WO2018201784A1 - 资源配置和调度方法、基站以及用户设备 - Google Patents

资源配置和调度方法、基站以及用户设备 Download PDF

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Publication number
WO2018201784A1
WO2018201784A1 PCT/CN2018/077827 CN2018077827W WO2018201784A1 WO 2018201784 A1 WO2018201784 A1 WO 2018201784A1 CN 2018077827 W CN2018077827 W CN 2018077827W WO 2018201784 A1 WO2018201784 A1 WO 2018201784A1
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Prior art keywords
resource
type
base station
link transmission
sub
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PCT/CN2018/077827
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English (en)
French (fr)
Inventor
王欢
赵群
侯晓林
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株式会社Ntt都科摩
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Priority to US16/609,566 priority Critical patent/US20200068609A1/en
Priority to CN201880024347.6A priority patent/CN110651515A/zh
Publication of WO2018201784A1 publication Critical patent/WO2018201784A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

Definitions

  • the present invention relates to the field of wireless communications, and in particular to a resource configuration and scheduling method, a base station, and a user equipment that can be used in a wireless communication system.
  • D2D communications has become an important technology used in 4G and 5G communication systems.
  • a PC5 interface is also proposed in the communication system.
  • the PC5 interface can have multiple modes depending on the application scenario. For example, mode 3 (mode 3) for the first type of UE in range, and mode 2 (mode 4) for the second type of UE in range and UE in range.
  • mode 3 mode 3
  • mode 2 mode 4
  • the first type of UE performs sub-link transmission by base station scheduling
  • the second type of UE performs a sub-link transmission autonomously.
  • the base station may separately configure a corresponding resource pool for mode 3 and mode 4 of the PC5 interface, so that the first type UE and the second type UE respectively perform sub-link transmission.
  • the mode 3 resource pool (first resource pool) may be configured for mode 3
  • the mode 4 resource pool (second resource pool) may be configured for mode 4.
  • the first resource pool and the second resource pool may have a part of shared resources.
  • the base station may schedule the first type UE dynamic of mode 3. This part of the shared resource is used for sub-link transmission.
  • the base station since the base station is not able to know the resource occupation status when the second type of UE autonomously performs the secondary link transmission, when the base station allocates the part of the shared resource to the first type of UE, it may be occupied by the second type of UE.
  • the resources collide, which reduces the efficiency of information transmission and affects the user experience.
  • a resource configuration method is provided, where the method is performed by a base station, including: configuring a first resource pool, where the first resource pool is used by a first type of UE in a secondary link transmission mode. Information transmission, wherein the first type of UE performs sub-link transmission by base station scheduling; configuring a second resource pool, where the second resource pool is used for information transmission of a second type of UE in a sub-link transmission mode, where The second type of UE autonomously performs sub-link transmission, and the first resource pool and the second resource pool are orthogonal to each other.
  • a resource scheduling method is provided, the method being performed by a base station, comprising: allocating a plurality of candidate resources for a secondary link transmission to a first type of UE, wherein the first type of UE Performing sub-link transmission by base station scheduling; transmitting scheduling information about the plurality of candidate resources to the first type of UE.
  • a resource scheduling method is provided, which is performed by a first type of UE, wherein the first type of UE performs sub-link transmission by base station scheduling, and the method includes: receiving, by the base station, Multiple candidate resources transmitted by the secondary link; utilizing one of the plurality of candidate resources for secondary link transmission.
  • a resource scheduling method is provided, which is performed by a first type of UE, wherein the first type of UE performs sub-link transmission by base station scheduling, and the method includes: receiving, by the base station, a first resource transmitted by the sub-link; determining whether the first resource collides with a second resource used by the second type of UE for sub-link transmission, wherein the second type of UE autonomously performs sub-link transmission; When the first resource collides with the second resource, the collision indication information is sent.
  • a resource scheduling method is provided, which is performed by a first type of UE, wherein the first type of UE performs sub-link transmission by base station scheduling, and the method includes: receiving, by the base station, a first resource transmitted by the sub-link; determining whether the first resource collides with a second resource used by the second type of UE for sub-link transmission, wherein the second type of UE autonomously performs sub-link transmission; When the first resource collides with the second resource, the first type of UE autonomously selects a third resource that is different from the second resource to perform sub-link transmission.
  • a resource scheduling method performed by a second type of UE, wherein the second type of UE autonomously performs a secondary link transmission, the method comprising: receiving a collision sent by a first type of UE Instructing information, wherein the first type of UE performs sub-link transmission by using a first resource by using a base station, where the collision indication information indicates that the first resource is used by the second type of UE for sub-link transmission.
  • a base station including: a first configuration unit, configured to configure a first resource pool, where the first resource pool is used for information of a first type of UE in a secondary link transmission mode Transmission, wherein the first type of UE performs sub-link transmission by base station scheduling; a second configuration unit is configured to configure a second resource pool, and the second resource pool is used for a second type of UE in a sub-link transmission mode Information transmission, wherein the second type of UE autonomously performs sub-link transmission, and the first resource pool and the second resource pool are orthogonal to each other.
  • a base station comprising: an allocating unit configured to allocate, to a first type of UE, a plurality of candidate resources for sub-link transmission, wherein the first type of UE is scheduled by a base station a secondary link transmission; the sending unit, configured to send scheduling information about the multiple candidate resources to the first type of UE.
  • a user equipment where the user equipment is a first type of UE, and the first type of UE performs sub-link transmission by using a base station scheduling, and includes: a receiving unit configured to receive a base station allocation a plurality of candidate resources for sub-link transmission; a transmission unit configured to perform sub-link transmission using one of the plurality of candidate resources.
  • a user equipment configured to perform sub-link transmission by using a base station scheduling, and includes: a receiving unit configured to receive a base station allocation a first resource for sub-link transmission; a determining unit configured to determine whether the first resource collides with a second resource used by the second type of UE for sub-link transmission, wherein the second type of UE The sub-link transmission is performed autonomously; the sending unit is configured to send the collision indication information when the first resource collides with the second resource.
  • a user equipment configured to perform sub-link transmission by using a base station scheduling, and includes: a receiving unit configured to receive a base station allocation a first resource for sub-link transmission; a determining unit configured to determine whether the first resource collides with a second resource used by the second type of UE for sub-link transmission, wherein the second type of UE Performing a secondary link transmission autonomously; the selecting unit is configured to, when the first resource collides with the second resource, independently select a third resource different from the second resource to perform sub-link transmission.
  • a user equipment configured to performs sub-link transmission, and includes: a receiving unit configured to receive the first type of UE The collision indication information that is sent, wherein the first type of UE performs sub-link transmission by using the first resource by the base station, and the collision indication information indicates that the first resource and the second type of UE perform sub-link transmission
  • the second resource used collides; the selection unit is configured to reselect the resources for the secondary link transmission.
  • the first type UE and the autonomous sub-chain that perform sub-link transmission by the base station scheduling can be effectively avoided by means of collision avoidance or post-collision processing.
  • the resource collision between the second types of UEs transmitted by the road improves the efficiency of information transmission and improves the user experience.
  • FIG. 1 shows a flow chart of a resource configuration method according to an embodiment of the present invention
  • FIG. 2 shows a flow chart of a resource scheduling method according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram showing a manner of transmitting base station scheduling information according to an embodiment of the present invention, wherein FIG. 3(a) shows a schematic diagram of DCI transmission of a secondary link scheduling timing (timeline) of multiplexing R-14, FIG. 3(b) ) shows a DCI transmission diagram when the delay between the candidate resource and the DCI indicating the candidate resource is a fixed value, and FIG. 3(c) shows that the delay between the candidate resource and the DCI indicating the candidate resource is Schematic diagram of DCI transmission when dynamically adjusting values;
  • FIG. 4 shows a flow chart of a resource scheduling method according to an embodiment of the present invention
  • FIG. 5 shows a flowchart of a resource scheduling method according to an embodiment of the present invention
  • FIG. 6 shows a flowchart of a resource scheduling method according to an embodiment of the present invention
  • FIG. 7 shows a flowchart of a resource scheduling method according to an embodiment of the present invention
  • FIG. 8 shows a flowchart of a resource scheduling method according to an embodiment of the present invention
  • Figure 9 shows a block diagram of a base station in accordance with one embodiment of the present invention.
  • Figure 10 shows a block diagram of a base station in accordance with one embodiment of the present invention.
  • Figure 11 shows a block diagram of a user equipment in accordance with one embodiment of the present invention.
  • Figure 12 shows a block diagram of a user equipment in accordance with one embodiment of the present invention.
  • Figure 13 shows a block diagram of a user equipment in accordance with one embodiment of the present invention.
  • Figure 14 shows a block diagram of a user equipment in accordance with one embodiment of the present invention.
  • FIG. 15 is a diagram showing an example of a hardware configuration of a base station and a user equipment according to an embodiment of the present invention.
  • a resource configuration and scheduling method, a base station, and a user equipment according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
  • the same reference numerals are used to refer to the same elements.
  • the embodiments described herein are illustrative only and are not intended to limit the scope of the invention.
  • the UEs described herein may include various types of user equipment, such as mobile terminals (or mobile stations) or fixed terminals, although for convenience, the UE and user equipment may sometimes be used interchangeably.
  • the first resource pool allocated by the base station to the first type of UE and the second resource pool allocated to the second type of UE may have a part of the shared resource, but the resource allocation and scheduling manner cannot avoid the first type of UE.
  • a case in which a sub-link transmission may collide with a resource currently occupied by the second type of UE, thereby affecting the transmission effect of the sub-link information.
  • FIG. 1 shows a flow diagram of a resource configuration method 100, which is performed by a base station, in accordance with an embodiment of the present invention.
  • a first resource pool is configured, where the first resource pool is used for information transmission of a first type of UE in a secondary link transmission mode, where the first type of UE is scheduled by a base station. Perform sub-link transmission.
  • the secondary link may be equivalent to the terminal directly connected link.
  • the UE of the first type is a UE in the range of the PC5 interface mode 3, and the resources of the sub-link information transmission are scheduled by the base station.
  • the first type of UE may be a UE in a Radio Resource Control (RRC) connected state.
  • RRC Radio Resource Control
  • a second resource pool is configured, where the second resource pool is used for information transmission of a second type of UE in a sub-link transmission mode, wherein the second type of UE autonomously performs sub-link transmission,
  • the first resource pool and the second resource pool are orthogonal to each other.
  • the second type of UE is a UE within the range of PC5 interface mode 4, and the resources of the sub-link information transmission are allocated by the second type UE autonomously.
  • the second type of UE may be a UE in an RRC idle state and/or a UE using a vehicle-to-specific target communication (V2X) dedicated carrier.
  • V2X vehicle-to-specific target communication
  • the first resource pool and the second resource pool configured by the base station are orthogonal to each other, the first resource pool and the second resource pool do not have shared resources, so that the base station allocates to the first type of UE.
  • the resources and the resources selected by the second type of UE do not overlap, thereby avoiding resource collision between the two UEs.
  • step S101 may be performed first, and then step S102 may be performed, and vice versa.
  • step S101 and step S102 can also be performed simultaneously.
  • the base station may configure the specific UE to be the first type UE or the second type UE.
  • the first resource pool and the second resource pool may be configured to be orthogonal to each other, so that the first resource pool and the second resource pool do not have shared resources, thereby avoiding the first Resource collision during sub-link transmission between a type of UE and a second type of UE.
  • FIG. 2 shows a flow diagram of a resource scheduling method 200 in accordance with another embodiment of the present invention, the method being performed by a base station.
  • step S201 a plurality of candidate resources for sub-link transmission are allocated to a first type of UE, wherein the first type of UE performs sub-link transmission by base station scheduling.
  • the base station may allocate multiple candidate resources to one transmission of the first type of UE for one transport block (TB) or Semi-Persistent Scheduling (SPS), and the allocated candidate resources may be selected from the Within the scope of a shared resource between a first resource pool of a type of UE and a second resource pool for a second type of UE.
  • TB transport block
  • SPS Semi-Persistent Scheduling
  • step S202 scheduling information about the plurality of candidate resources is sent to the first type of UE, so that the first type of UE performs sub-link transmission by using one of the multiple candidate resources.
  • the multiple candidate resources allocated by the base station to the first type of UE may be sent by signaling of the physical layer, or may be sent by high layer signaling such as the data link layer or the network layer.
  • scheduling information about the multiple candidate resources may be sent by using multiple downlink control information (DCI), where each DCI indicates one candidate
  • DCI downlink control information
  • the multiple DCIs may be in consecutive multiple time slots.
  • the scheduling information can be transmitted by scrambling a plurality of DCIs having the same car-to-vehicle communication (V2V) SPS-RNTI.
  • V2V car-to-vehicle communication
  • the base station may also transmit DCI with multiple resource allocation fields to schedule multiple candidate resources by using a new DCI design, where each field indicates the location of one candidate resource.
  • FIG. 3 is a schematic diagram of a specific sending manner in which a base station sends scheduling information about the multiple candidate resources by using multiple DCIs in an embodiment of the present invention.
  • FIG. 3(a) shows a schematic diagram of DCI transmission for multiplexing the sub-link scheduling timing of R-14.
  • FDD frequency division duplex
  • TTI downlink nth time slot
  • the DCI scheduling information for the nth slot may schedule resources on the n+4th slot.
  • TDD time division duplex
  • TDD time division duplex
  • TDD time division duplex
  • TDD time division duplex
  • TDD time division duplex
  • a similar mode can also be used for resource scheduling.
  • the base station transmits scheduling information about the plurality of candidate resources through multiple DCIs on one time slot, the first type of UE will decode multiple DCIs in the same time slot.
  • FIG. 3(b) shows a schematic diagram of DCI transmission when the delay between the candidate resource and the DCI indicating the candidate resource is a fixed value.
  • the delay between the downlink control information used to indicate the candidate resource and any one of the candidate resources may be greater than the minimum required value, where the minimum required value may be as mentioned in FIG. 3(a).
  • a fixed time slot value for example 4 time slots.
