中目的地址选择方法、装置及存储介质 Download PDF

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Publication number
WO2021179263A1
WO2021179263A1 PCT/CN2020/079041 CN2020079041W WO2021179263A1 WO 2021179263 A1 WO2021179263 A1 WO 2021179263A1 CN 2020079041 W CN2020079041 W CN 2020079041W WO 2021179263 A1 WO2021179263 A1 WO 2021179263A1
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Prior art keywords
destination address
logical channel
drx
selecting
direct link
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PCT/CN2020/079041
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English (en)
French (fr)
Inventor
杨星
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北京小米移动软件有限公司
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Publication date
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 US17/910,347 priority Critical patent/US20230156855A1/en
Priority to PCT/CN2020/079041 priority patent/WO2021179263A1/zh
Priority to CN202080000533.3A priority patent/CN111466151B/zh
Priority to KR1020227035289A priority patent/KR20220153060A/ko
Priority to JP2022554413A priority patent/JP7425890B2/ja
Priority to EP20924040.7A priority patent/EP4120746A4/en
Priority to BR112022017974A priority patent/BR112022017974A2/pt
Publication of WO2021179263A1 publication Critical patent/WO2021179263A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H04W52/0232—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal according to average transmission signal activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a method, device and storage medium for selecting a destination address in a direct link.
  • a direct link (Sidelink) communication method is introduced.
  • Sidelink transmission is addressed through the source identification and destination identification of the Medium Access Control (MAC) layer, and there is no need to establish a connection before transmission.
  • MAC Medium Access Control
  • multiple logical channels can be established between terminals performing Sidelink communication for data transmission.
  • the terminal receives a Sidelink transmission permission resource (Sidelink grant), it selects a logical channel to send data through a logical channel priority selection method (Logical Channel Prioritization, LCP).
  • Sidelink transmission permission resource Sidelink grant
  • LCP Logical Channel Prioritization
  • the network device can configure Discontinuous Reception (DRX) for the terminal.
  • the DRX configuration includes inactivity timer, on duration timer, cycle and start. Offset etc.
  • the terminal may only monitor the physical downlink control channel (PDCCH) during the inactivity timer start and wake-up period, and the terminal may not monitor the PDCCH channel at other times, thereby saving power consumption.
  • PDCCH physical downlink control channel
  • the terminal Whenever the terminal receives the DCI carrying its own C-RNTI on the PDCCH, it will start the inactivity timer. The terminal will also periodically start the wake-up timer.
  • the present disclosure provides a method, device and storage medium for selecting a destination address in a direct link.
  • a method for selecting a destination address in a direct link which is applied to a terminal, and includes:
  • selecting a destination address for sending the data to be sent based on the DRX parameters, the DRX status, and the priority of the logical channel includes:
  • the destination address corresponding to the logical channel with the highest priority is selected among the logical channels with a bucket capacity greater than zero.
  • selecting a destination address for sending the data to be sent based on the DRX parameters, the DRX status, and the priority of the logical channel includes:
  • the destination address is not configured with DRX parameters, or configured with DRX parameters and the DRX state is in the awake state, determine the logical channel with a bucket capacity greater than zero among the logical channels where data is to be sent, and if the bucket capacity is greater than zero Select the destination address corresponding to the logical channel with the highest priority among the logical channels.
  • the priority is determined based on the sum of the original priority of the logical channel and the priority offset of the logical channel.
  • the logical channel priority offset is determined based on the logical channel, or is determined based on the destination address.
  • the data to be sent in each logical channel corresponding to the destination address is sent on the designated direct link permitted resource.
  • the designated direct link permitted resource is determined based on downlink control information, or determined based on pre-configuration information, or is independently selected by the terminal.
  • the destination address is configured with DRX parameters and is in the dormant state, then the destination address configured with DRX parameters and is in the dormant state is ignored.
  • a device for selecting a destination address in a direct link which is applied to a terminal, and includes:
  • the determining unit is used to determine the discontinuous reception DRX parameters and the DRX status of the destination address corresponding to the logical channel, where the logical channel is the logical channel to which data is to be sent; the selecting unit is used to determine the DRX parameters and the DRX status based on the DRX parameters and the DRX status And the priority of the logical channel, selecting the destination address for sending the data to be sent.
  • the selection unit is configured to select a destination address for sending the data to be sent based on the DRX parameter, the DRX state, and the priority of the logical channel in the following manner:
  • the destination address corresponding to the logical channel with the highest priority is selected among the logical channels with a bucket capacity greater than zero.
  • the selection unit selects the destination address for sending the data to be sent based on the DRX parameter, the DRX state, and the priority of the logical channel in the following manner:
  • the destination address is not configured with DRX parameters, or configured with DRX parameters and the DRX state is in the awake state, determine the logical channel with a bucket capacity greater than zero among the logical channels where data is to be sent, and if the bucket capacity is greater than zero Select the destination address corresponding to the logical channel with the highest priority among the logical channels.
  • the priority is determined based on the sum of the original priority of the logical channel and the priority offset of the logical channel.
  • the logical channel priority offset is determined based on the logical channel, or is determined based on the destination address.
  • the device for selecting a direct link destination address further includes a sending unit, and the sending unit is further configured to: send data in each logical channel corresponding to the destination address on the designated direct link permitted resource Data to be sent.
  • the designated direct link permitted resource is determined based on downlink control information, or determined based on pre-configuration information, or is independently selected by the terminal.
  • the selection unit is further configured to: when the destination address is configured with DRX parameters and is in a dormant state, ignoring the destination address configured with DRX parameters and is in a dormant state.
  • a device for selecting a destination address in a direct link including:
  • a processor a memory for storing executable instructions of the processor; wherein the processor is configured to: execute the method for selecting a destination address in a direct link described in the first aspect or any one of the implementation manners of the first aspect .
  • a non-transitory computer-readable storage medium When instructions in the storage medium are executed by a processor of a mobile terminal, the mobile terminal can execute the first aspect or the first aspect.
  • the technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: based on the DRX parameters and DRX status of the destination address corresponding to the logical channel of the data to be sent, and the priority of the logical channel, selecting the destination address for sending the data to be sent can avoid Send data in the non-awake window to avoid data delay and data loss.
  • Fig. 1 is a schematic diagram showing a direct communication system according to an exemplary embodiment.
  • Fig. 2 is a schematic diagram showing a direct link protocol stack according to an exemplary embodiment.
  • Fig. 3 is a structural diagram showing a MAC SL-SCH subheader according to an exemplary embodiment.
  • Fig. 4 is a schematic diagram showing the structure of a MAC PDU according to an exemplary embodiment.
  • Fig. 5 is a flowchart showing an implementation of a method for selecting a destination address in a direct link according to an exemplary embodiment.
  • Fig. 6 is a block diagram showing a device for selecting a destination address in a direct link according to an exemplary embodiment.
  • Fig. 7 is a block diagram showing a device according to an exemplary embodiment.