  • b in the delay b+4 between the candidate resource and the DCI indicating the candidate resource may be pre-configured as a fixed value.
  • FIG. 3(b) shows a schematic diagram of DCI transmission when the delay between the candidate resource and the DCI indicating the candidate resource is a fixed value.
  • the delay between the first scheduled candidate resource (n+4+b) and the last transmitted DCI(n+a) is greater than the processing time of the first type UE, so that the first type of UE can be guaranteed.
  • the resources scheduled by the base station are used for sub-link transmission.
  • both a and b can be configured by the base station.
  • a and b can both be positive integers, b ⁇ a.
  • the DCI scheduling information transmitted on the downlink nth time slot (TTI) will be scheduled on the (n+4)+b time slots. Resources.
  • TTI downlink nth time slot
  • TDD time division duplex
  • a similar mode can also be used for resource scheduling.
  • the first type of UE may start from receiving the DCI of the first scrambled V2V SPS-RNTI, decode all DCIs in the preset value a and obtain multiple allocated by the base station.
  • Candidate resources optionally, the first type of UE may also learn whether a plurality of candidate resources are transmitted by acquiring an additional transmission indicator on the DCI at the time of decoding, and when the transmission indicator indicates that the transmission is completed, the first type of UE will All DCIs are treated as candidate resources allocated by the base station for decoding. For example, a method of adding 1 bit on the DCI may be used as a transmission indicator to indicate whether the candidate resource is transmitted.
  • the 1-bit transmission indicator attached to the DCI is 1, it indicates that the allocated candidate resource is not transmitted; and if the DCI is completed, When the additional 1-bit transmission indicator is 0, it indicates that the allocated candidate resources have been transmitted, and the first type UE can process the scheduling information of all previous DCIs as candidate resources.
  • the indication method of the transmission indicator of the DCI is only an example. In an actual application, any manner may be used to indicate whether the DCI is sent. In this case, the first type of UE can decode multiple DCIs located in different time slots, respectively.
  • FIG. 3(c) shows a schematic diagram of DCI transmission when the delay between the candidate resource and the DCI indicating the candidate resource is a dynamic adjustment value.
  • the delay between the downlink control information used to indicate the candidate resource and any one of the candidate resources may be greater than the minimum required value, where the minimum required value may be as mentioned in FIG. 3(a).
  • a fixed time slot value, for example, 4 time slots, in FIG. 3(c), b in the delay b+4 between the candidate resource and the DCI indicating the candidate resource can be dynamically adjusted.
  • FIG. 3(c) shows a schematic diagram of DCI transmission when the delay between the candidate resource and the DCI indicating the candidate resource is a dynamic adjustment value.
  • a 3(c)
  • the delay between the first scheduled candidate resource and the last transmitted DCI (n+a) may be greater than the processing time of the first type UE, so that the first type UE can receive all the DCIs.
  • the resources scheduled by the base station are used for sub-link transmission.
  • a and b can be configured by the base station.
  • a and b can both be positive integers, b ⁇ a.
  • the DCI scheduling information transmitted on the downlink nth time slot (TTI) will be scheduled on the (n+4)+b time slots. Resources.
  • TTI downlink nth time slot
  • TDD time division duplex
  • a similar mode can also be used for resource scheduling. Since b here is not a fixed value, the size of the value of b configured on each DCI can be notified by additional delay indication information (for example, a delay indicator) on the DCI delivered by the base station. For example, the value of b can be indicated by L bits.
  • the above b-valued delay indication method is merely an example, and in practical applications, any manner may be used to indicate different sizes of b values.
  • the first type of UE may start from receiving the DCI of the first scrambled V2V SPS-RNTI, decode all DCIs in the preset value a and obtain multiple allocated by the base station.
  • Candidate resources optionally, the first type of UE may also learn whether a plurality of candidate resources are transmitted by acquiring an additional transmission indicator on the DCI at the time of decoding, and when the transmission indicator indicates that the transmission is completed, the first type of UE will All DCIs are treated as candidate resources allocated by the base station for decoding. For example, a method of adding 1 bit on the DCI may be used as a transmission indicator to indicate whether the candidate resource is transmitted.
  • the 1-bit transmission indicator attached to the DCI is 1, it indicates that the allocated candidate resource is not transmitted; and if the DCI is completed, When the additional 1-bit transmission indicator is 0, it indicates that the allocated candidate resources have been transmitted, and the first type UE can process the scheduling information of all previous DCIs as candidate resources.
  • the indication method of the transmission indicator of the DCI is only an example. In an actual application, any manner may be used to indicate whether the DCI is sent. In this case, the first type of UE can decode multiple DCIs located in the same or different time slots, respectively.
  • the DCI indication including the scrambled V2V SPS-RNTI may include an indication.
  • This scheduling information can be indicated in a pattern of bit maps or a pattern of time-frequency resource locations.
  • steps S1 and S2 shown in FIG. 4 may be further included to receive the first type.
  • the feedback information of the UE determines the secondary link transmission resource of the first type of UE according to the feedback information.
  • 4 is a flow chart showing a resource scheduling method in another embodiment of the present invention, the method being performed by a base station.
  • step S1 feedback information about the selection of the plurality of candidate resources by the first type UE is received.
  • the feedback information is a resource selected by the first type of UE, or a resource that is not selected by the first type of UE.
  • the first type of UE may feed back the selected or unselected resource information to the base station through physical layer signaling or higher layer signaling.
  • the feedback may be performed on the feedback information location corresponding to the downlink control information of the candidate resource that is selected and/or not selected.
  • the feedback may be performed by acknowledgment/non-acknowledgment (ACK/NACK) signaling at the location of the feedback information corresponding to each DCI.
  • ACK/NACK acknowledgment/non-acknowledgment
  • the representative resource that can be selected by the DCI indication is selected; when the feedback information at the location of the feedback information corresponding to the specific DCI is not acknowledged (NACK) , means that the candidate resources indicated by this DCI are not selected.
  • the first type of UE may also feed back information through high layer signaling.
  • signaling transmission can be performed by multiplexing an uplink scheduling request mechanism.
  • the information feedback may be performed at the same time as the physical uplink shared channel (PUSCH) transmission configured by the base station, where the PUSCH may be configured together with the first type UE when the base station allocates multiple candidate resources for the secondary link transmission. .
  • PUSCH physical uplink shared channel
  • the base station may determine the first type of UE among the multiple candidate resources according to the feedback information of the first type of UE.
  • the resource for the sub-link transmission may be determined, according to the feedback information of the first type of UE, which of the multiple candidate resources are not occupied, so that the unoccupied resources may be scheduled to other first types of UEs.
  • the first type of UE may decide whether to send feedback information to the base station according to the type of information for performing the secondary link transmission.
  • the first type of UE may not send feedback information to the base station, and select autonomously for the sub-link transmission among the multiple candidate resources scheduled by the base station, when the information of the first type of UE is the one-time information. Resources.
  • SPS Semi-Persistent Scheduling
  • the resources allocated in one SPS may be periodically used (ie, may be used multiple times). Therefore, downlink control signaling (DCI) is not required to be sent to the UE in each Transmission Time Interval (TTI), thereby reducing the overhead of control signaling.
  • DCI downlink control signaling
  • the first type UE can transmit feedback information to the base station, and the base station selects resources for performing SPS transmission. Whether the first type UE sends feedback information to the base station may be configured by the base station according to the type of information transmitted by the secondary link.
  • the secondary link transmission resource of the first type of UE is scheduled by the base station, and may be configured according to The feedback information of the first type of UE is finally determined.
  • the first type of UE may also autonomously select resources for sub-link transmission according to multiple candidate resources allocated by the base station to perform sub-link transmission. Specifically, after decoding the obtained multiple candidate resources indicated in the DCI, the first type of UE may perform interception and autonomously select resources with less interference from all candidate resources for sub-link transmission.
  • the first type of UE may select the least interfered resource based on Received Signal Strength Indication (RSSI) measurements.
  • RSSI Received Signal Strength Indication
  • the first type of UE may check the occupied resources in the resource allocation (SA), and perform reference signal received power (RSRP) measurement on the occupied resources, due to the received power in the occupied resources.
  • SA resource allocation
  • RSRP reference signal received power
  • Higher resource representations are occupied by near-field users, so these resources cannot be selected and will be discarded. Therefore, the first type of UE may also discard candidate resources whose received power exceeds the threshold by using a preset threshold.
  • the first type of UE may perform resource reselection and perform secondary link transmission by increasing a threshold.
  • the first type of UE may also randomly select resources for transmission of the secondary link among all resources that are not discarded.
  • the UE of the first type may also select the resource with the smallest measured value of the RSRP for the sub-link transmission according to the measurement result of the RSRP.
  • the selection method of the foregoing candidate resources is only an example. In an actual application, any resource selection manner may be used to select a resource for sub-link transmission.
  • resource collision between the first type UE that performs sub-link transmission by the base station scheduling and the second type UE that performs autonomous sub-link transmission can be effectively avoided, and information transmission is improved.
  • the efficiency has improved the user experience.
  • FIG. 5 is a flowchart of a resource scheduling method 500 according to an embodiment of the present invention.
  • the first type of UE performs sub-link transmission by base station scheduling.
  • step S501 a plurality of candidate resources allocated by the base station for sub-link transmission are received.
  • the base station may allocate multiple candidate resources to the first type of UE for one transport block (TB) or semi-persistent scheduling (SPS), and the allocated candidate resources may be selected from the first type of UE.
  • TB transport block
  • SPS semi-persistent scheduling
  • the base station may send scheduling information about the multiple candidate resources to the first type of UE.
  • the multiple candidate resources allocated by the base station to the first type of UE may be sent by signaling of the physical layer, or may be sent by high layer signaling such as the data link layer or the network layer.
  • the scheduling information about the multiple candidate resources may be sent by using multiple downlink control information (DCI), where each DCI indication Scheduling information of a candidate resource, wherein the plurality of DCIs may be in consecutive multiple time slots.
  • DCI downlink control information
  • the scheduling information may be transmitted by scrambling a plurality of DCIs having the same vehicle-to-vehicle communication (V2V) SPS-RNTI.
  • V2V vehicle-to-vehicle communication
  • the base station may also transmit DCI with multiple resource allocation fields to schedule multiple candidate resources by using a new DCI design, where each field indicates the location of one candidate resource.
  • multiple candidate resources allocated by the base station may also be transmitted through high-level signaling such as a DL data layer or a MAC CE layer.
  • the base station may use the DCI indication of the scrambled V2V SPS-RNTI to include A physical downlink shared channel (PDSCH) indicating sub-link candidate resource scheduling information, so that the first type UE obtains scheduling information of candidate resources by decoding information on the corresponding channel.
  • PDSCH physical downlink shared channel
  • This scheduling information can be indicated in a pattern of bit maps or a pattern of time-frequency resource locations.
  • the first type UE may send feedback information about selection of the multiple candidate resources. Specifically, after the first type of UE decoding obtains multiple candidate resources indicated in the DCI, the device may perform monitoring and select less interference resources from all candidate resources to perform feedback to the base station, so that the base station receives the first type of UE. Feedback information of the selection of the plurality of candidate resources. In one embodiment of the invention, the first type of UE may select the least interfered resource based on Received Signal Strength Indication (RSSI) measurements.
  • RSSI Received Signal Strength Indication
  • the first type of UE may check the occupied resources in the resource allocation (SA), and perform reference signal received power (RSRP) measurement on the occupied resources, due to the received power in the occupied resources.
  • SA resource allocation
  • RSRP reference signal received power
  • the first type of UE may also feed back the discarded candidate resources whose received power exceeds the threshold by the feedback information to the base station by using a preset threshold.
  • the resource may be reselected and fed back to the base station by increasing the threshold.
  • the first type of UE may also randomly select resources for sub-link transmission among all resources that are not discarded, and perform feedback.
  • the selection manner of the foregoing candidate resources is only an example. In an actual application, any resource selection manner may be used to feed back information to the base station.
  • the first type of UE may feed back the selected or unselected resource information to the base station by using physical layer signaling or higher layer signaling.
  • the feedback may be performed on the location of the feedback information corresponding to the downlink control information of the candidate resource that is selected and/or not selected, in particular, each of the UEs may perform feedback through the physical layer signaling.
  • the feedback is confirmed by the acknowledgement/non-acknowledgment signaling at the position of the feedback information corresponding to the DCI.
  • the candidate resource may be selected for the DCI indication; when the feedback information at the location of the feedback information corresponding to the specific DCI is not confirmed, the representative does not select this Candidate resources indicated by the DCI.
  • the first type of UE may also feed back information through high layer signaling.
  • the signaling may be performed by multiplexing the uplink scheduling request mechanism, or may be performed while the physical uplink shared channel (PUSCH) transmission configured by the base station is transmitted.
  • PUSCH physical uplink shared channel
  • the first type of UE may decide whether to send feedback information to the base station according to the type of information for performing the secondary link transmission.
  • the first type of UE may not send feedback information to the base station, and select autonomously for the sub-link transmission among the multiple candidate resources scheduled by the base station, when the information of the first type of UE is the one-time information. Resources.
  • the first type of UE performs Semi-Persistent Scheduling (SPS) transmission
  • the UE may send feedback information to the base station, and the base station selects resources for SPS transmission.
  • SPS Semi-Persistent Scheduling
  • step S502 sub-link transmission is performed using one of the plurality of candidate resources.
  • the base station may determine, according to the feedback information of the first type of UE, the first type of UE to perform the secondary chain among the multiple candidate resources.
  • a resource transmitted by the path such that the first type of UE utilizes one of the plurality of candidate resources for sub-link transmission.
  • the base station may perform resource selection according to the interference size of the resource in the candidate candidate resources that are fed back by the first type of UE, or may randomly perform the remaining resources except the unselectable resources fed back by the first type of UE. Resource selection.
  • the first type of UE may also autonomously select resources for sub-link transmission.
  • the first type of UE may autonomously select a resource for performing sub-link transmission among multiple candidate resources allocated by the base station to perform sub-link transmission. Specifically, after decoding the obtained multiple candidate resources indicated in the DCI, the first type of UE may perform interception and autonomously select resources with less interference from all candidate resources for sub-link transmission. In one embodiment of the invention, the first type of UE may select the least interfered resource based on Received Signal Strength Indication (RSSI) measurements.
  • RSSI Received Signal Strength Indication
  • the first type of UE may check the occupied resources in the resource allocation (SA), and perform reference signal received power (RSRP) measurement on the occupied resources, due to the received power in the occupied resources.
  • SA resource allocation
  • RSRP reference signal received power
  • the first type of UE may also discard candidate resources whose received power exceeds the threshold by using a preset threshold.
  • the first type of UE may perform resource reselection and perform secondary link transmission by increasing a threshold.
  • the first type of UE may also randomly select resources for transmission of the secondary link among all resources that are not discarded.
  • the selection method of the foregoing candidate resources is only an example. In an actual application, any resource selection manner may be used to select a resource for sub-link transmission.
  • resource collision between the first type UE that performs sub-link transmission by the base station scheduling and the second type UE that performs autonomous sub-link transmission can be effectively avoided, and information transmission is improved.
  • the efficiency has improved the user experience.
  • FIG. 6 shows a flow diagram of a resource scheduling method 600 according to another embodiment of the present invention, the method being performed by a first type of UE, wherein the first type of UE performs sub-link transmission by base station scheduling.
  • step S601 the first resource allocated by the base station for sub-link transmission is received.
  • the first resource allocated by the base station to the first type of UE may be from the shared resource of the first resource pool and the second resource pool.
  • step S602 it is determined whether the first resource collides with a second resource used by the second type UE for sub-link transmission, wherein the second type UE autonomously performs sub-link transmission.
  • the first type of UE may determine whether the first resource allocated by the base station is collided by the second resource used by the second type UE by monitoring the shared resource between the first resource pool and the second resource pool, where Whether a type of UE is listening can be configured by the base station, or the first type of UE can always listen by default.
  • the first type of UE may check the first resource in the resource allocation (SA) and perform measurement of reference signal received power (RSRP). When the measured power is greater than a preset threshold, the first allocated by the base station may be considered. A resource is occupied.
  • the first type of UE may further determine whether the first resource is occupied by estimating whether the average RSSI is greater than a preset threshold.
  • the first type of UE may determine whether the average RSSI per 100 ms in the listening window is The preset threshold is exceeded to determine the occupancy of the first resource.
  • the first type of UE may further determine whether the first resource is occupied by considering the measurement of the RSRP and the measurement result of the average RSSI.
  • the first type of UE may perform autonomous resource selection with reference to the second type of UE.
  • the first type of UE may select a resource whose RSRP is less than a preset threshold, measure RSSI on the resources, and perform resources according to the RSSI size. Sort.
  • the first type of UE may select, for example, a preset number or a predetermined percentage of resources with a lower RSSI, and treat these resources as optional resources. Therefore, when the first resource allocated by the base station to the first type of UE and the optional resources are coincident, the first type of UE considers that the first resource allocated by the base station is an available resource; otherwise, when the base station allocates the first When the resource is not within the range of these optional resources, the first type of UE considers that the first resource is already occupied.
  • step S603 when the first resource collides with the second resource, the collision indication information is sent.
  • the first type of UE may send the collision indication information to the base station, so that the base station performs reallocation of resources for performing sub-link transmission on the first type of UE.
  • the first type UE may further send collision indication information to the second type UE, so that the second type UE reselects resources of the secondary link transmission.
  • the first type of UE may feed back the selected or unselected resource information to the base station by using physical layer signaling or higher layer signaling.
  • the feedback may be performed on the location of the feedback information corresponding to the downlink control information of the first resource that is selected and/or not selected, in particular, the first type of UE may perform the feedback through the physical layer signaling.
  • the feedback is confirmed by the acknowledgement/non-acknowledgment signaling at the position of the feedback information corresponding to the DCI.
  • the representative may select the first resource indicated by the DCI; when the feedback information at the location of the feedback information corresponding to the specific DCI is not confirmed, the representative does not select this The first resource indicated by a DCI.
  • the first type of UE may also feed back information through high layer signaling.
  • the signaling may be performed by multiplexing the uplink scheduling request mechanism, or may be performed while the physical uplink shared channel (PUSCH) transmission configured by the base station is transmitted.
  • the content of the collision indication information may include one or more of the following: indicating whether the allocated first resource collides, the RSRP measurement of the SA allocation resource, the RSSI measurement value, the reservation period of the same resource allocated by the SA, according to The first type of UE listens to the resulting recommended resource location and the like.
  • the first type of UE may decide whether to send collision indication information according to the type of information for performing the secondary link transmission.
  • the first type of UE may not send the collision indication information and independently select the resource for the sub-link transmission when the information of the sub-type transmission by the first type of UE is one-time information.
  • the first type of UE may send collision indication information to the base station or the second type of UE, and the base station selects resources for performing SPS transmission or causes the second type of UE to reselect. It performs resources for sub-link transmission.
  • Whether the UE of the first type transmits collision indication information may be configured by the base station according to the type of information transmitted by the secondary link.
  • the first type of UE may also adopt a manner of actively reporting resource occupation to the base station before the collision, so that the base station avoids allocating resources that may collide to the first type UE when the resource is allocated. Thereby avoiding the occurrence of collisions.
  • the first type of UE can actively report the resource occupation to the base station through continuous resource monitoring. The listening of the first type of UE may be pre-configured by the base station.
  • the resource occupancy report sent by the first type of UE to the base station may be reported periodically or aperiodically by the high layer signaling.
  • the first type of UE may periodically report the resource occupation report together with its location information, or may be periodically reported according to the base station. Request to report at any time.
  • the resource occupancy report can also be monitored and reported by a roadside node (RSU).
  • the resource occupation report reported by the first type of UE and/or the RSU may include one or more of the following: RSRP measurement, RSSI measurement value, reservation period of the SA allocation resource, according to the first type UE and/ Or the recommended resource location obtained by the RSU monitoring result.
  • the resource occupation report of the first type of UE and/or RSU includes a specific subset in its listening window or covers all time-frequency resources that it listens to, and the specific range of the report may be It is determined according to the configuration of the base station.
  • the resource occupancy report may be reported together with the foregoing collision indication information, so that the base station reconfigures the first resource used by the first type of UE.
  • resource collision between the first type UE that performs sub-link transmission by the base station scheduling and the second type UE that performs autonomous sub-link transmission can be effectively avoided, and information transmission is improved.
  • the efficiency has improved the user experience.
  • FIG. 7 shows a flowchart of a resource scheduling method 700 according to an embodiment of the present invention, which is performed by a first type of UE, wherein the first type of UE performs sub-link transmission by base station scheduling.
  • step S701 the first resource allocated by the base station for sub-link transmission is received.
  • the first resource allocated by the base station to the first type of UE may be from the shared resource of the first resource pool and the second resource pool.
  • step S702 it is determined whether the first resource collides with a second resource used by the second type UE for sub-link transmission, wherein the second type UE autonomously performs sub-link transmission.
  • the first type of UE may determine whether the first resource allocated by the base station is collided by the second resource used by the second type UE by monitoring the shared resource between the first resource pool and the second resource pool.
  • the first type of UE may check the first resource in the resource allocation (SA) and perform measurement of reference signal received power (RSRP). When the measured power is greater than a preset threshold, the first allocated by the base station may be considered. A resource is occupied.
  • the first type of UE may further determine whether the first resource is occupied by estimating whether the average RSSI is greater than a preset threshold. For example, the first type of UE may determine whether the average RSSI per 100 ms in the listening window is The preset threshold is exceeded to determine the occupancy of the first resource.
  • the first type of UE may further determine whether the first resource is occupied by considering the measurement of the RSRP and the measurement result of the average RSSI.
  • step S703 when the first resource collides with the second resource, the first type UE autonomously selects a third resource different from the second resource to perform sub-link transmission.
  • the first type of UE may autonomously select a resource for performing sub-link transmission for sub-link transmission. Specifically, the first type of UE may perform resource monitoring and autonomously select a less interfered resource from among multiple optional resources for sub-link transmission. In one embodiment of the invention, the first type of UE may select the least interfered resource based on Received Signal Strength Indication (RSSI) measurements. In another embodiment of the present invention, the first type of UE may also check the occupied resources in the resource allocation (SA), and perform measurement of reference signal received power (RSRP) to determine the resources that cannot be selected and discard, and then discard. The resources are randomly selected from all non-discarded resources for sub-link transmission. The selection method of the foregoing candidate resources is only an example. In an actual application, any resource selection manner may be used to select a resource for sub-link transmission. Alternatively, the first type of UE may transmit to the base station its autonomously selected third resource for sub-link transmission.
  • RSSI Received Signal Strength Indication
  • RSRP reference signal received power
  • the first type of UE may use the third resource to perform sub-link transmission for a period of time, and stop using the third resource for sub-link transmission when certain conditions or conditions are met, where
  • the condition may include: when the transmission of one transport block is completed by using the third resource, stopping using the third resource for sub-link transmission; when the autonomous resource reselection of the semi-persistent scheduling SPS is triggered, stopping the use Determining that the third resource performs sub-link transmission; when the preset time or period is met, stopping using the third resource for sub-link transmission; and/or stopping the use when the UE receives the new scheduling resource of the base station again
  • the third resource is used for sub-link transmission.
  • the sub-link transmission may be performed by using the manner of the base station scheduling.
  • the third resource is selected from a second resource pool, and the second resource pool is associated with a first resource pool, where the first resource pool is used in a secondary link transmission mode.
  • Information transmission of the first type of UE, and the second resource pool is used for information transmission of the second type of UE in the sub-link transmission mode.
  • the association between the second resource pool and the first resource pool may be configured by a base station. For example, when there are multiple first resource pools and multiple second resource pools, a certain first resource pool may be associated with one or more second resource pools.
  • each first resource pool is also It can be in one-to-one correspondence with each of the second resource pools.
  • the autonomous selection and the secondary link transmission of the third resource may be performed using parameters of semi-permanent scheduling configured by the base station.
  • the first type of UE may further send a scheduling abandonment report to the base station, where the scheduled abandonment report indicates that the first type of UE abandons the first resource scheduled by the base station.
  • the scheduling abandonment report may send a scheduling abandonment report through low layer or higher layer signaling such as a physical layer, a data link layer, or a network layer.
  • resource collision between the first type UE that performs sub-link transmission by the base station scheduling and the second type UE that performs autonomous sub-link transmission can be effectively avoided, and information transmission is improved.
  • the efficiency has improved the user experience.
  • step S603 when the collision indication information sent by the first type UE is sent to the second type UE, the second type UE may be prompted to perform resource reselection to avoid collision occurrence. Accordingly, a resource scheduling method performed by a second type of UE according to an embodiment of the present invention will be described below with reference to FIG. 8 shows a flow diagram of a resource scheduling method 800 in accordance with an embodiment of the present invention, wherein the second type of UE autonomously performs sub-link transmission.
  • step S801 the collision indication information sent by the first type UE is received, where the first type UE performs sub-link transmission through the first resource by the base station scheduling, and the collision indication information indicates the The first resource collides with the second resource used by the second type of UE for sub-link transmission.
  • the first resource allocated by the base station to the first type of UE may be from the shared resource of the first resource pool and the second resource pool.
  • the first type of UE may determine whether the first resource allocated by the base station is collided by the second resource used by the second type UE by monitoring the shared resource between the first resource pool and the second resource pool.
  • the first type of UE may check the first resource in the resource allocation (SA) and perform measurement of reference signal received power (RSRP). When the measured power is greater than a preset threshold, the first allocated by the base station may be considered. A resource is occupied.
  • the first type of UE may further determine whether the first resource is occupied by estimating whether the average RSSI is greater than a preset threshold.
  • the first type of UE may determine whether the average RSSI per 100 ms in the listening window is The preset threshold is exceeded to determine the occupancy of the first resource.
  • the first type of UE may further determine whether the first resource is occupied by considering the measurement of the RSRP and the measurement result of the average RSSI. When the first resource collides with the second resource, the first type UE will send collision indication information to the second type UE.
  • the collision indication information may be a one-time SA message sent by the first type UE to the second type UE, and the SA message may be before or after the transmission of the first transport block.
  • the SA message may include a signaling identifier, and the signaling identifier may be 1 bit. For example, when the bit is 1, the second type UE may be instructed to perform resource reselection, and when the bit is When the bit is 0, the second type of UE does not need to perform resource reselection.
  • the SA message may also include content in a traditional SA message.
  • the SA message may include one or more of the following: priority, resource reservation, frequency resource allocation (indicating the frequency domain location of the first type of UE resource) ), the time interval between initial transmission and retransmission (indicating the time domain location of the first type of UE resources), MCS, retransmission index, reserved bits.
  • the first type of UE may decide whether to send collision indication information according to the type of information for performing the secondary link transmission. Wherein, when the information of the first type of UE for the sub-link transmission is one-time information, the first type of UE may not send the collision indication information, and independently select the resource for the sub-link transmission. In addition, optionally, when the first type of UE performs SPS transmission, the first type UE may send collision indication information to the second type UE, and cause the second type UE to reselect the resources for which the secondary link transmission is performed. Whether the UE of the first type transmits collision indication information may be configured by the base station according to the type of information transmitted by the secondary link.
  • step S802 the resources transmitted by the secondary link are reselected.
  • the second type of UE may perform autonomous selection in the second resource pool allocated thereto to change the resources for which the secondary link is transmitted.
  • resource collision between the first type UE that performs sub-link transmission by the base station scheduling and the second type UE that performs autonomous sub-link transmission can be effectively avoided, and information transmission is improved.
  • the efficiency has improved the user experience.
  • FIG. 9 is a block diagram showing a base station 900 in accordance with one embodiment of the present invention.
  • the base station 900 includes a first configuration unit 910 and a second configuration unit 920.