  • the direct connection communication method provided by the embodiment of the present disclosure can be applied to the direct connection communication system shown in FIG. 1.
  • the network device configures the directly connected communication device 1 with various transmission parameters for data transmission.
  • the directly connected communication device 1 serves as a data sending end
  • the directly connected communication device 2 serves as a data receiving end, and the two communicate directly.
  • the link for communication between the network device and the directly connected communication device is an uplink and a downlink
  • the link between the directly connected communication device and the directly connected communication device is a direct link (Sidelink).
  • the communication between the directly connected communication device and other devices can be transferred through the base station and the core network, that is, the uplink and downlink between the terminal device and the base station in the original cellular network are used for communication, or it can be directly passed between the devices.
  • Direct link to communicate Compared with Uu interface communication, Sidelink communication has the characteristics of short delay and low overhead, and is very suitable for direct communication between directly connected communication devices and other peripheral devices that are close to geographical locations.
  • the scenario of direct communication between directly connected communication devices involved in the present disclosure may be, for example, a vehicle-to-other node (V2X) wireless communication scenario for vehicles.
  • V represents the vehicle-mounted device
  • X represents any object that interacts with the vehicle-mounted device.
  • the current X mainly includes vehicle-mounted devices, handheld devices, traffic roadside infrastructure and networks.
  • the information modes of V2X interaction include: between vehicle and vehicle (Vehicle to Vehicle, V2V), vehicle to road (Vehicle to Infrastructure, V2I), vehicle to person (Vehicle to Pedestrian, V2P), vehicle and network Interaction between Vehicle to Network (V2N).
  • the communication scenario of direct communication between directly connected communication devices may also be a device-to-device (D2D) communication scenario.
  • the direct communication device for direct communication in the embodiments of the present disclosure may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to wireless modems, as well as various forms of users.
  • Equipment User Equipment, UE
  • Mobile Station Mobile Station, MS
  • Terminal Terminal
  • Terminal Equipment Terminal Equipment
  • the protocol stack of the Sidelink communication mode is shown in Figure 2, which includes the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, the MAC layer, and the physical layer (Physical, PHY). Among them, the interface between the terminal and the terminal is PC-5.
  • the transmission of Sidelink realizes the addressing through the source identification and target identification of the MAC layer, and no connection is required before transmission.
  • DRB data radio bearer
  • the structure of the MAC SL-SCH subheader is shown in Figure 3, where the source (source, SRC) is the layer 2 identifier of the source terminal, and the destination (destination, DST) is the layer 2 identifier of the destination terminal.
  • the layer 2 identifier is generated by the application layer and provided to the access layer (Access Stratum, AS) to identify a Sidelink terminal.
  • Each MAC PDU can only be sent to one destination terminal, and each Medium Access Control Protocol Data Unit (MAC PDU) contains only one Sidelink shared channel (Sidelink shared channel, SL-SCH) MAC subheader ,
  • MAC PDU Medium Access Control Protocol Data Unit
  • SL-SCH Sidelink shared channel
  • the MAC header includes a MAC subheader
  • the MAC payload includes a MAC service data unit (SDU) and padding.
  • SRB Sidelink signaling radio bearer
  • LCH Logical Channel
  • Each logical channel has a priority for logical channel scheduling. This priority is configured by the network device.
  • the network device configures the terminal in the connected state through dedicated signaling, and configures the terminal in the idle state through broadcast.
  • the network device configures the priority for the logical channel according to the quality of service (QoS) of the data carried by the logical channel.
  • QoS quality of service
  • the terminal When the terminal receives a Sidelink grant resource (Sidelink grant), the terminal selects the data to be sent through the following logical channel priority selection method (Logical Channel Prioritization, LCP): First, select the logical channel with the highest priority. The data to be sent in the channel is put into the MAC PDU. Then, among other logical channels of the destination terminal to which the selected logical channel belongs, the logical channel with the highest priority is selected, and the data to be sent in this logical channel is put into the MAC PDU. Repeatedly put the data to be sent in this logical channel into the MAC PDU, until all the data to be sent in the logical channel of the destination terminal are put into the MAC PDU, or the Sidelink grant cannot put more data. Submit the MAC PDU to the physical layer for transmission.
  • LCP Logical Channel Prioritization
  • the terminal uses the token bucket algorithm to select logical channel data and put it into the MAC PDU.
  • the network device will configure the following parameters for each logical channel: logical channel priority (logical channel priority), priority transmission rate (prioritized bit rate, unit is bit/s), token bucket maximum capacity (bucket size duration, unit is s) ).
  • the terminal maintains a bucket capacity (Bj, unit is bit) for each logical channel, and the service priority is initially 0.
  • the service priority of each logical channel increases by "priority transmission rate * duration of transmission permission resource", and the service priority of each logical channel cannot exceed "priority transmission rate * token bucket capacity” .
  • the terminal uses the following logical channel priority selection method (Logical Channel Prioritization, LCP) to choose to send data: In all logical channels with bucket capacity> 0, follow the logical channel From high priority to low priority, the bucket capacity size data in each logical channel is put into the MAC PDU. Subtract the size of the data in the MAC PDU from the same capacity of the logical channel. If after completing the above steps, data can still be sent, the data in each logical channel will be sent to the MAC PDU according to the priority of the logical channel from high to low, regardless of the bucket capacity.
  • LCP Logical Channel Prioritization
  • the network device can configure DRX parameters for the terminal.
  • the DRX parameters include an inactive timer, a wake-up timer, a period, and a start offset.
  • the terminal can only monitor the PDCCH during the start of the inactivity timer and during the wake-up period, and the terminal can not monitor the PDCCH channel at other times, thereby saving power consumption.
  • DCI Downlink Control Information
  • C-RNTI Cell-Radio Network Temporary Identifier
  • the sending terminal After configuring DRX on Sidelink, for a destination terminal (receiving terminal), the sending terminal needs to send data in the wake-up window of the destination terminal to ensure that the destination terminal receives the data.
  • the wake-up window of the destination terminal is not considered. If the destination terminal is dormant, sending data to the destination terminal will cause data loss. And if in the wake-up window of the destination terminal, the logical channel of the destination terminal does not have the highest priority, it will also cause the wake-up window to be missed, and can only wait until the next wake-up window, resulting in data transmission delay.
  • the embodiments of the present disclosure provide a method for selecting a destination address in Sidelink.
  • the sending terminal selects the purpose of sending data based on the DRX parameters and DRX status of the destination address of the logical channel to which data is to be sent, and the priority of the logical channel. Address, avoid sending data in non-awake windows, and avoid data delay and data loss.
  • Fig. 5 is a flow chart showing a method for selecting a destination address in a direct link according to an exemplary embodiment. As shown in Fig. 5, the method for selecting a destination address in a direct link is used in a terminal, and the terminal may be There are terminals to send data on Sidelink, including the following steps.
  • step S11 the DRX parameters and DRX status of the destination address corresponding to the logical channel are determined.