  • the base station 900 may include other components in addition to these two units, however, since these components are not related to the content of the embodiment of the present invention, the illustration and description thereof are omitted here.
  • the specific details of the operations described below performed by the base station 900 according to the embodiment of the present invention are the same as those described above with reference to FIG. 1, the repeated description of the same details is omitted herein to avoid repetition.
  • the first configuration unit 910 configures a first resource pool, where the first resource pool is used for information transmission of a first type of UE in a secondary link transmission mode, where the first type of UE is scheduled by a base station.
  • Perform sub-link transmission As described above, the first type of UE is a UE in the range of the PC5 interface mode 3, and the resources of the sub-link information transmission are scheduled by the base station.
  • the first type of UE may be in the radio resource control (RRC). The UE in the connected state.
  • RRC radio resource control
  • the second configuration unit 920 configures a second resource pool, where the second resource pool is used for information transmission of a second type of UE in a secondary link transmission mode, wherein the second type of UE autonomously performs secondary link transmission,
  • the first resource pool and the second resource pool are orthogonal to each other.
  • the second type of UE is a UE in the range of the PC5 interface mode 4, and the resources of the sub-link information transmission are autonomously allocated by the second type of UE.
  • the second type of UE may be in the UEs in the RRC idle state and/or UEs that use the vehicle to a specific target communication (V2X) dedicated carrier.
  • V2X specific target communication
  • the first resource pool and the second resource pool configured by the base station 900 are orthogonal to each other, the first resource pool and the second resource pool do not have shared resources, so that the base station is configured to the first type of UE.
  • the allocated resources and the resources selected by the second type of UE do not overlap, thereby avoiding resource collision between the two UEs.
  • the base station 900 may configure the specific UE to be the first type of UE or the second type of UE.
  • the first resource pool and the second resource pool may be configured to be orthogonal to each other, so that the first resource pool and the second resource pool do not have shared resources, thereby avoiding the first type. Resource collision during transmission of the secondary link between the UE and the second type of UE.
  • FIG. 10 is a block diagram showing a base station 1000 in accordance with one embodiment of the present invention.
  • the base station 1000 includes an allocating unit 1010 and a transmitting unit 1020.
  • the base station 1000 may include other components in addition to these two units, however, since these components are not related to the content of the embodiment of the present invention, the illustration and description thereof are omitted herein.
  • the specific details of the operations described below performed by the base station 1000 according to the embodiment of the present invention are the same as those described above with reference to FIGS. 2-4, repeated description of the same details is omitted herein to avoid redundancy.
  • the allocating unit 1010 allocates a plurality of candidate resources for sub-link transmission to the first type of UE, wherein the first type of UE performs sub-link transmission by base station scheduling.
  • the allocating unit 1010 may allocate multiple candidate resources to one transmission of the first type of UE for one transport block (TB) or semi-persistent scheduling (SPS), and the allocated candidate resources may be selected from the following. Within a range of shared resources between the first resource pool of the first type of UE and the second resource pool of the second type of UE.
  • TB transport block
  • SPS semi-persistent scheduling
  • the sending unit 1020 sends scheduling information about the multiple candidate resources to the first type of UE, so that the first type of UE performs sub-link transmission by using one of the multiple candidate resources.
  • the multiple candidate resources allocated by the sending unit 1020 to the first type of UE may be sent by signaling of the physical layer, or may be sent by high layer signaling such as a data link layer or a network layer.
  • the scheduling information about the multiple candidate resources may be sent by using multiple downlink control information (DCI), where each DCI indication Scheduling information of a candidate resource, wherein the plurality of DCIs may be in consecutive multiple time slots.
  • DCI downlink control information
  • the transmitting unit 1020 may transmit scheduling information by scrambling a plurality of DCIs having the same vehicle-to-vehicle communication (V2V) SPS-RNTI.
  • V2V vehicle-to-vehicle communication
  • the sending unit 1020 may also send a DCI with multiple resource allocation fields to schedule multiple candidate resources by using a new DCI design, where each field indicates the location of one candidate resource.
  • FIG. 3 is a schematic diagram of a specific sending manner in which the sending unit 1020 sends scheduling information about the multiple candidate resources by using multiple DCIs in the embodiment of the present invention.
  • FIG. 3(a) shows a schematic diagram of DCI transmission for multiplexing the sub-link scheduling timing of R-14.
  • FDD frequency division duplex
  • TTI downlink nth time slot
  • the DCI scheduling information for the nth slot may schedule resources on the n+4th slot.
  • TDD time division duplex
  • TDD time division duplex
  • TDD time division duplex
  • a similar mode can also be used for resource scheduling.
  • the base station transmits scheduling information about the plurality of candidate resources through multiple DCIs on one time slot, the first type of UE will decode multiple DCIs in the same time slot.
  • FIG. 3(b) shows a schematic diagram of DCI transmission when the delay between the candidate resource and the DCI indicating the candidate resource is a fixed value.
  • the delay between the downlink control information used to indicate the candidate resource and any one of the candidate resources may be greater than the minimum required value, where the minimum required value may be as mentioned in FIG. 3(a).
  • a fixed time slot value for example 4 time slots.
  • b in the delay b+4 between the candidate resource and the DCI indicating the candidate resource may be pre-configured as a fixed value.
  • FIG. 3(b) shows a schematic diagram of DCI transmission when the delay between the candidate resource and the DCI indicating the candidate resource is a fixed value.
  • a there may also be a preset value a such that scheduling information about the a candidate resources is transmitted through a downlink control information in consecutive a time slots, wherein each downlink control The information is in one of the consecutive a time slots.
  • the delay between the first scheduled candidate resource (n+4+b) and the last transmitted DCI(n+a) is greater than the processing time of the first type UE, so that the first type of UE can be guaranteed.
  • the resources scheduled by the base station are used for sub-link transmission.
  • both a and b can be configured by the base station.
  • a and b can both be positive integers, b ⁇ a. According to FIG.
  • the DCI scheduling information transmitted on the downlink nth time slot (TTI) will be scheduled on the (n+4)+b time slots. Resources.
  • TTI downlink nth time slot
  • TDD time division duplex
  • a similar mode can also be used for resource scheduling.
  • the first type of UE may start from receiving the DCI of the first scrambled V2V SPS-RNTI, decode all DCIs in the preset value a and obtain multiple allocated by the base station.
  • Candidate resources optionally, the first type of UE may also learn whether a plurality of candidate resources are transmitted by acquiring an additional transmission indicator on the DCI at the time of decoding, and when the transmission indicator indicates that the transmission is completed, the first type of UE will All DCIs are treated as candidate resources allocated by the base station for decoding. For example, a method of adding 1 bit on the DCI may be used as a transmission indicator to indicate whether the candidate resource is transmitted.
  • the 1-bit transmission indicator attached to the DCI is 1, it indicates that the allocated candidate resource is not transmitted; and if the DCI is completed, When the additional 1-bit transmission indicator is 0, it indicates that the allocated candidate resources have been transmitted, and the first type UE can process the scheduling information of all previous DCIs as candidate resources.
  • the indication method of the transmission indicator of the DCI is only an example. In an actual application, any manner may be used to indicate whether the DCI is sent. In this case, the first type of UE can decode multiple DCIs located in different time slots, respectively.
  • FIG. 3(c) shows a schematic diagram of DCI transmission when the delay between the candidate resource and the DCI indicating the candidate resource is a dynamic adjustment value.
  • the delay between the downlink control information used to indicate the candidate resource and any one of the candidate resources may be greater than the minimum required value, where the minimum required value may be as mentioned in FIG. 3(a).
  • a fixed time slot value, for example, 4 time slots, in FIG. 3(c), b in the delay b+4 between the candidate resource and the DCI indicating the candidate resource can be dynamically adjusted.
  • FIG. 3(c) shows a schematic diagram of DCI transmission when the delay between the candidate resource and the DCI indicating the candidate resource is a dynamic adjustment value.
  • a scheduling information about the a candidate resources is transmitted through a downlink control information in consecutive a time slots, wherein each downlink control The information is in one of the consecutive a time slots.
  • the delay between the first scheduled candidate resource and the last transmitted DCI (n+a) may be greater than the processing time of the first type UE, so that the first type UE can receive all the DCIs.
  • the resources scheduled by the base station are used for sub-link transmission.
  • both a and b can be configured by the base station.
  • a and b can both be positive integers, b ⁇ a.
  • the DCI scheduling information transmitted on the downlink nth time slot (TTI) will be scheduled on the (n+4)+b time slots. Resources.
  • TTI downlink nth time slot
  • TDD time division duplex
  • a similar mode can also be used for resource scheduling. Since b here is not a fixed value, the size of the value of b configured on each DCI can be notified by additional delay indication information (for example, a delay indicator) on the DCI delivered by the base station. For example, the value of b can be indicated by L bits.
  • the above b-valued delay indication method is merely an example, and in practical applications, any manner may be used to indicate different sizes of b values.
  • the first type of UE may start from receiving the DCI of the first scrambled V2V SPS-RNTI, decode all DCIs in the preset value a and obtain multiple allocated by the base station.
  • Candidate resources optionally, the first type of UE may also learn whether a plurality of candidate resources are transmitted by acquiring an additional transmission indicator on the DCI at the time of decoding, and when the transmission indicator indicates that the transmission is completed, the first type of UE will All DCIs are treated as candidate resources allocated by the base station for decoding. For example, a method of adding 1 bit on the DCI may be used as a transmission indicator to indicate whether the candidate resource is transmitted.
  • the 1-bit transmission indicator attached to the DCI is 1, it indicates that the allocated candidate resource is not transmitted; and if the DCI is completed, When the additional 1-bit transmission indicator is 0, it indicates that the allocated candidate resources have been transmitted, and the first type UE can process the scheduling information of all previous DCIs as candidate resources.
  • the indication method of the transmission indicator of the DCI is only an example. In an actual application, any manner may be used to indicate whether the DCI is sent. In this case, the first type of UE can decode multiple DCIs located in the same or different time slots, respectively.
  • a plurality of candidate resources allocated by the transmitting unit 1020 to the first type of UE is transmitted through signaling of the physical layer is explained above with reference to FIG.
  • multiple candidate resources may also be sent through high layer signaling such as a DL data layer or a MAC CE layer.
  • the DCI indication of the scrambled V2V SPS-RNTI may be used to include the indicated secondary link candidate.
  • the physical downlink shared channel (PDSCH) of the resource scheduling information is transmitted, so that the first type of UE obtains scheduling information of the candidate resource by decoding information on the corresponding channel.
  • This scheduling information can be indicated in a pattern of bit maps or a pattern of time-frequency resource locations.
  • the base station 1000 may further include a receiving unit (not shown) to receive the first Feedback information of the type UE regarding the selection of the plurality of candidate resources.
  • the feedback information is a resource selected by the first type of UE, or a resource that is not selected by the first type of UE.
  • the first type of UE may feed back the selected or unselected resource information to the base station 1000 through physical layer signaling or higher layer signaling.
  • the feedback may be performed on the location of the feedback information corresponding to the downlink control information of the candidate resource that is selected and/or not selected, in particular, each of the UEs may perform feedback through the physical layer signaling. Feedback is performed by acknowledgment/non-acknowledgment signaling at the location of the feedback information corresponding to the DCI.
  • the candidate resource may be selected for the DCI indication; when the feedback information at the location of the feedback information corresponding to the specific DCI is not confirmed, the representative does not select this Candidate resources indicated by the DCI.
  • the first type of UE may also feed back information through high layer signaling.
  • signaling transmission can be performed by multiplexing an uplink scheduling request mechanism.
  • the information feedback may be performed at the same time as the physical uplink shared channel (PUSCH) transmission configured by the base station, where the PUSCH may be configured together with the first type UE when the base station allocates multiple candidate resources for the secondary link transmission. .
  • PUSCH physical uplink shared channel
  • the sending unit 1020 may further determine, according to the feedback information of the first type of UE, the first type of UE to perform sub-link transmission according to the multiple candidate resources. Resources and send them.
  • the base station may determine, according to the feedback information of the first type of UE, which of the multiple candidate resources are not occupied, so that the unoccupied resources may be scheduled to other first types of UEs.
  • the first type of UE may decide whether to send feedback information to the base station according to the type of information for performing the secondary link transmission.
  • the first type of UE may not send feedback information to the base station, and select autonomously for the sub-link transmission among the multiple candidate resources scheduled by the base station, when the information of the first type of UE is the one-time information. Resources.
  • SPS Semi-Persistent Scheduling
  • the resources allocated in one SPS may be periodically used (ie, may be used multiple times). Therefore, downlink control signaling (DCI) is not required to be sent to the UE in each Transmission Time Interval (TTI), thereby reducing the overhead of control signaling.
  • DCI downlink control signaling
  • the first type UE can transmit feedback information to the base station, and the base station selects resources for performing SPS transmission. Whether the first type UE sends feedback information to the base station may be configured by the base station according to the type of information transmitted by the secondary link.
  • the first type of UE may also autonomously select resources for performing sub-link transmission according to multiple candidate resources allocated by the base station to perform sub-link transmission. Specifically, after decoding the obtained multiple candidate resources indicated in the DCI, the first type of UE may perform interception and autonomously select resources with less interference from all candidate resources for sub-link transmission. In one embodiment of the invention, the first type of UE may select the least interfered resource based on Received Signal Strength Indication (RSSI) measurements. In another embodiment of the present invention, the first type of UE may check the occupied resources in the resource allocation (SA), and perform reference signal received power (RSRP) measurement on the occupied resources, due to the received power in the occupied resources.
  • SA resource allocation
  • RSRP reference signal received power
  • the first type of UE may also discard candidate resources whose received power exceeds the threshold by using a preset threshold.
  • the first type of UE may perform resource reselection and perform secondary link transmission by increasing a threshold.
  • the first type of UE may also randomly select resources for transmission of the secondary link among all resources that are not discarded.
  • the UE of the first type may also select the resource with the smallest measured value of the RSRP for the sub-link transmission according to the measurement result of the RSRP.
  • the selection method of the foregoing candidate resources is only an example. In an actual application, any resource selection manner may be used to select a resource for sub-link transmission.
  • FIG. 11 is a block diagram showing a UE 1100 that is a first type of UE, and the first type of UE performs sub-link transmission by base station scheduling, according to an embodiment of the present invention.
  • the UE 1100 includes a receiving unit 1110 and a transmitting unit 1120.
  • the UE 1100 may include other components in addition to these two units, however, since these components are not related to the content of the embodiment of the present invention, the illustration and description thereof are omitted herein.
  • the specific details of the operations described below performed by the UE 1100 according to the embodiment of the present invention are the same as those described above with reference to FIG. 5, repeated description of the same details is omitted herein to avoid redundancy.
  • the receiving unit 1110 receives a plurality of candidate resources allocated by the base station for sub-link transmission.
  • the base station may allocate multiple candidate resources to the first type of UE for one transport block (TB) or semi-persistent scheduling (SPS), and the allocated candidate resources may be selected from the first type of UE.
  • TB transport block
  • SPS semi-persistent scheduling
  • the base station may send scheduling information about the multiple candidate resources to the first type of UE.
  • the plurality of candidate resources allocated by the base station to the first type of UE may be sent through signaling of the physical layer, or may be sent through high layer signaling such as a data link layer or a network layer.
  • multiple candidate resources allocated by the base station may also be transmitted through high-level signaling such as a DL data layer or a MAC CE layer.
  • the base station may utilize DCI of the scrambled V2V SPS-RNTI.
  • the indication includes a Physical Downlink Shared Channel (PDSCH) indicating sub-link candidate resource scheduling information, so that the first type UE obtains scheduling information of the candidate resource by decoding information on the corresponding channel.
  • PDSCH Physical Downlink Shared Channel
  • This scheduling information can be indicated in a pattern of bit maps or a pattern of time-frequency resource locations.
  • the first type UE 1100 may send feedback information about the selection of the multiple candidate resources. Specifically, after the first type of UE decoding obtains multiple candidate resources indicated in the DCI, the device may perform monitoring and select less interference resources from all candidate resources to perform feedback to the base station, so that the base station receives the first type of UE. Feedback information of the selection of the plurality of candidate resources. In one embodiment of the invention, the first type of UE may select the least interfered resource based on Received Signal Strength Indication (RSSI) measurements.
  • RSSI Received Signal Strength Indication
  • the first type of UE may check the occupied resources in the resource allocation (SA), and perform reference signal received power (RSRP) measurement on the occupied resources, due to the received power in the occupied resources.
  • SA resource allocation
  • RSRP reference signal received power
  • the first type of UE may also feed back the discarded candidate resources whose received power exceeds the threshold by the feedback information to the base station by using a preset threshold.
  • the resource may be reselected and fed back to the base station by increasing the threshold.
  • the first type of UE may also randomly select resources for sub-link transmission among all resources that are not discarded, and perform feedback.
  • the selection manner of the foregoing candidate resources is only an example. In an actual application, any resource selection manner may be used to feed back information to the base station.
  • the first type of UE 1100 may feed back the selected or unselected resource information to the base station through physical layer signaling or higher layer signaling.
  • the feedback may be performed on the location of the feedback information corresponding to the downlink control information of the candidate resource that is selected and/or not selected, in particular, each of the UEs may perform feedback through the physical layer signaling.
  • the feedback is confirmed by the acknowledgement/non-acknowledgment signaling at the position of the feedback information corresponding to the DCI.
  • the candidate resource may be selected for the DCI indication; when the feedback information at the location of the feedback information corresponding to the specific DCI is not confirmed, the representative does not select this Candidate resources indicated by the DCI.
  • the first type of UE may also feed back information through high layer signaling.
  • the signaling may be performed by multiplexing the uplink scheduling request mechanism, or may be performed while the physical uplink shared channel (PUSCH) transmission configured by the base station is transmitted.
  • PUSCH physical uplink shared channel
  • the first type UE 1100 may decide whether to send feedback information to the base station according to the type of information for performing the secondary link transmission.
  • the first type of UE may not send feedback information to the base station, and select autonomously for the sub-link transmission among the multiple candidate resources scheduled by the base station, when the information of the first type of UE is the one-time information. Resources.
  • the first type of UE performs Semi-Persistent Scheduling (SPS) transmission
  • the UE may send feedback information to the base station, and the base station selects resources for SPS transmission.
  • SPS Semi-Persistent Scheduling
  • the transmission unit 1120 performs sub-link transmission using one of the plurality of candidate resources.
  • the base station may determine, according to the feedback information of the first type of UE, the first type of UE to perform sub-link transmission in the multiple candidate resources. a resource, such that the transmission unit 1120 of the first type of UE 1100 utilizes one of the plurality of candidate resources for sub-link transmission.
  • the base station may perform resource selection according to the interference size of the resource in the candidate candidate resources that are fed back by the first type of UE, or may randomly perform the remaining resources except the unselectable resources fed back by the first type of UE. Resource selection.
  • the first type of UE 1100 may also autonomously select resources for sub-link transmission.
  • the first type of UE may autonomously select resources for performing sub-link transmission among the multiple candidate resources allocated by the base station to perform sub-link transmission by using the transmission unit 1120.
  • the first type of UE may perform interception and autonomously select resources with less interference from all candidate resources for sub-link transmission.
  • the first type of UE may select the least interfered resource based on Received Signal Strength Indication (RSSI) measurements.
  • RSSI Received Signal Strength Indication
  • the first type of UE may check the occupied resources in the resource allocation (SA), and perform reference signal received power (RSRP) measurement on the occupied resources, due to the received power in the occupied resources.
  • SA resource allocation
  • RSRP reference signal received power
  • the first type of UE may also discard candidate resources whose received power exceeds the threshold by using a preset threshold.
  • the first type of UE may perform resource reselection and perform secondary link transmission by increasing a threshold.
  • the first type of UE may also randomly select resources for transmission of the secondary link among all resources that are not discarded.
  • the selection method of the foregoing candidate resources is only an example. In an actual application, any resource selection manner may be used to select a resource for sub-link transmission.
  • FIG. 12 is a block diagram showing a UE 1200 that is a first type of UE, and the first type of UE performs sub-link transmission by base station scheduling, according to another embodiment of the present invention.
  • the UE 1200 includes a receiving unit 1210, a determining unit 1220, and a transmitting unit 1230.
  • the UE 1200 may include other components in addition to the three units, however, since these components are not related to the content of the embodiment of the present invention, the illustration and description thereof are omitted herein.
  • the specific details of the following operations performed by the UE 1200 according to the embodiment of the present invention are the same as those described above with reference to FIG. 6, the repeated description of the same details is omitted herein to avoid repetition.
  • the receiving unit 1210 receives the first resource allocated by the base station for sub-link transmission.
  • the first resource allocated by the base station to the first type of UE may be from the shared resource of the first resource pool and the second resource pool.
  • the determining unit 1220 determines whether the first resource collides with a second resource used by the second type UE for sub-link transmission, wherein the second type UE autonomously performs sub-link transmission.
  • the determining unit 1220 may determine, by listening to the shared resource between the first resource pool and the second resource pool, whether the first resource allocated by the base station collides with the second resource used by the second type UE, where Whether the type UE is listening can be configured by the base station, or the first type UE can always listen by default.
  • the determining unit 1220 may check the first resource in the resource allocation (SA) and perform measurement of reference signal received power (RSRP). When the measured power is greater than a preset threshold, the first allocated by the base station may be considered. Resources are occupied.
  • the first type of UE may further determine whether the first resource is occupied by estimating whether the average RSSI is greater than a preset threshold.
  • the first type of UE may determine whether the average RSSI per 100 ms in the listening window is The preset threshold is exceeded to determine the occupancy of the first resource.
  • the first type of UE may further determine whether the first resource is occupied by considering the measurement of the RSRP and the measurement result of the average RSSI.
  • the first type of UE may perform autonomous resource selection with reference to the second type of UE.
  • the first type of UE may select a resource whose RSRP is less than a preset threshold, measure RSSI on the resources, and perform resources according to the RSSI size. Sort.
  • the first type of UE may select, for example, a preset number or a predetermined percentage of resources with a lower RSSI, and treat these resources as optional resources. Therefore, when the first resource allocated by the base station to the first type of UE and the optional resources are coincident, the first type of UE considers that the first resource allocated by the base station is an available resource; otherwise, when the base station allocates the first When the resource is not within the range of these optional resources, the first type of UE considers that the first resource is already occupied.
  • the sending unit 1230 sends the collision indication information when the first resource collides with the second resource.
  • the first type of UE may send the collision indication information to the base station, so that the base station performs reallocation of resources for performing sub-link transmission on the first type of UE.
  • the first type UE may further send collision indication information to the second type UE, so that the second type UE reselects resources of the secondary link transmission.
  • the sending unit 1230 may feed back the selected or unselected resource information to the base station by using physical layer signaling or higher layer signaling.
  • the feedback may be performed on the location of the feedback information corresponding to the downlink control information of the first resource that is selected and/or not selected, in particular, the first type of UE may perform the feedback through the physical layer signaling.
  • the feedback is confirmed by the acknowledgement/non-acknowledgment signaling at the position of the feedback information corresponding to the DCI.
  • the representative may select the first resource indicated by the DCI; when the feedback information at the location of the feedback information corresponding to the specific DCI is not confirmed, the representative does not select this The first resource indicated by a DCI.
  • the sending unit 1230 can also feed back information through high layer signaling.
  • the signaling may be performed by multiplexing the uplink scheduling request mechanism, or may be performed while the physical uplink shared channel (PUSCH) transmission configured by the base station is transmitted.
  • the content of the collision indication information may include one or more of the following: indicating whether the allocated first resource collides, the RSRP measurement of the SA allocation resource, the RSSI measurement value, the reservation period of the same resource allocated by the SA, according to The first type of UE listens to the resulting recommended resource location and the like.
  • the transmitting unit 1230 may decide whether to send the collision indication information according to the type of information for performing the secondary link transmission.
  • the first type of UE may not send the collision indication information and independently select the resource for the sub-link transmission when the information of the sub-type transmission by the first type of UE is one-time information.
  • the first type of UE may send collision indication information to the base station or the second type of UE, and the base station selects resources for performing SPS transmission or causes the second type of UE to reselect. It performs resources for sub-link transmission.
  • Whether the UE of the first type transmits collision indication information may be configured by the base station according to the type of information transmitted by the secondary link.
  • the structure of the UE 1200 is specifically described above with reference to the structure of the UE 1200.
  • the first type of UE 1200 may also adopt a manner of actively reporting resource occupation to the base station before the collision, so that the base station avoids allocating the first type of UE 1200 to a collision that may occur when the resource is allocated. Resources to avoid collisions.
  • the sending unit 1230 of the first type of UE may actively report the resource occupation to the base station through continuous resource monitoring.
  • the monitoring of the first type of UE may be pre-configured by the base station.
  • the resource occupation report sent by the sending unit 1230 to the base station may be reported periodically or aperiodically by the high layer signaling.
  • the sending unit 1230 may periodically report the resource occupation report together with the location information thereof, or may be performed according to the requirements of the base station. Reported.
  • the resource occupancy report can also be monitored and reported by a roadside node (RSU).
  • RSU roadside node
  • the resource occupation report reported by the sending unit 1230 and/or the RSU of the first type of UE may include one or more of the following: an RSRP measurement, an RSSI measurement value, a reservation period of the SA allocation resource, according to the first The recommended resource location obtained by the monitoring result of the type UE and/or RSU, and the like.
  • the resource occupation report of the sending unit 1230 and/or the RSU of the first type UE includes a specific subset in the listening window or covers all time-frequency resources monitored by the UE, and the range of the report may be It is determined according to the configuration of the base station.
  • the resource occupation report may be reported together with the foregoing collision indication information, so that the base station reconfigures the first resource used by the first type of UE.
  • FIG. 13 is a block diagram showing a UE 1300 that is a first type of UE, and the first type of UE performs sub-link transmission by base station scheduling, according to an embodiment of the present invention.
  • the UE 1300 includes a receiving unit 1310, a judging unit 1320, and a selecting unit 1330.
  • the UE 1300 may include other components in addition to these three units, however, since these components are not related to the content of the embodiment of the present invention, the illustration and description thereof are omitted herein. Further, since the specific details of the operations described below performed by the UE 1300 according to the embodiment of the present invention are the same as those described above with reference to FIG. 7, the repeated description of the same details is omitted herein to avoid repetition.
  • the receiving unit 1310 receives the first resource allocated by the base station for sub-link transmission.
  • the first resource allocated by the base station to the first type of UE may be from the shared resource of the first resource pool and the second resource pool.
  • the determining unit 1320 determines whether the first resource collides with a second resource used by the second type UE for sub-link transmission, wherein the second type UE autonomously performs sub-link transmission.
  • the determining unit 1320 may determine whether the first resource allocated by the base station is collided by the second resource used by the second type UE by monitoring the shared resource between the first resource pool and the second resource pool.
  • the determining unit 1320 may check the first resource in the resource allocation (SA) and perform measurement of reference signal received power (RSRP). When the measured power is greater than a preset threshold, the first allocated by the base station may be considered. Resources are occupied.
  • the determining unit 1320 may further determine whether the first resource is occupied by estimating whether the average RSSI is greater than a preset threshold. For example, the determining unit 1320 may determine whether the average RSSI per 100 ms in the listening window exceeds a preset. A threshold is set to determine the occupancy of the first resource. In another embodiment of the present invention, the determining unit 1320 may further determine whether the first resource is occupied by considering the measurement of the RSRP and the measurement result of the average RSSI.
  • the selecting unit 1330 when the first resource collides with the second resource, the first type UE autonomously selects a third resource different from the second resource to perform sub-link transmission.
  • the selecting unit 1330 may autonomously select a resource for performing sub-link transmission for sub-link transmission.
  • the first type of UE may perform resource monitoring and autonomously select a less interfered resource from among multiple optional resources for sub-link transmission.