  • the terminal when the terminal obtains the Sidelink transmission permission, when selecting the destination address for sending data, it is necessary to determine the DRX parameters and DRX status of the destination terminal (the destination address of the logical channel to which the data is to be sent).
  • step S12 based on the DRX parameters, the DRX status, and the priority of the logical channel, a destination address for sending the data to be sent is selected.
  • the terminal locally stores the DRX parameters of each destination address, and based on the DRX parameters, the DRX state of the destination address can be calculated in real time, and the DRX state may include whether it is in an awake state.
  • the destination address can be understood as a terminal or a terminal group.
  • the sending terminal selects the destination address for sending data based on the DRX parameters and DRX status of the destination address of the logical channel to which the data is to be sent, and the priority of the logical channel, which can realize the sending in the wake-up window of the destination terminal.
  • Data avoid sending data in non-wake-up windows, thereby avoiding data delay and data loss.
  • the terminal when the terminal obtains the Sidelink transmission permission, if there are one or more destination addresses corresponding to the logical channels for sending data configured with DRX, and the DRX state is in the awake state, it can be Or multiple logical channels corresponding to the destination address, determine the logical channel with Bj greater than zero, and select the destination address corresponding to the logical channel with the highest logical channel priority among these logical channels with Bj greater than zero, and then set the logical channel of this destination address The data to be sent in is placed in the Sidelink license.
  • the terminal when the terminal obtains the Sidelink transmission permission, if the destination address corresponding to the logical channel of the data to be sent is not configured with DRX parameters, or is configured with DRX parameters and the DRX status is in the awake state, it will Determine the logical channel with Bj greater than zero in the logical channels for sending data, and select the destination address corresponding to the logical channel with the highest logical channel priority among these logical channels with Bj greater than zero, and then set the destination address in the logical channel to be sent The data is placed in the Sidelink license.
  • the embodiment of the present disclosure assumes that the terminal 1 has destination addresses 001, 010, and 011, where 001 and 010 are configured with DRX.
  • the destination address 001 corresponds to the logical channel (LCH1, LCH2)
  • the destination address 010 corresponds to the logical channel (LCH3, LCH4)
  • the destination address 011 corresponds to the logical channel (LCH5, LCH6).
  • the terminal 1 receives the DCI sent by the network device.
  • the DCI indicates the Sidelink transmission permission and at the same time indicates that the Sidelink transmission permission is for the purpose of sending the DRX destination address.
  • the terminal 1 judges that the logical channel that currently has data to be sent and the corresponding Bj are: (LCH1, Bj is 5), (LCH3, Bj is 3), (LCH4, Bj is 6) and (LCH5, Bj is 8), And the destination addresses corresponding to 001 and 010 are in the DRX wake state, then the destination address 010 corresponding to the LCH4 with the largest Bj among the LCH1, LCH3, and LCH4 in the DRX wake state is selected.
  • the data to be sent in each logical channel (LCH3 and LCH4) in the destination address 010 is formed into a MAC PDU according to the LCP rules and placed in the Sidelink transmission permission.
  • the network device in order to achieve priority in sending data in a destination address configured with DRX parameters and in an awake state, and secondly sending data in a destination address that is not configured with DRX parameters, can configure a logical channel priority for the terminal Offset.
  • the priority offset of the logical channel can be configured separately for each logical channel, or can be configured for each destination address. Among them, when the logical channel priority offset is configured for each destination address, all logical channels corresponding to this destination address apply the same priority offset.
  • the terminal When the terminal selects the destination address based on the priority, it can determine the priority offset of the logical channel based on the logical channel or the destination address, and use the sum of the original priority of the logical channel and the priority offset of the logical channel as the final destination address selection. The priority used.
  • the network device can configure different logical channel priority offsets for different logical channels of the terminal based on the sending priority, so as to achieve priority in sending data in the destination address configured with DRX parameters and in the awake state, and then in the future. Configure the destination address of the DRX parameters to send data.
  • the destination address 001 corresponds to the logical channel (LCH1, LCH2)
  • the destination address 010 corresponds to the logical channel (LCH3, LCH4)
  • the destination address 011 corresponds to the logical channel (LCH5, LCH6).
  • the logical channel priority offset (Bj offset) configured by the network device for the terminal is: (001, +4), (LCH5, -1).
  • the terminal 1 receives the DCI sent by the network device, and the DCI indicates the Sidelink transmission permission, and at the same time indicates that the Sidelink transmission permission is for the purpose of sending the DRX destination address.
  • the terminal 1 judges that the current logical channel with data to be sent and the corresponding Bj are: (LCH1, Bj is 5), (LCH2, Bj is 3), (LCH4, Bj is 6) and (LCH5, Bj is 8), And the destination address corresponding to 001 is currently in the DRX wake state, and the destination address corresponding to 010 is currently in the DRX sleep state.
  • the data to be sent in each logical channel corresponding to the destination address can be sent on the designated direct link permitted resource.
  • the designated direct link permitted resource may be determined based on the DCI sent by the network device, or may also be determined based on pre-configuration information (for example, pre-defined by a protocol), or independently selected by the terminal.
  • the terminal when the terminal obtains the Sidelink transmission permission, if the destination address corresponding to one or more logical channels of the data to be sent is configured with DRX parameters and is in a dormant state, it will select the destination address for sending At this time, the destination address configured with DRX parameters and in the dormant state is ignored to avoid sending data in the dormant destination address.
  • the destination address corresponding to the logical channel with the data to be sent is configured with DRX parameters, and whether the DRX state is in the awake state
  • different destination address selection methods are provided, so as to achieve priority when DRX parameters are configured and in the awake state
  • the data is sent in the destination address that is not configured with DRX parameters, and the destination address that is configured with DRX parameters and is in the dormant state is ignored, so as to avoid sending data in the destination address in the dormant state.
  • the embodiments of the present disclosure also provide a device for selecting a destination address in a direct link.
  • the device for selecting a destination address in a direct link includes hardware structures and/or software modules corresponding to each function.
  • the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Those skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the technical solutions of the embodiments of the present disclosure.
  • Fig. 6 is a block diagram showing a device for selecting a destination address in a direct link according to an exemplary embodiment.
  • the device 100 for selecting a destination address in a direct link is applied to a terminal, and includes a determining unit 101 and a selecting unit 102.
  • the determining unit 101 is configured to determine the discontinuous reception DRX parameters and DRX status of the destination address corresponding to the logical channel, where the logical channel is the logical channel on which data is to be sent.
  • the selecting unit 102 is configured to select a destination address for sending data to be sent based on the DRX parameter, the DRX status, and the priority of the logical channel.
  • the selection unit 102 is used to select logic corresponding to one or more destination addresses when the number of destination addresses is one or more, and one or more destination addresses are configured with DRX parameters and the DRX state is in the awake state. Determine the logical channel whose bucket capacity is greater than zero among the channels, and select the destination address corresponding to the logical channel with the highest priority among the logical channels whose bucket capacity is greater than zero.