  • selection unit 1330 may select the least interfered resource based on Received Signal Strength Indication (RSSI) measurements.
  • the selecting unit 1330 may also check resources occupied in the resource allocation (SA), and perform measurement of reference signal received power (RSRP) to determine resources that cannot be selected and discard, and then All resources that are not discarded are randomly selected for sub-link transmission.
  • SA resource allocation
  • RSRP reference signal received power
  • the selection method of the foregoing candidate resources is only an example. In an actual application, any resource selection manner may be used to select a resource for sub-link transmission.
  • the selection unit 1330 may transmit to the base station the third resource that it independently selects for the secondary link transmission.
  • the first type of UE may use the third resource to perform sub-link transmission for a period of time, and stop using the third resource for sub-link transmission when certain conditions or conditions are met, where
  • the condition may include: when the transmission of one transport block is completed by using the third resource, stopping using the third resource for sub-link transmission; when the autonomous resource reselection of the semi-persistent scheduling SPS is triggered, stopping the use Determining that the third resource performs sub-link transmission; when the preset time or period is met, stopping using the third resource for sub-link transmission; and/or stopping the use when the UE receives the new scheduling resource of the base station again
  • the third resource is used for sub-link transmission.
  • the sub-link transmission may be performed by using the manner of the base station scheduling.
  • the third resource is selected from a second resource pool, and the second resource pool is associated with a first resource pool, where the first resource pool is used in a secondary link transmission mode.
  • Information transmission of the first type of UE, and the second resource pool is used for information transmission of the second type of UE in the sub-link transmission mode.
  • the association between the second resource pool and the first resource pool may be configured by a base station. For example, when there are multiple first resource pools and multiple second resource pools, a certain first resource pool may be associated with one or more second resource pools.
  • each first resource pool is also It can be in one-to-one correspondence with each of the second resource pools.
  • the first type of UE may perform autonomous selection and sub-link transmission of the third resource using parameters of semi-permanent scheduling configured by the base station.
  • the first type of UE may further send a scheduling abandonment report to the base station, where the scheduled abandonment report indicates that the first type of UE abandons the first resource scheduled by the base station.
  • the scheduling abandonment report may send a scheduling abandonment report through low layer or higher layer signaling such as a physical layer, a data link layer, or a network layer.
  • FIG. 14 is a block diagram showing a UE 1400 that is a second type of UE that performs a secondary link transmission autonomously, in accordance with an embodiment of the present invention.
  • the UE 1400 includes a receiving unit 1410 and a selecting unit 1420.
  • the UE 1400 may include other components in addition to these two units, however, since these components are not related to the content of the embodiment of the present invention, the illustration and description thereof are omitted herein. In addition, since the specific details of the operations described below performed by the UE 1400 according to the embodiment of the present invention are the same as those described above with reference to FIG. 8, the repeated description of the same details is omitted herein to avoid repetition.
  • the receiving unit 1410 receives the collision indication information sent by the first type of UE, where the first type of UE performs sub-link transmission by using the first resource by the base station, and the collision indication information indicates the first The resource collides with a second resource used by the second type of UE for sub-link transmission.
  • the first resource allocated by the base station to the first type of UE may be from the shared resource of the first resource pool and the second resource pool.
  • the first type of UE may determine whether the first resource allocated by the base station is collided by the second resource used by the second type UE by monitoring the shared resource between the first resource pool and the second resource pool.
  • the first type of UE may check the first resource in the resource allocation (SA) and perform measurement of reference signal received power (RSRP). When the measured power is greater than a preset threshold, the first allocated by the base station may be considered. A resource is occupied.
  • the first type of UE may further determine whether the first resource is occupied by estimating whether the average RSSI is greater than a preset threshold.
  • the first type of UE may determine whether the average RSSI per 100 ms in the listening window is The preset threshold is exceeded to determine the occupancy of the first resource.
  • the first type of UE may further determine whether the first resource is occupied by considering the measurement of the RSRP and the measurement result of the average RSSI. When the first resource collides with the second resource, the first type UE will send collision indication information to the second type UE.
  • the collision indication information may be a one-time SA message sent by the first type UE to the second type UE, and the SA message may be before or after the transmission of the first transport block.
  • the SA message may include a signaling identifier, and the signaling identifier may be 1 bit. For example, when the bit is 1, the second type UE may be instructed to perform resource reselection, and when the bit is When the bit is 0, the second type of UE does not need to perform resource reselection.
  • the SA message may also include content in a traditional SA message.
  • the SA message may include one or more of the following: priority, resource reservation, frequency resource allocation (indicating the frequency domain location of the first type of UE resource) ), the time interval between initial transmission and retransmission (indicating the time domain location of the first type of UE resources), MCS, retransmission index, reserved bits.
  • the first type of UE may decide whether to send collision indication information according to the type of information for performing the secondary link transmission.
  • the first type of UE may not send the collision indication information and independently select the resource for the sub-link transmission when the information of the sub-type transmission by the first type of UE is one-time information.
  • the first type UE may send collision indication information to the second type UE, and cause the second type UE to reselect the resources for which the secondary link transmission is performed.
  • Whether the UE of the first type transmits collision indication information may be configured by the base station according to the type of information transmitted by the secondary link.
  • Selection unit 1420 reselects the resources transmitted by the secondary link.
  • the selecting unit 1420 may perform autonomous selection in the second resource pool allocated thereto to change the resources for which the secondary link transmission is performed.
  • each functional block may be implemented by one device that is physically and/or logically combined, or two or more devices that are physically and/or logically separated, directly and/or indirectly (eg, This is achieved by a plurality of devices as described above by a wired and/or wireless connection.
  • the radio base station, the user equipment, and the like in one embodiment of the present invention can function as a computer that performs processing of the radio communication method of the present invention.
  • FIG. 15 is a diagram showing an example of a hardware configuration of a user equipment according to an embodiment of the present invention.
  • the above-described base stations 900, 1000 and user equipments 1100, 1200, 1300 and 1400 can be used as computer devices physically including a processor 1510, a memory 1520, a memory 1530, a communication device 1540, an input device 1550, an output device 1560, a bus 1570, and the like. Come to form.
  • the hardware structures of the base stations 900, 1000 and the user equipments 1100, 1200, 1300, and 1400 may include one or more of the devices shown in the figures, or may not include some of the devices.
  • processor 1510 is only illustrated as one, but may be multiple processors.
  • the processing may be performed by one processor, or may be performed by one or more processors simultaneously, sequentially, or by other methods.
  • the processor 1510 can be installed by more than one chip.
  • the functions of the base stations 900, 1000 and the user equipments 1100, 1200, 1300, and 1400 are realized, for example, by reading the prescribed software (program) into the processor 1510, the memory 1520, and the like, thereby causing the processor 1510.
  • the calculation is performed to control the communication by the communication device 940, and to control the reading and/or writing of the data in the memory 1520 and the memory 1530.
  • the processor 510 for example, causes the operating system to operate to control the computer as a whole.
  • the processor 1510 may be configured by a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like.
  • CPU central processing unit
  • the processor 1510 reads out programs (program codes), software modules, data, and the like from the memory 1530 and/or the communication device 1540 to the memory 1520, and executes various processes in accordance therewith.
  • programs program codes
  • the program a program for causing a computer to execute at least a part of the operations described in the above embodiments can be employed.
  • the allocation unit 1010 of the base station 1000 can be implemented by a control program stored in the memory 1520 and operating by the processor 1510. For other functional blocks, the same can be achieved.
  • the memory 1520 is a computer readable recording medium, and may be, for example, a read only memory (ROM), an EEPROM (Erasable Programmable ROM), an electrically programmable read only memory (EEPROM), or an electrically programmable read only memory (EEPROM). At least one of a random access memory (RAM) and other suitable storage medium is used.
  • the memory 1520 may also be referred to as a register, a cache, a main memory (main storage device), or the like.
  • the memory 1520 can store an executable program (program code), a software module, and the like for implementing the wireless communication method according to the embodiment of the present invention.
  • the memory 1530 is a computer readable recording medium, and may be, for example, a flexible disk, a soft (registered trademark) disk (floppy disk), a magneto-optical disk (for example, a CD-ROM (Compact Disc ROM), etc.). Digital Versatile Disc, Blu-ray (registered trademark) disc, removable disk, hard drive, smart card, flash device (eg card, stick, key driver), magnetic stripe, database At least one of a server, a server, and other suitable storage medium. Memory 1530 may also be referred to as an auxiliary storage device.
  • the communication device 1540 is hardware (transmission and reception device) for performing communication between computers through a wired and/or wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, and the like, for example.
  • Communication device 1540 may include, but is not limited to, a high frequency switch, a filter, a frequency synthesizer, and the like.
  • the above-described transmission unit 1120 or the like can be implemented by the communication device 1540.
  • Input device 1550 is an input device (eg, a keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside.
  • the output device 1560 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that performs an output to the outside.
  • the input device 1550 and the output device 1560 may also be an integrated structure (for example, a touch panel).
  • each device such as the processor 1510, the memory 1520, and the like are connected by a bus 1570 for communicating information.
  • the bus 1570 can be composed of a single bus or a different bus between devices.
  • the base stations 900, 1000 and the user equipments 1100, 1200, 1300, and 1400 may include a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), and a programmable logic device.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • Hardware such as (PLD, Programmable Logic Device) or Field Programmable Gate Array (FPGA) can realize some or all of each functional block by this hardware.
  • the processor 1510 can be installed by at least one of these hardware.
  • the channel and/or symbol can also be a signal (signaling).
  • the signal can also be a message.
  • the reference signal may also be simply referred to as an RS (Reference Signal), and may also be referred to as a pilot (Pilot), a pilot signal, or the like according to applicable standards.
  • a component carrier may also be referred to as a cell, a frequency carrier, a carrier frequency, or the like.
  • the radio frame may be composed of one or more periods (frames) in the time domain.
  • Each of the one or more periods (frames) constituting the radio frame may also be referred to as a subframe.
  • a subframe may be composed of one or more time slots in the time domain.
  • the subframe may be a fixed length of time (eg, 1 ms) that is independent of the numerology.
  • the time slot may have one or more symbols in the time domain (Orthogonal Frequency Division Multiplexing (OFDM), Single Carrier Frequency Division Multiple Access (SC-FDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA) Symbols, etc.).
  • the time slot can also be a time unit based on parameter configuration.
  • the time slot may also include a plurality of minislots. Each minislot may be composed of one or more symbols in the time domain.
  • a minislot can also be referred to as a subslot.
  • Radio frames, subframes, time slots, mini-slots, and symbols all represent time units when signals are transmitted. Radio frames, subframes, time slots, mini-slots, and symbols can also use other names that correspond to each other.
  • one subframe may be referred to as a Transmission Time Interval (TTI), and a plurality of consecutive subframes may also be referred to as a TTI.
  • TTI Transmission Time Interval
  • One slot or one minislot may also be referred to as a TTI. That is to say, the subframe and/or the TTI may be a subframe (1 ms) in the existing LTE, or may be a period shorter than 1 ms (for example, 1 to 13 symbols), or may be a period longer than 1 ms.
  • a unit indicating a TTI may also be referred to as a slot, a minislot, or the like instead of a subframe.
  • TTI refers to, for example, a minimum time unit scheduled in wireless communication.
  • the radio base station performs scheduling for all user equipments to allocate radio resources (bandwidth, transmission power, etc. usable in each user equipment) in units of TTIs.
  • the definition of TTI is not limited to this.
  • the TTI may be a channel-coded data packet (transport block), a code block, and/or a codeword transmission time unit, or may be a processing unit such as scheduling, link adaptation, or the like.
  • the time interval e.g., the number of symbols
  • actually mapped to the transport block, code block, and/or codeword may also be shorter than the TTI.
  • TTI time slot or one mini time slot
  • more than one TTI ie, more than one time slot or more than one micro time slot
  • the number of slots (the number of microslots) constituting the minimum time unit of the scheduling can be controlled.
  • a TTI having a length of 1 ms may also be referred to as a regular TTI (TTI in LTE Rel. 8-12), a standard TTI, a long TTI, a regular subframe, a standard subframe, or a long subframe.
  • TTI shorter than a conventional TTI may also be referred to as a compressed TTI, a short TTI, a partial TTI (partial or fractional TTI), a compressed subframe, a short subframe, a minislot, or a subslot.
  • a long TTI (eg, a regular TTI, a subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms
  • a short TTI eg, a compressed TTI, etc.
  • TTI length of the TTI may be replaced with 1 ms.
  • a resource block is a resource allocation unit of a time domain and a frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain.
  • the RB may include one or more symbols in the time domain, and may also be one slot, one minislot, one subframe, or one TTI.
  • a TTI and a subframe may each be composed of one or more resource blocks.
  • one or more RBs may also be referred to as a physical resource block (PRB, Physical RB), a sub-carrier group (SCG), a resource element group (REG, a resource element group), a PRG pair, an RB pair, and the like. .
  • the resource block may also be composed of one or more resource elements (REs, Resource Elements).
  • REs resource elements
  • Resource Elements For example, one RE can be a subcarrier and a symbol of a radio resource area.
  • radio frames, subframes, time slots, mini-slots, symbols, and the like are merely examples.
  • the number of subframes included in the radio frame, the number of slots of each subframe or radio frame, the number of microslots included in the slot, the number of symbols and RBs included in the slot or minislot, and the number of RBs included in the RB The number of subcarriers, the number of symbols in the TTI, the symbol length, and the length of the cyclic prefix (CP, Cyclic Prefix) can be variously changed.
  • the information, parameters, and the like described in the present specification may be expressed by absolute values, may be represented by relative values with predetermined values, or may be represented by other corresponding information.
  • wireless resources can be indicated by a specified index.
  • the formula or the like using these parameters may be different from those explicitly disclosed in the present specification.
  • the information, signals, and the like described in this specification can be expressed using any of a variety of different techniques.
  • data, commands, instructions, information, signals, bits, symbols, chips, etc. which may be mentioned in all of the above description, may pass voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of them. Combined to represent.
  • information, signals, and the like may be output from the upper layer to the lower layer, and/or from the lower layer to the upper layer.
  • Information, signals, etc. can be input or output via a plurality of network nodes.
  • Information or signals input or output can be stored in a specific place (such as memory) or managed by a management table. Information or signals input or output may be overwritten, updated or supplemented. The output information, signals, etc. can be deleted. The input information, signals, etc. can be sent to other devices.
  • the notification of the information is not limited to the mode/embodiment described in the specification, and may be performed by other methods.
  • the notification of the information may be through physical layer signaling (for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and upper layer signaling (for example, radio resource control).
  • DCI Downlink Control Information
  • UCI Uplink Control Information
  • RRC Radio Resource Control
  • MIB Master Information Block
  • SIB System Information Block
  • MAC Media Access Control
  • the physical layer signaling may be referred to as L1/L2 (Layer 1/Layer 2) control information (L1/L2 control signal), L1 control information (L1 control signal), and the like.
  • the RRC signaling may also be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
  • the MAC signaling can be notified, for example, by a MAC Control Unit (MAC CE).
  • MAC CE MAC Control Unit
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, should be interpreted broadly to mean commands, command sets, code, code segments, program code, programs, sub- Programs, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, steps, functions, and the like.
  • software, commands, information, and the like may be transmitted or received via a transmission medium.
  • a transmission medium For example, when using wired technology (coax, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) from a website, server, or other remote source
  • wired technology coax, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • base station (BS, Base Station)", “radio base station”, “eNB”, “gNB”, “cell”, “sector”, “cell group”, “carrier”, and “component carrier”
  • BS Base Station
  • radio base station eNB
  • gNB gNodeB
  • cell a cell
  • cell group a carrier
  • component carrier a component carrier
  • the base station is sometimes referred to by a fixed station, a NodeB, an eNodeB (eNB), an access point, a transmission point, a reception point, a femto cell, a small cell, and the like.
  • a base station can accommodate one or more (eg, three) cells (also referred to as sectors). When the base station accommodates multiple cells, the entire coverage area of the base station can be divided into a plurality of smaller areas, and each smaller area can also pass through the base station subsystem (for example, a small indoor base station (RFH, remote head (RRH), Remote Radio Head))) to provide communication services.
  • the term "cell” or “sector” refers to a portion or the entirety of the coverage area of a base station and/or base station subsystem that performs communication services in the coverage.
  • the base station is sometimes referred to by a fixed station, a NodeB, an eNodeB (eNB), an access point, a transmission point, a reception point, a femto cell, a small cell, and the like.
  • eNB eNodeB
  • Mobile stations are also sometimes used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless Terminals, remote terminals, handsets, user agents, mobile clients, clients, or several other appropriate terms are used.
  • the wireless base station in this specification can also be replaced with a user terminal.
  • each mode/embodiment of the present invention can be applied to a configuration in which communication between a radio base station and a user terminal is replaced with communication between a plurality of user-to-device (D2D) devices.
  • D2D user-to-device
  • the function of the above-described wireless base station can be regarded as a function of the user terminal.
  • words such as "upstream” and "downstream” can also be replaced with "side”.
  • the uplink channel can also be replaced with a side channel.
  • the user terminal in this specification can also be replaced with a wireless base station.
  • the function of the above-described user terminal can be regarded as a function of the wireless base station.
  • the node may be considered, for example, but not limited to, a Mobility Management Entity (MME), a Serving-Gateway (S-GW, etc.), or a combination thereof.
  • MME Mobility Management Entity
  • S-GW Serving-Gateway
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • LTE-B Long-Term Evolution
  • LTE-Beyond Long-Term Evolution
  • Super 3rd generation mobile communication system SUPER 3G
  • IMT-Advanced advanced international mobile communication
  • 4th generation mobile communication system (4G, 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • future radio access FAA
  • new radio access technology New-RAT, Radio Access Technology
  • NR New Radio Access Technology
  • NX new radio access
  • FX Next Generation Wireless Access
  • GSM Registered trademark
  • GSM Global System for Mobile Communications
  • CDMA2000 Code Division Multiple Access 2000
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX (registered trademark)
  • IEEE 802.20 Ultra Wideband
  • any reference to a unit using the names "first”, “second”, etc., as used in this specification, does not fully limit the number or order of the units. These names can be used in this specification as a convenient method of distinguishing between two or more units. Thus, reference to a first element and a second element does not mean that only two elements may be employed or that the first element must prevail in the form of the second unit.
  • determination used in the present specification sometimes includes various actions. For example, regarding “judgment (determination)", calculation, calculation, processing, deriving, investigating, and looking up (eg, tables, databases, or other) may be performed (calculating), computing, processing, deriving, investigating, and searching. Search in the data structure, ascertaining, etc. are considered to be “judgment (determination)”. Further, regarding “judgment (determination)”, reception (for example, receiving information), transmission (for example, transmission of information), input (input), output (output), and access (for example) may also be performed (for example, Accessing data in memory, etc. is considered to be “judgment (determination)”.
  • judgment (determination) it is also possible to consider “resolving”, “selecting”, selecting (choosing), establishing (comparing), comparing (comparing), etc. as “judging (determining)”. That is to say, regarding "judgment (determination)", several actions can be regarded as performing "judgment (determination)".
  • connection means any direct or indirect connection or combination between two or more units, This includes the case where there is one or more intermediate units between two units that are “connected” or “coupled” to each other.
  • the combination or connection between the units may be physical, logical, or a combination of the two.
  • connection can also be replaced with "access”.
  • two units may be considered to be electrically connected by using one or more wires, cables, and/or printed, and as a non-limiting and non-exhaustive example by using a radio frequency region.
  • the electromagnetic energy of the wavelength of the region, the microwave region, and/or the light is "connected” or "bonded” to each other.

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Abstract

本发明的实施例提供了资源配置和调度方法、基站以及用户设备。根据本发明的实施例提供了一种资源配置方法，所述方法由基站执行，包括：配置第一资源池，所述第一资源池用于副链路传输模式下的第一类型UE的信息传输，其中所述第一类型UE通过基站调度进行副链路传输；配置第二资源池，所述第二资源池用于副链路传输模式下的第二类型UE的信息传输，其中所述第二类型UE自主进行副链路传输，所述第一资源池和所述第二资源池相互正交。

Description

资源配置和调度方法、基站以及用户设备 技术领域
本发明涉及无线通信领域，并且具体涉及可以在无线通信系统中使用的资源配置和调度方法、基站以及用户设备。
背景技术
设备间通信(D2D communications)已成为在4G和5G通信系统中使用的重要技术。除了传统的用于用户设备与基站之间上行(uplink)、下行(downlink)传输的Uu接口以外，为了支持设备间通信，在通信系统中，还提出了PC5接口。根据不同的应用场景，PC5接口可具有多种模式。例如，针对在范围内的第一类型UE的模式3(mode 3)，以及针对在范围内的第二类型UE以及不在范围内UE的模式4(mode 4)。其中，第一类型的UE通过基站调度进行副链路(sidelink)传输，而第二类型的UE自主(autonomous)进行副链路传输。