  • the selecting unit 102 is configured to determine the logical channel with the bucket capacity greater than zero among the logical channels where the data is to be sent when the DRX parameter is not configured at the destination address, or the DRX parameter is configured and the DRX state is in the awake state, Select the destination address corresponding to the logical channel with the highest priority among the logical channels with the bucket capacity greater than zero.
  • the priority is determined based on the sum of the original priority of the logical channel and the priority offset of the logical channel.
  • the priority offset of the logical channel is determined based on the logical channel, or is determined based on the destination address.
  • the direct link destination address selection device 100 further includes a sending unit 103, and the sending unit 103 is further configured to: on the designated direct link permitted resource, send the pending information in each logical channel corresponding to the destination address. send data.
  • the designated direct link permitted resource is determined based on downlink control information, or based on pre-configuration information, or is independently selected by the terminal.
  • the selection unit 102 is further configured to ignore the destination address configured with DRX parameters and in the sleep state when the destination address is configured with DRX parameters and is in the sleep state.
  • Fig. 7 is a block diagram showing a device 200 for selecting a destination address of a direct link according to an exemplary embodiment.
  • the apparatus 200 may be a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.
  • the device 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 208, an audio component 210, an input/output (I/O) interface 212, a sensor component 214, And the communication component 216.
  • the processing component 202 generally controls the overall operations of the device 200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 202 may include one or more processors 220 to execute instructions to complete all or part of the steps of the foregoing method.
  • the processing component 202 may include one or more modules to facilitate the interaction between the processing component 202 and other components.
  • the processing component 202 may include a multimedia module to facilitate the interaction between the multimedia component 208 and the processing component 202.
  • the memory 204 is configured to store various types of data to support the operation of the device 200. Examples of these data include instructions for any application or method operating on the device 200, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 204 can be implemented by any type of volatile or non-volatile 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 component 206 provides power to various components of the device 200.
  • the power component 206 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 200.
  • the multimedia component 208 includes a screen that provides an output interface between the device 200 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 may not only sense the boundary of a touch or slide action, but also detect the duration and pressure related to the touch or slide operation.
  • the multimedia component 208 includes a front camera and/or a rear camera. When the device 200 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 210 is configured to output and/or input audio signals.
  • the audio component 210 includes a microphone (MIC), and when the device 200 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal.
  • the received audio signal can be further stored in the memory 204 or sent via the communication component 216.
  • the audio component 210 further includes a speaker for outputting audio signals.
  • the I/O interface 212 provides an interface between the processing component 202 and a peripheral interface module.
  • the above-mentioned 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 214 includes one or more sensors for providing the device 200 with various aspects of state evaluation.
  • the sensor component 214 can detect the on/off status of the device 200 and the relative positioning of components.
  • the component is the display and the keypad of the device 200.
  • the sensor component 214 can also detect the position change of the device 200 or a component of the device 200. , The presence or absence of contact between the user and the device 200, the orientation or acceleration/deceleration of the device 200, and the temperature change of the device 200.
  • the sensor assembly 214 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact.
  • the sensor component 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 216 is configured to facilitate wired or wireless communication between the apparatus 200 and other devices.
  • the device 200 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof.
  • the communication component 216 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 216 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 200 may be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (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 devices
  • 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 204 including instructions, which may be executed by the processor 220 of the device 200 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.
  • “plurality” refers to two or more, and other quantifiers are similar.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship.
  • the singular forms “a”, “said” and “the” are also intended to include plural forms, unless the context clearly indicates other meanings.
  • first, second, etc. are used to describe various information, but the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, expressions such as “first” and “second” can be used interchangeably.
  • first information may also be referred to as second information
  • second information may also be referred to as first information.

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Abstract

一种直连链路中目的地址选择方法、装置及存储介质。所述直连链路中目的地址选择方法应用于终端，包括：确定逻辑信道对应目的地址的非连续接收DRX参数和DRX状态（S11），其中，所述逻辑信道为有待发送数据的逻辑信道；基于所述DRX参数、所述DRX状态以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址（S12）。通过所述方法能够避免数据延迟和丢失。

Description

直连链路中目的地址选择方法、装置及存储介质 技术领域
本公开涉及通信技术领域，尤其涉及直连链路中目的地址选择方法、装置及存储介质。
背景技术
为了支持终端之间的直接通信，引入了直连链路(Sidelink)通信方式。Sidelink通信方式中，Sidelink的传输通过媒体介入控制(Medium Access Control，MAC)层的源标识和目的标识来实现寻址，在传输之前不需要建立连接。
相关技术中，进行Sidelink通信的终端之间可以建立多个逻辑信道，用于数据传输。当终端收到一个Sidelink发送许可资源(Sidelink grant)后，通过逻辑信道优先级选择方法(Logical Channel Prioritization，LCP)，选择逻辑信道发送数据。
为了节省终端耗电，网络设备可以为终端配置非连续接收(Discontinuous Reception，DRX)，DRX配置包括非激活定时器(inactivity timer)，苏醒定时器(on duration timer)，周期(cycle)以及起始偏移等。终端可以只在非活动定时器启动以及苏醒期间才监听物理下行控制信道(Physical downlink control channel，PDCCH)，其他时间终端可以不监听PDCCH信道，从而节省电量消耗。每当终端在PDCCH上收到携带有自己C-RNTI的DCI时，会启动非活动定时器。终端也会周期性的启动苏醒定时器。
当在Sidelink上配置DRX之后，基于LCP寻找逻辑信道发送数据的方式，经常会出现数据延迟和数据丢失的情况。
发明内容
为克服相关技术中存在的问题，本公开提供一种直连链路中目的地址选择方法、装置及存储介质。
根据本公开实施例的第一方面，提供一种直连链路中目的地址选择方法，应用于终端，包括：
确定逻辑信道对应目的地址的非连续接收DRX参数和DRX状态，其中，所述逻辑信道为有待发送数据的逻辑信道；基于所述DRX参数、所述DRX状态以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址。
一种实施方式中，基于所述DRX参数、所述DRX状态以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址，包括：
若所述目的地址数量为一个或多个，且所述一个或多个目的地址配置有DRX参数且 所述DRX状态为苏醒状态，则在所述一个或多个目的地址对应的逻辑信道中确定桶容量大于零的逻辑信道，在所述桶容量大于零的逻辑信道中选择优先级最高的逻辑信道对应的目的地址。
另一种实施方式中，基于所述DRX参数、所述DRX状态以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址，包括：
若所述目的地址未配置DRX参数，或者配置有DRX参数且所述DRX状态为苏醒状态，则在有待发送数据的逻辑信道中确定桶容量大于零的逻辑信道，在所述桶容量大于零的逻辑信道中选择优先级最高的逻辑信道对应的目的地址。
又一种实施方式中，所述优先级基于逻辑信道原始优先级和逻辑信道优先级偏移之和确定。
又一种实施方式中，所述逻辑信道优先级偏移基于逻辑信道确定，或者基于目的地址确定。
又一种实施方式中，在指定直连链路许可资源上，发送所述目的地址对应的各逻辑信道中的待发送数据。
又一种实施方式中，所述指定直连链路许可资源基于下行控制信息确定，或者基于预配置信息确定，或者由所述终端自主选择。
又一种实施方式中，若所述目的地址配置有DRX参数且处于休眠状态，则忽略配置有DRX参数且处于休眠状态的目的地址。
根据本公开实施例的第二方面，提供一种直连链路中目的地址选择装置，应用于终端，包括：
确定单元，用于确定逻辑信道对应目的地址的非连续接收DRX参数和DRX状态，其中，所述逻辑信道为有待发送数据的逻辑信道；选择单元，用于基于所述DRX参数、所述DRX状态以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址。
一种实施方式中，所述选择单元用于采用如下方式基于所述DRX参数、所述DRX状态以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址：
若所述目的地址数量为一个或多个，且所述一个或多个目的地址配置有DRX参数且所述DRX状态为苏醒状态，则在所述一个或多个目的地址对应的逻辑信道中确定桶容量大于零的逻辑信道，在所述桶容量大于零的逻辑信道中选择优先级最高的逻辑信道对应的目的地址。
另一种实施方式中，所述选择单元采用如下方式基于所述DRX参数、所述DRX状态 以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址：
若所述目的地址未配置DRX参数，或者配置有DRX参数且所述DRX状态为苏醒状态，则在有待发送数据的逻辑信道中确定桶容量大于零的逻辑信道，在所述桶容量大于零的逻辑信道中选择优先级最高的逻辑信道对应的目的地址。
又一种实施方式中，所述优先级基于逻辑信道原始优先级和逻辑信道优先级偏移之和确定。
又一种实施方式中，所述逻辑信道优先级偏移基于逻辑信道确定，或者基于目的地址确定。
又一种实施方式中，直连链路目的地址选择装置还包括发送单元，所述发送单元还用于：在指定直连链路许可资源上，发送所述目的地址对应的各逻辑信道中的待发送数据。
又一种实施方式中，所述指定直连链路许可资源基于下行控制信息确定，或者基于预配置信息确定，或者由所述终端自主选择。
又一种实施方式中，所述选择单元还用于：在所述目的地址配置有DRX参数且处于休眠状态时，忽略配置有DRX参数且处于休眠状态的目的地址。
根据本公开实施例第三方面，提供一种直连链路中目的地址选择装置，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：执行第一方面或者第一方面任意一种实施方式中所述的直连链路中目的地址选择方法。
根据本公开实施例第四方面，提供一种非临时性计算机可读存储介质，当所述存储介质中的指令由移动终端的处理器执行时，使得移动终端能够执行第一方面或者第一方面任意一种实施方式中所述的直连链路中目的地址选择方法。
本公开的实施例提供的技术方案可以包括以下有益效果：基于有待发送数据逻辑信道对应目的地址的DRX参数和DRX状态以及逻辑信道的优先级，选择用于发送待发送数据的目的地址，可以避免在非苏醒窗口发送数据，进而避免出现数据延迟和数据丢失。
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，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
图1是根据示例性实施例示出的一种直连通信系统示意图。
图2是根据示例性实施例示出的一种直连链路协议栈示意图。
图3是根据示例性实施例示出的一种MAC SL-SCH子头的结构图。
图4是根据示例性实施例示出的一种MAC PDU结构示意图。
图5是根据一示例性实施例示出的一种直连链路中目的地址选择方法实施流程图。
图6是根据一示例性实施例示出的一种直连链路中目的地址选择装置的框图。
图7是根据一示例性实施例示出的一种装置的框图。
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公开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、本公开的一些方面相一致的装置和方法的例子。
本公开实施例提供的直连通信方法可应用于图1所示的直连通信系统。参阅图1所示，直连通信设备之间进行直连通信的场景中，网络设备为直连通信设备1配置各种用于数据传输的传输参数。直连通信设备1作为数据发送端，直连通信设备2作为数据接收端，二者进行直接通信。网络设备与直连通信设备之间进行通信的链路为上下行链路，直连通信设备与直连通信设备之间的链路是直连链路(Sidelink)。其中，直连通信设备和其它设备之间的通信可以通过基站以及核心网进行中转，即利用原有蜂窝网络中终端设备和基站之间的上下行链路进行通信，也可以直接通过设备之间的直连链路进行通信。与Uu接口通信相比，Sidelink通信具有时延短，开销小等特点，非常适合用于直连通信设备和地理位置接近的其它周边设备直接的通信。
本公开涉及的直连通信设备之间进行直连通信的场景，例如可以是车辆到其它节点(V2X)的车用无线通信场景等。其中，V代表车载设备，X代表任何与车载设备交互的对象。当前X主要包含车载设备、手持设备、交通路侧基础设施和网络。V2X交互的信息模式包括：车与车之间(Vehicle to Vehicle，V2V)、车与路之间(Vehicle to Infrastructure，V2I)、车与人之间(Vehicle to Pedestrian，V2P)、车与网络之间(Vehicle to Network，V2N)的交互。本公开中，直连通信设备之间直接通信的通信场景也可以是终端到终端(Device to Device，D2D)的通信场景。本公开实施例中进行直接通信的直连通信设备可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，以及各种形式的用户设备(User Equipment，UE)，移动台(Mobile station，MS)，终端(terminal)，终端设备(Terminal Equipment)等等。
4G时代，引入Sidelink通信方式。Sidelink通信方式的协议栈图2所示，包括分组数 据聚合协议(Packet Data Convergence Protocol，PDCP)层，无线链路控制层(Radio Link Control，RLC)、MAC层以及物理层(Physical，PHY)。其中，终端与终端之间的接口为PC-5。Sidelink的传输通过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。Sidelink上只有数据无线承载(data radio bearer，DRB)，用于传输数据，每个DRB与一个逻辑信道相对应。源终端和目的终端之间可以建立多个逻辑信道，用于数据传输。
Sidelink的传输通过MAC SL-SCH子头携带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。MAC SL-SCH子头的结构如图3所示，其中源(source，SRC)为源终端层2标识，目的(destination，DST)为目的终端的层2标识。层2标识由应用层生成，并提供给接入层(Access Stratum，AS)使用，用于标识一个Sidelink终端。
Sidelink上有两种资源分配方式，一种是网络设备动态调度的方式，另一种是终端在网络设备广播的资源池中自主选择的方式。其中动态调度是网络设备根据终端的缓存数据上报，动态给终端分配Sidelink上的发送资源，而自主选择是终端自行在网络设备广播或者预配置的资源池中随机选择发送资源。动态调度方式的资源池和自主选择方式的资源池是分开的，动态调度由网络设备统一分配资源，因此可以通过合理的算法，避免不同终端进行碰撞。
每个MAC PDU只能发送给一个目的终端，每个媒体接入控制协议数据单元(Medium Access Control Packet Data Unit，MAC PDU)只包含一个Sidelink共享信道(Sidelink shared channel，SL-SCH)MAC子头，结构如图4所示。图4中MAC头中包括MAC子头，MAC载荷(payload)中包括有MAC服务数据单元(Service Data Unit，SDU)以及填充(padding)。
5G时代，为了支持增强的V2X的业务，以及支持更高的传输速率和更高的可靠性，需要在Sidelink上建立单播(unicast)连接。为了支持单播连接的建立和管理，引入了Sidelink信令无线承载(signaling radio bearer，SRB)，用于传输用于建立和管理单播连接的控制信令。每个SRB也与一个逻辑信道(Logical Channel，LCH)相对应。
每个逻辑信道都有一个优先级用于逻辑信道调度，这个优先级是由网络设备配置的，网络设备通过专用信令为处于连接态的终端配置，通过广播为处于空闲态的终端配置。网络设备根据逻辑信道承载数据的服务质量(Quality of Service，QoS)为这个逻辑信道配置优先级。
当终端收到一个Sidelink发送许可资源(Sidelink grant)后，终端通过以下逻辑信道优先级选择方法(Logical Channel Prioritization，LCP)，选择发送数据：首先，选择具有最高优先级的逻辑信道，将这个逻辑信道中的待发数据放入MAC PDU中。然后在所选逻辑 信道所属的目的终端的其他逻辑信道中，选择最高优先级的逻辑信道，将这个逻辑信道中的待发数据放入MAC PDU中。重复将这个逻辑信道中的待发数据放入MAC PDU中，直到这个目的终端的所有逻辑信道的待发数据都放入MAC PDU中，或者Sidelink grant已经无法放入更多数据。将MAC PDU递交给物理层发送。
在Uu接口上，终端通过令牌桶算法选择逻辑信道数据放入MAC PDU。网络设备会为每个逻辑信道配置以下参数：逻辑信道优先级(logical channel priority)，优先传输速率(prioritized bit rate，单位为bit/s)，令牌桶最大容量(bucket size duration，单位为s)。终端为每个逻辑信道维护一个桶容量(Bj，单位为bit)，服务优先级初始为0。每当终端获得一个发送许可资源，每个逻辑信道的服务优先级增加“优先传输速率*发送许可资源的时长”，每个逻辑信道的服务优先级不能超过“优先传输速率*令牌桶容量”。
当终端收到一个Sidelink发送许可资源(Sidelink grant)后，终端通过以下逻辑信道优先级选择方法(Logical Channel Prioritization，LCP)，选择发送数据：在所有桶容量>0的逻辑信道中，按照逻辑信道优先级由高到低将每个逻辑信道中的桶容量大小数据放入MAC PDU中。将逻辑信道同容量减去放入MAC PDU中的数据大小。若执行完成上述步骤后，还能够继续发送数据，则按照逻辑信道优先级由高到低将每个逻辑信道中的数据发送入MAC PDU中，不考虑桶容量。
为了节省终端耗电，网络设备可以为终端配置DRX参数，DRX参数包括非激活定时器，苏醒定时器，周期以及起始偏移等。终端可以只在非活动定时器启动以及苏醒期间才监听PDCCH，其他时间终端可以不监听PDCCH信道，从而节省电量消耗。每当终端在PDCCH上收到携带有自己小区无线网络临时标识(Cell-Radio Network Temporary Identifier，C-RNTI)的下行控制信息(Downlink Control Information，DCI)时，会启动非活动定时器。终端也会周期性的启动苏醒定时器。
当在Sidelink上配置DRX之后，对于某个目的终端(接收终端)而言，发送终端需在目的终端的苏醒窗口发送数据才能保证目的终端接收到数据。然而目前基于LCP选择逻辑信道目的地址的方式中，并不考虑目的终端的苏醒窗口，则在目的终端处于休眠时，如果向目的终端发送数据，会导致数据丢失。并且如果在目的终端的苏醒窗口中，目的终端的逻辑信道没有最高优先级，也会导致错过苏醒窗口，只能等到下一个苏醒窗口，导致数据发送延迟。
有鉴于此，本公开实施例提供一种Sidelink中目的地址选择方法，发送终端基于有待发送数据的逻辑信道的目的地址的DRX参数和DRX状态，以及逻辑信道的优先级选择用 于发送数据的目的地址，避免在非苏醒窗口发送数据，进而避免出现数据延迟和数据丢失。
图5是根据一示例性实施例示出的一种直连链路中目的地址选择方法的流程图，如图5所示，直连链路中目的地址选择方法用于终端中，该终端可以是Sidelink上有待发送数据的终端，包括以下步骤。
在步骤S11中，确定逻辑信道对应目的地址的DRX参数和DRX状态。
其中，本公开实施例中在终端获得Sidelink发送许可时，在选择发送数据的目的地址时，需要确定目的终端(有待发送数据的逻辑信道的目的地址)的DRX参数和DRX状态。
在步骤S12中，基于DRX参数、DRX状态以及逻辑信道的优先级，选择用于发送待发送数据的目的地址。
本公开实施例中，终端本地存储每个目的地址的DRX参数，基于DRX参数可以实时计算目的地址的DRX状态，该DRX状态可以包括是否处于苏醒状态。其中，目的地址可以理解为是一个终端或者一个终端组。
本公开实施例中，发送终端基于有待发送数据的逻辑信道的目的地址的DRX参数和DRX状态，以及逻辑信道的优先级选择用于发送数据的目的地址，可以实现在目的终端的苏醒窗口内发送数据，避免在非苏醒窗口发送数据，进而避免出现数据延迟和数据丢失。
本公开实施例以下将结合实际应用对上述实施例涉及的Sidelink中目的地址选择方法进行说明。
本公开实施例一种实施方式中，当终端获得Sidelink发送许可时，如果有一个或多个有待发送数据的逻辑信道对应的目的地址配置有DRX，并且DRX状态为处于苏醒状态，则可在一个或多个目的地址对应的逻辑信道中确定Bj大于零的逻辑信道，并在这些Bj大于零的逻辑信道中选择逻辑信道优先级最高的逻辑信道对应的目的地址，然后将这个目的地址的逻辑信道中的待发数据放入Sidelink许可中。
本公开实施例另一种实施方式中，当终端获得Sidelink发送许可时，如果有待发送数据的逻辑信道对应的目的地址未配置DRX参数，或者配置有DRX参数且DRX状态为苏醒状态，则在有待发送数据的逻辑信道中确定Bj大于零的逻辑信道，并在这些Bj大于零的逻辑信道中选择逻辑信道优先级最高的逻辑信道对应的目的地址，然后将这个目的地址的逻辑信道中的待发数据放入Sidelink许可中。
一示例中，本公开实施例假设终端1具有目的地址001,010,011，其中001和010配置了DRX。其中，目的地址001与逻辑信道(LCH1，LCH2)相对应，目的地址010与逻辑信道(LCH3，LCH4)相对应，目的地址011与逻辑信道(LCH5，LCH6)相对应。终端 1收到网络设备发送的DCI，DCI中指示了Sidelink发送许可，同时指示这个Sidelink发送许可是为DRX目的地址发送用途。终端1判断当前具有待发数据的逻辑信道和对应的Bj分别为：(LCH1，Bj为5)，(LCH3，Bj为3)，(LCH4，Bj为6)和(LCH5，Bj为8)，并且001和010对应的目的地址处于DRX苏醒状态，则在处于DRX苏醒状态的LCH1、LCH3和LCH4中选择Bj最大的LCH4对应的目的地址010。将目的地址010中各逻辑信道(LCH3和LCH4)的待发数据按照LCP规则形成MAC PDU放入Sidelink发送许可中。
进一步的，本公开实施例中为实现优先在配置有DRX参数且处于苏醒状态的目的地址中发送数据，其次在未配置DRX参数的目的地址中发送数据，网络设备可以为终端配置逻辑信道优先级偏移。其中，逻辑信道优先级偏移可以是为每个逻辑信道单独配置，也可以为每个目的地址配置。其中，当逻辑信道优先级偏移是为每个目的地址配置时，这个目的地址对应的所有逻辑信道都应用相同的优先级偏移。终端基于优先级进行目的地址选择时，可以基于逻辑信道确定或者基于目的地址确定逻辑信道优先级偏移，并将逻辑信道原始优先级和逻辑信道优先级偏移之和作为最终进行目的地址选择时所用的优先级。
可以理解的是，网络设备可以基于发送优先级为终端的不同逻辑信道配置不同的逻辑信道优先级偏移，以实现优先在配置有DRX参数且处于苏醒状态的目的地址中发送数据，其次在未配置DRX参数的目的地址中发送数据。一示例中，假设终端1具有目的地址001,010,011，其中001和010配置了DRX。其中，目的地址001与逻辑信道(LCH1，LCH2)相对应，目的地址010与逻辑信道(LCH3，LCH4)相对应，目的地址011与逻辑信道(LCH5，LCH6)相对应。网络设备为终端配置的逻辑信道优先级偏移(Bj偏移)为：(001，+4)，(LCH5，-1)。终端1收到网络设备发送的DCI，DCI中指示了Sidelink发送许可，同时指示这个Sidelink发送许可是为DRX目的地址发送用途。终端1判断当前具有待发数据的逻辑信道和对应的Bj分别为：(LCH1，Bj为5)，(LCH2，Bj为3)，(LCH4，Bj为6)和(LCH5，Bj为8)，并且001对应的目的地址目前处于DRX苏醒状态，010对应的目的地址目前处于DRX休眠状态。根据逻辑信道优先级偏移分别更新LCH1，LCH2和LCH5的Bj分别为5+4＝9，3+4＝7和8-1＝7，选择更新后Bj最大的LCH1对应的目的地址001，将LCH1和LCH2的待发数据按照LCP规则形成MAC PDU放入Sidelink发送许可中。
进一步的，本公开实施例中，选择了目的地址后，可以在指定直连链路许可资源上，发送目的地址对应的各逻辑信道中的待发送数据。其中，指定直连链路许可资源可以基于网络设备发送的DCI确定，或者也可以基于预配置信息确定(例如通过协议预先规定)，或者由终端自主选择。
本公开实施例一种实施方式中，当终端获得Sidelink发送许可时，如果有一个或多个待发数据的逻辑信道对应的目的地址配置了DRX参数，并且处于休眠状态，则在选择发送目的地址时，忽略配置有DRX参数且处于休眠状态的目的地址，以避免在休眠状态的目的地址中发送数据。
本公开实施例中基于有待发送数据的逻辑信道对应的目的地址是否配置有DRX参数，以及DRX状态是否处于苏醒状态，提供不同的目的地址选择方式，以实现优先在配置有DRX参数且处于苏醒状态的目的地址中发送数据，其次在未配置DRX参数的目的地址中发送数据，并且忽略配置有DRX参数且处于休眠状态的目的地址，以避免在休眠状态的目的地址中发送数据。通过本公开可以避免数据延迟和数据丢失。
基于相同的构思，本公开实施例还提供一种直连链路中目的地址选择装置。
可以理解的是，本公开实施例提供的直连链路中目的地址选择装置为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。结合本公开实施例中所公开的各示例的单元及算法步骤，本公开实施例能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同的方法来实现所描述的功能，但是这种实现不应认为超出本公开实施例的技术方案的范围。
图6是根据一示例性实施例示出的一种直连链路中目的地址选择装置框图。参照图6，直连链路中目的地址选择装置100应用于终端，包括确定单元101和选择单元102。其中，确定单元101，用于确定逻辑信道对应目的地址的非连续接收DRX参数和DRX状态，其中，逻辑信道为有待发送数据的逻辑信道。选择单元102，用于基于DRX参数、DRX状态以及逻辑信道的优先级，选择用于发送待发送数据的目的地址。
一种实施方式中，选择单元102用于在目的地址数量为一个或多个，且一个或多个目的地址配置有DRX参数且DRX状态为苏醒状态时，在一个或多个目的地址对应的逻辑信道中确定桶容量大于零的逻辑信道，在桶容量大于零的逻辑信道中选择优先级最高的逻辑信道对应的目的地址。
另一种实施方式中，选择单元102用于在目的地址未配置DRX参数，或者配置有DRX参数且DRX状态为苏醒状态时，在有待发送数据的逻辑信道中确定桶容量大于零的逻辑信道，在桶容量大于零的逻辑信道中选择优先级最高的逻辑信道对应的目的地址。
又一种实施方式中，优先级基于逻辑信道原始优先级和逻辑信道优先级偏移之和确定。
又一种实施方式中，逻辑信道优先级偏移基于逻辑信道确定，或者基于目的地址确定。
又一种实施方式中，直连链路目的地址选择装置100还包括发送单元103，发送单元103还用于：在指定直连链路许可资源上，发送目的地址对应的各逻辑信道中的待发送数据。
又一种实施方式中，指定直连链路许可资源基于下行控制信息确定，或者基于预配置信息确定，或者由终端自主选择。
又一种实施方式中，选择单元102还用于在目的地址配置有DRX参数且处于休眠状态时，忽略配置有DRX参数且处于休眠状态的目的地址。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
图7是根据一示例性实施例示出的一种用于直连链路目的地址选择的装置200的框图。例如，装置200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。
参照图7，装置200可以包括以下一个或多个组件：处理组件202，存储器204，电力组件206，多媒体组件208，音频组件210，输入/输出(I/O)的接口212，传感器组件214，以及通信组件216。
处理组件202通常控制装置200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。处理组件202可以包括一个或多个处理器220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202可以包括一个或多个模块，便于处理组件202和其他组件之间的交互。例如，处理组件202可以包括多媒体模块，以方便多媒体组件208和处理组件202之间的交互。
存储器204被配置为存储各种类型的数据以支持在设备200的操作。这些数据的示例包括用于在装置200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204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。
电力组件206为装置200的各种组件提供电力。电力组件206可以包括电源管理系统，一个或多个电源，及其他与为装置200生成、管理和分配电力相关联的组件。
多媒体组件208包括在所述装置200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。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述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208包括一个前置摄像头和/或后置摄像头。当设备200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210被配置为输出和/或输入音频信号。例如，音频组件210包括一个麦克风(MIC)，当装置200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204或经由通信组件216发送。在一些实施例中，音频组件210还包括一个扬声器，用于输出音频信号。
I/O接口212为处理组件202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214包括一个或多个传感器，用于为装置200提供各个方面的状态评估。例如，传感器组件214可以检测到设备200的打开/关闭状态，组件的相对定位，例如所述组件为装置200的显示器和小键盘，传感器组件214还可以检测装置200或装置200一个组件的位置改变，用户与装置200接触的存在或不存在，装置200方位或加速/减速和装置200的温度变化。传感器组件214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214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214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216被配置为便于装置200和其他设备之间有线或无线方式的通信。装置200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，通信组件216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，所述通信组件216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200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204，上述指令可由装置200的处理器220执行以完成上述方法。例如，所述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。
可以理解的是，本公开中“多个”是指两个或两个以上，其它量词与之类似。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
进一步可以理解的是，术语“第一”、“第二”等用于描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开，并不表示特定的顺序或者重要程度。实际上，“第一”、“第二”等表述完全可以互换使用。例如，在不脱离本公开范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。
进一步可以理解的是，本公开实施例中尽管在附图中以特定的顺序描述操作，但是不应将其理解为要求按照所示的特定顺序或是串行顺序来执行这些操作，或是要求执行全部所示的操作以得到期望的结果。在特定环境中，多任务和并行处理可能是有利的。
本领域技术人员在考虑说明书及实践这里公开的发明后，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 (18)

  1. 一种直连链路中目的地址选择方法，其特征在于，应用于终端，包括：
    确定逻辑信道对应目的地址的非连续接收DRX参数和DRX状态，其中，所述逻辑信道为有待发送数据的逻辑信道；
    基于所述DRX参数、所述DRX状态以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址。
  2. 根据权利要求1所述的直连链路中目的地址选择方法，其特征在于，基于所述DRX参数、所述DRX状态以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址，包括：
    若所述目的地址数量为一个或多个，且所述一个或多个目的地址配置有DRX参数且所述DRX状态为苏醒状态，则
    在所述一个或多个目的地址对应的逻辑信道中确定桶容量大于零的逻辑信道，在所述桶容量大于零的逻辑信道中选择优先级最高的逻辑信道对应的目的地址。
  3. 根据权利要求1所述的直连链路中目的地址选择方法，其特征在于，基于所述DRX参数、所述DRX状态以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址，包括：
    若所述目的地址未配置DRX参数，或者配置有DRX参数且所述DRX状态为苏醒状态，则
    在有待发送数据的逻辑信道中确定桶容量大于零的逻辑信道，在所述桶容量大于零的逻辑信道中选择优先级最高的逻辑信道对应的目的地址。
  4. 根据权利要求3所述的直连链路中目的地址选择方法，其特征在于，所述优先级基于逻辑信道原始优先级和逻辑信道优先级偏移之和确定。
  5. 根据权利要求4所述的直连链路中目的地址选择方法，其特征在于，所述逻辑信道优先级偏移基于逻辑信道确定，或者基于目的地址确定。
  6. 根据权利要求1至5中任意一项所述的直连链路中目的地址选择方法，其特征在于，所述方法还包括：
    在指定直连链路许可资源上，发送所述目的地址对应的各逻辑信道中的待发送数据。
  7. 根据权利要求6所述的直连链路目的地址选择方法，其特征在于，所述指定直连链路许可资源基于下行控制信息确定，或者基于预配置信息确定，或者由所述终端自主选择。
  8. 根据权利要求1所述的直连链路中目的地址选择方法，其特征在于，所述方法还包括：
    若所述目的地址配置有DRX参数且处于休眠状态，则忽略配置有DRX参数且处于休眠状态的目的地址。
  9. 一种直连链路中目的地址选择装置，其特征在于，应用于终端，包括：
    确定单元，用于确定逻辑信道对应目的地址的非连续接收DRX参数和DRX状态，其中，所述逻辑信道为有待发送数据的逻辑信道；
    选择单元，用于基于所述DRX参数、所述DRX状态以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址。
  10. 根据权利要求9所述的直连链路中目的地址选择装置，其特征在于，所述选择单元用于采用如下方式基于所述DRX参数、所述DRX状态以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址：
    若所述目的地址数量为一个或多个，且所述一个或多个目的地址配置有DRX参数且所述DRX状态为苏醒状态，则
    在所述一个或多个目的地址对应的逻辑信道中确定桶容量大于零的逻辑信道，在所述桶容量大于零的逻辑信道中选择优先级最高的逻辑信道对应的目的地址。
  11. 根据权利要求9所述的直连链路中目的地址选择装置，其特征在于，所述选择单元采用如下方式基于所述DRX参数、所述DRX状态以及所述逻辑信道的优先级，选择用于发送所述待发送数据的目的地址：
    若所述目的地址未配置DRX参数，或者配置有DRX参数且所述DRX状态为苏醒状态，则
    在有待发送数据的逻辑信道中确定桶容量大于零的逻辑信道，在所述桶容量大于零的逻辑信道中选择优先级最高的逻辑信道对应的目的地址。
  12. 根据权利要求11所述的直连链路中目的地址选择装置，其特征在于，所述优先级基于逻辑信道原始优先级和逻辑信道优先级偏移之和确定。
  13. 根据权利要求12所述的直连链路中目的地址选择装置，其特征在于，所述逻辑信道优先级偏移基于逻辑信道确定，或者基于目的地址确定。
  14. 根据权利要求9至13中任意一项所述的直连链路中目的地址选择装置，其特征在于，所述装置还包括发送单元，所述发送单元还用于：
    在指定直连链路许可资源上，发送所述目的地址对应的各逻辑信道中的待发送数据。
  15. 根据权利要求14所述的直连链路目的地址选择装置，其特征在于，所述指定直连链路许可资源基于下行控制信息确定，或者基于预配置信息确定，或者由所述终端自主选择。
  16. 根据权利要求9所述的直连链路中目的地址选择装置，其特征在于，所述选择单元还用于：
    若所述目的地址配置有DRX参数且处于休眠状态，则忽略配置有DRX参数且处于休眠状态的目的地址。
  17. 一种直连链路中目的地址选择装置，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：执行权利要求1至8中任意一项所述的直连链路中目的地址选择方法。
  18. 一种非临时性计算机可读存储介质，当所述存储介质中的指令由移动终端的处理器执行时，使得移动终端能够执行权利要求1至8中任意一项所述的直连链路中目的地址选择方法。
PCT/CN2020/079041 2020-03-12 2020-03-12 直连链路中目的地址选择方法、装置及存储介质 WO2021179263A1 (zh)

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