基站可以对PC5接口的模式3和模式4分别配置对应的资源池，以供第一类型UE和第二类型UE分别进行副链路传输。具体地，可以针对模式3配置模式3资源池(第一资源池)，针对模式4配置模式4资源池(第二资源池)。其中，为了提高资源利用效率，避免资源分散，在现有技术中，第一资源池和第二资源池可以具有一部分共享资源，在这种情况下，基站可以调度模式3的第一类型UE动态地使用这部分共享资源进行副链路传输。
但是，由于基站并不能够得知第二类型UE自主进行副链路传输时的资源占据状况，因此，当基站向第一类型UE分配这部分共享资源时，可能与第二类型UE当前所占据的资源发生碰撞，从而降低了信息传输的效率，影响了用户体验。
发明内容
根据本发明的一个方面，提供了一种资源配置方法，所述方法由基站执行，包括：配置第一资源池，所述第一资源池用于副链路传输模式下的第一类型UE的信息传输，其中所述第一类型UE通过基站调度进行副链路传输； 配置第二资源池，所述第二资源池用于副链路传输模式下的第二类型UE的信息传输，其中所述第二类型UE自主进行副链路传输，所述第一资源池和所述第二资源池相互正交。
根据本发明的另一个方面，提供了一种资源调度方法，所述方法由基站执行，包括：向第一类型UE分配用于副链路传输的多个候选资源，其中所述第一类型UE通过基站调度进行副链路传输；向所述第一类型UE发送关于所述多个候选资源的调度信息。
根据本发明的另一个发明，提供了一种资源调度方法，由第一类型UE执行，其中所述第一类型UE通过基站调度进行副链路传输，所述方法包括：接收基站分配的用于副链路传输的多个候选资源；利用所述多个候选资源中的一个进行副链路传输。
根据本发明的另一个方面，提供了一种资源调度方法，由第一类型UE执行，其中所述第一类型UE通过基站调度进行副链路传输，所述方法包括：接收基站分配的用于副链路传输的第一资源；判断所述第一资源是否与第二类型UE进行副链路传输所使用的第二资源发生碰撞，其中所述第二类型UE自主进行副链路传输；当所述第一资源与所述第二资源发生碰撞时，发送碰撞指示信息。
根据本发明的另一个方面，提供了一种资源调度方法，由第一类型UE执行，其中所述第一类型UE通过基站调度进行副链路传输，所述方法包括：接收基站分配的用于副链路传输的第一资源；判断所述第一资源是否与第二类型UE进行副链路传输所使用的第二资源发生碰撞，其中所述第二类型UE自主进行副链路传输；当所述第一资源与所述第二资源发生碰撞时，所述第一类型UE自主选择与所述第二资源不同的第三资源进行副链路传输。
根据本发明的另一个方面，提供了一种资源调度方法，由第二类型UE执行，其中所述第二类型UE自主进行副链路传输，所述方法包括：接收第一类型UE发送的碰撞指示信息，其中所述第一类型UE通过基站调度通过第一资源进行副链路传输，所述碰撞指示信息指示所述第一资源与所述第二类型UE进行副链路传输所使用的第二资源发生碰撞；重新选择用于副链路传输的资源。
根据本发明的另一个方面，提供了一种基站，包括：第一配置单元，用 于配置第一资源池，所述第一资源池用于副链路传输模式下的第一类型UE的信息传输，其中所述第一类型UE通过基站调度进行副链路传输；第二配置单元，用于配置第二资源池，所述第二资源池用于副链路传输模式下的第二类型UE的信息传输，其中所述第二类型UE自主进行副链路传输，所述第一资源池和所述第二资源池相互正交。
根据本发明的另一个方面，提供了一种基站，包括：分配单元，配置为向第一类型UE分配用于副链路传输的多个候选资源，其中所述第一类型UE通过基站调度进行副链路传输；发送单元，配置为向所述第一类型UE发送关于所述多个候选资源的调度信息。
根据本发明的另一个方面，提供了一种用户设备，所述用户设备为第一类型UE，所述第一类型UE通过基站调度进行副链路传输，包括：接收单元，配置为接收基站分配的用于副链路传输的多个候选资源；传输单元，配置为利用所述多个候选资源中的一个进行副链路传输。
根据本发明的另一个方面，提供了一种用户设备，所述用户设备为第一类型UE，所述第一类型UE通过基站调度进行副链路传输，包括：接收单元，配置为接收基站分配的用于副链路传输的第一资源；判断单元，配置为判断所述第一资源是否与第二类型UE进行副链路传输所使用的第二资源发生碰撞，其中所述第二类型UE自主进行副链路传输；发送单元，配置为当所述第一资源与所述第二资源发生碰撞时，发送碰撞指示信息。
根据本发明的另一个方面，提供了一种用户设备，所述用户设备为第一类型UE，所述第一类型UE通过基站调度进行副链路传输，包括：接收单元，配置为接收基站分配的用于副链路传输的第一资源；判断单元，配置为判断所述第一资源是否与第二类型UE进行副链路传输所使用的第二资源发生碰撞，其中所述第二类型UE自主进行副链路传输；选择单元，配置为当所述第一资源与所述第二资源发生碰撞时，自主选择与所述第二资源不同的第三资源进行副链路传输。
根据本发明的另一个方面，提供了一种用户设备，所述用户设备为第二类型UE，所述第二类型UE自主进行副链路传输，包括：接收单元，配置为接收第一类型UE发送的碰撞指示信息，其中所述第一类型UE通过基站调度通过第一资源进行副链路传输，所述碰撞指示信息指示所述第一资源与 所述第二类型UE进行副链路传输所使用的第二资源发生碰撞；选择单元，配置为重新选择用于副链路传输的资源。
利用根据本发明上述方面的资源配置和调度方法、基站以及用户设备，可以通过碰撞前避免或碰撞后处理的方式有效地避免通过基站调度进行副链路传输的第一类型UE和自主进行副链路传输的第二类型UE之间的资源碰撞，提高了信息传输的效率，改善了用户体验。
附图说明
通过结合附图对本发明的实施例进行详细描述，本发明的上述和其它目的、特征、优点将会变得更加清楚。
图1示出根据本发明一个实施例的资源配置方法的流程图；
图2示出根据本发明一个实施例的资源调度方法的流程图；
图3示出根据本发明实施例的基站调度信息的发送方式的示意图，其中图3(a)示出复用R-14的副链路调度时序(timeline)的DCI发送示意图，图3(b)示出了候选资源与指示此候选资源的DCI之间的时延为固定值时的DCI发送示意图，图3(c)示出了候选资源与指示此候选资源的DCI之间的时延为动态调整值时的DCI发送示意图；
图4示出根据本发明一个实施例的资源调度方法的流程图；
图5示出根据本发明一个实施例的资源调度方法的流程图；
图6示出根据本发明一个实施例的资源调度方法的流程图；
图7示出根据本发明一个实施例的资源调度方法的流程图；
图8示出根据本发明一个实施例的资源调度方法的流程图；
图9示出根据本发明一个实施例的基站的框图；
图10示出根据本发明一个实施例的基站的框图；
图11示出根据本发明一个实施例的用户设备的框图；
图12示出根据本发明一个实施例的用户设备的框图；
图13示出根据本发明一个实施例的用户设备的框图；
图14示出根据本发明一个实施例的用户设备的框图；
图15示出本发明的一实施方式所涉及的基站和用户设备的硬件结构的示例的图。
具体实施方式
下面将参照附图来描述根据本发明实施例的资源配置和调度方法、基站以及用户设备。在附图中，相同的参考标号自始至终表示相同的元件。应当理解：这里描述的实施例仅仅是说明性的，而不应被解释为限制本发明的范围。此外，这里所述的UE可以包括各种类型的用户设备，例如移动终端(或称为移动台)或者固定终端，然而为方便起见，在下文中有时候可互换地使用UE和用户设备。
在通信系统中，具有支持设备间通信的PC5接口。如前所述，基站给第一类型UE分配的第一资源池和给第二类型UE分配的第二资源池可以具有一部分共享资源，但这种资源分配和调度方式无法避免第一类型UE在进行副链路传输时可能与第二类型UE当前所占据的资源发生碰撞的情况，从而影响了副链路信息的传输效果。
下面，将参照附图来描述本发明实施例的资源配置和调度方法、基站以及用户设备。
以下，参照图1描述根据本发明一个实施例的资源配置方法。图1示出了本发明一个实施例的资源配置方法100的流程图，所述方法由基站执行。
如图1所示，在步骤S101中，配置第一资源池，所述第一资源池用于副链路传输模式下的第一类型UE的信息传输，其中所述第一类型UE通过基站调度进行副链路传输。
在本发明实施例中，副链路可以等价于终端直连链路。如前所述，第一类型UE为PC5接口模式3在范围内的UE，其副链路信息传输的资源由基站进行调度。例如，第一类型UE可以为处于无线资源控制(RRC)连接状态的UE。
在步骤S102中，配置第二资源池，所述第二资源池用于副链路传输模式下的第二类型UE的信息传输，其中所述第二类型UE自主进行副链路传输，所述第一资源池和所述第二资源池相互正交。同样如前所述，第二类型UE为PC5接口模式4的在范围内的UE，其副链路信息传输的资源由第二类型UE自主进行分配。例如，第二类型UE可以为处于RRC空闲(idle)状态的UE和/或使用车到特定目标的通信(V2X)专用载波(dedicated carrier) 的UE。
在本发明实施例中，由于基站所配置的第一资源池和第二资源池相互正交，因此第一资源池和第二资源池之间不具备共享资源，从而使得基站向第一类型UE分配的资源和第二类型UE所自主选择的资源不会重合，从而避免了两种UE之间的资源碰撞。
应当注意的是，在图1所示的实施例中，步骤S101和步骤S102之间并没有先后顺序的限制。例如，可以先执行步骤S101，再执行步骤S102，反之亦然。当然，步骤S101和步骤S102也可以同时执行。
可选地，基站可以配置特定UE为所述第一类型UE或所述第二类型UE。
根据本发明实施例所提供的资源配置方法，可以将第一资源池和第二资源池配置为相互正交，从而使得第一资源池和第二资源池之间不具备共享资源，因此避免了第一类型UE和第二类型UE之间副链路传输过程中的资源碰撞。
以下，参照图2描述根据本发明另一个实施例的资源调度方法。图2示出了本发明另一个实施例的资源调度方法200的流程图，所述方法由基站执行。
如图2所示，在步骤S201中，向第一类型UE分配用于副链路传输的多个候选资源，其中所述第一类型UE通过基站调度进行副链路传输。
具体地，基站可以向第一类型UE为一个传输块(TB)或半永久性调度(SPS，Semi-Persistent Scheduling)的一次传输分配多个候选资源，这些所分配的候选资源可以选自用于第一类型UE的第一资源池和用于第二类型UE的第二资源池之间的共享资源的范围内。
在步骤S202中，向所述第一类型UE发送关于所述多个候选资源的调度信息，以使所述第一类型UE利用所述多个候选资源中的一个进行副链路传输。基站向第一类型UE所分配的多个候选资源可以通过物理层的信令进行发送，也可以通过数据链路层或网络层等高层信令进行发送。
当基站向第一类型UE通过物理层的信令分配多个候选资源时，可以通过多个下行控制信息(DCI)发送关于所述多个候选资源的调度信息，其中，每个DCI指示一个候选资源的调度信息，所述多个DCI可以分别处于连续多个时隙内。具体地，当基站为一次SPS分配多个候选资源时，可以通过加 扰具有相同车到车通信(V2V)SPS-RNTI的多个DCI发送调度信息。另外，基站也可以通过新的DCI设计来发送具有多个资源分配字段的DCI来对多个候选资源进行调度，其中每个字段指示一个候选资源的位置。
图3示出了本发明实施例中基站通过多个DCI发送关于所述多个候选资源的调度信息的具体发送方式的示意图。其中图3(a)示出了复用R-14的副链路调度时序(timeline)的DCI发送示意图。在图3(a)中，频分双工(FDD)模式下，下行链路第n个时隙(TTI)上所发送的DCI调度信息将调度与其具有固定时延的时隙上的资源，例如，在本发明一个示例中，第n个时隙的DCI调度信息可以调度第n+4个时隙上的资源。相应地，在时分双工(TDD)模式下，也可以采用与此类似的模式进行资源调度。从而当基站在一个时隙上通过多个DCI发送关于所述多个候选资源的调度信息时，第一类型UE将解码在同一个时隙内的多个DCI。
图3(b)示出了候选资源与指示此候选资源的DCI之间的时延为固定值时的DCI发送示意图。在本发明实施例中，用于指示候选资源的任一个下行控制信息与任一个候选资源之间的时延可以均大于最小要求值，这里的最小要求值可以为图3(a)中所提到的固定时隙值，例如4个时隙。在图3(b)中，候选资源与指示此候选资源的DCI之间的时延b+4中的b可以被预先配置为固定值。另外，根据图3(b)所示，还可以存在预设值a，使得在连续a个时隙内通过a个下行控制信息发送关于所述a个候选资源的调度信息，其中每个下行控制信息分别处于这连续a个时隙中的一个时隙内，在图3(b)中，a＝3。并且，可选地，最先调度的候选资源(n+4+b)和最后发送的DCI(n+a)之间的时延大于第一类型UE的处理时间，这样可以保证第一类型UE在接收到所有的DCI并处理完毕之后再利用基站调度的资源进行副链路传输。这里的a和b均可以由基站进行配置，可选地，a、b可以均为正整数，b≥a。根据图3(b)，频分双工(FDD)模式下，下行链路第n个时隙(TTI)上所发送的DCI调度信息将调度第(n+4)+b个时隙上的资源。另外，在时分双工(TDD)模式下，也可以采用与此类似的模式进行资源调度。
相应地，在第一类型UE侧，第一类型UE可以从其收到第一个加扰V2V SPS-RNTI的DCI开始，解码在预设值a内所有的DCI并且获得基站所分配的多个候选资源。另外，可选地，第一类型UE还可以通过在解码时获取 DCI上附加的传输指示符来获知多个候选资源是否传输完毕，当传输指示符指示传输完毕时，第一类型UE将把此前所有的DCI都当作是基站所分配的候选资源进行解码。例如，可以通过DCI上附加1比特的方式作为传输指示符以指示候选资源是否传输完毕，若DCI上附加的1比特传输指示符为1时，指示所分配的候选资源没有发送完毕；而若DCI上附加的1比特传输指示符为0时，则指示所分配的候选资源已经发送完毕，第一类型UE可以把此前所有的DCI发送的调度信息均作为候选资源进行处理。上述DCI的传输指示符的指示方法仅为示例，在实际应用中，可以采用任何方式来指示DCI是否发送完毕。在这种情况下，第一类型UE可以解码分别位于不同时隙内的多个DCI。
图3(c)示出了候选资源与指示此候选资源的DCI之间的时延为动态调整值时的DCI发送示意图。在本发明实施例中，用于指示候选资源的任一个下行控制信息与任一个候选资源之间的时延可以均大于最小要求值，这里的最小要求值可以为图3(a)中所提到的固定时隙值，例如4个时隙，在图3(c)中，候选资源与指示此候选资源的DCI之间的时延b+4中的b可以被动态调整。另外，根据图3(c)所示，还可以存在预设值a，使得在连续a个时隙内通过a个下行控制信息发送关于所述a个候选资源的调度信息，其中每个下行控制信息分别处于这连续a个时隙中的一个时隙内，在图3(c)中，a＝3。并且，可选地，最先调度的候选资源和最后发送的DCI(n+a)之间的时延可以大于第一类型UE的处理时间，这样可以保证第一类型UE在接收到所有的DCI并处理完毕之后再利用基站调度的资源进行副链路传输。这里的a和b均可以由基站进行配置，可选地，a、b可以均为正整数，b≥a。根据图3(c)，频分双工(FDD)模式下，下行链路第n个时隙(TTI)上所发送的DCI调度信息将调度第(n+4)+b个时隙上的资源。另外，在时分双工(TDD)模式下，也可以采用与此类似的模式进行资源调度。由于这里的b不是固定值，因此可以在基站下发的DCI上通过额外的时延指示信息(例如，时延指示符)来告知每个DCI上所配置的b的值的大小。例如，可以通过L个比特来指示b的值。当L为2时，可以令比特“00”指示b＝0的情况，比特“01”指示b＝1的情况，比特“10”指示b＝2的情况，比特“11”指示b＝3的情况。上述b值的时延指示方法仅为示例，在实际应用中，可以采用 任何方式来指示b值的不同大小。
相应地，在第一类型UE侧，第一类型UE可以从其收到第一个加扰V2V SPS-RNTI的DCI开始，解码在预设值a内所有的DCI并且获得基站所分配的多个候选资源。另外，可选地，第一类型UE还可以通过在解码时获取DCI上附加的传输指示符来获知多个候选资源是否传输完毕，当传输指示符指示传输完毕时，第一类型UE将把此前所有的DCI都当作是基站所分配的候选资源进行解码。例如，可以通过DCI上附加1比特的方式作为传输指示符以指示候选资源是否传输完毕，若DCI上附加的1比特传输指示符为1时，指示所分配的候选资源没有发送完毕；而若DCI上附加的1比特传输指示符为0时，则指示所分配的候选资源已经发送完毕，第一类型UE可以把此前所有的DCI发送的调度信息均作为候选资源进行处理。上述DCI的传输指示符的指示方法仅为示例，在实际应用中，可以采用任何方式来指示DCI是否发送完毕。在这种情况下，第一类型UE可以解码分别位于相同或不同时隙内的多个DCI。
以上参照图3说明了基站向第一类型UE所分配的多个候选资源通过物理层的信令进行传输的示例。在实际应用中，如前所述，基站所分配的多个候选资源还可以通过DL数据层或MAC CE层等高层信令进行传输，例如，可以利用加扰V2V SPS-RNTI的DCI指示包含指示副链路候选资源调度信息的物理下行共享信道(PDSCH)，以使第一类型UE通过对相应的信道上的信息进行解码而获得候选资源的调度信息。这一调度信息可以以位图(bit map)的模式或时频资源位置的模式来进行指示。
在本发明另一个实施例中，当基站在步骤S202向所述第一类型UE发送关于多个候选资源的调度信息之后，还可以包括图4所示的步骤S1和S2，以接收第一类型UE的反馈信息并根据反馈信息确定第一类型UE的副链路传输资源。图4示出本发明另一个实施例中资源调度方法的流程图，所述方法由基站执行。
如图4所示，在步骤S1中，接收所述第一类型UE关于所述多个候选资源的选择的反馈信息。可选地，所述反馈信息为第一类型UE选择的资源，或第一类型UE没有选择的资源。
在本发明一个实施例中，第一类型UE可以通过物理层信令或高层信令 来向基站反馈所选择的或不选择的资源信息。其中，当第一类型UE通过物理层信令进行反馈时，可以在指示所述选择和/或不选择的候选资源的下行控制信息所对应的反馈信息位置进行反馈。具体地，可以通过每个DCI所对应的反馈信息的位置上的确认/不确认(ACK/NACK)信令来进行反馈。当特定DCI对应的反馈信息的位置上的反馈信息为确认(ACK)时，代表可以选择这一DCI指示的候选资源；当特定DCI对应的反馈信息位置上的反馈信息为不确认(NACK)时，代表不选择这一DCI所指示的候选资源。另外，在本发明另一个实施例中，第一类型UE还可以通过高层信令来反馈信息。例如，可以通过复用上行链路调度请求机制来进行信令传输。再例如，可以在基站配置的物理上行共享信道(PUSCH)传输的同时进行信息反馈，其中，PUSCH可由基站在分配用于副链路传输的多个候选资源的时候，一同配置给第一类型UE。
在图4所示的步骤S2中，当基站接收到第一类型UE的反馈信息之后，可以根据所述第一类型UE的反馈信息，在所述多个候选资源中确定所述第一类型UE进行副链路传输的资源。可选地，基站可以根据某个第一类型UE的反馈信息，判断所述多个候选资源中哪些资源未被占用，从而可以将这些未被占用的资源调度给其他第一类型的UE。
在本发明另一个实施例中，第一类型UE可以根据进行副链路传输的信息类型决定是否要向基站发送反馈信息。其中，当第一类型UE进行副链路传输的信息为一次性信息时，第一类型UE可以不向基站发送反馈信息，并在基站调度的多个候选资源中自主选择进行副链路传输的资源。另外，可选地，当第一类型UE进行半永久性调度(SPS，Semi-Persistent Scheduling)传输时，由于通过在一次SPS中分配的资源可被周期性地使用(即，可被多次使用)，因此，不需要在每个传输时间间隔(Transmission Time Interval,TTI)都为UE下发下行控制信令(DCI)，从而降低了控制信令的开销。因此，此时第一类型UE可以向基站发送反馈信息，并由基站选择进行SPS传输的资源。第一类型UE是否向基站发送反馈信息可以由基站根据副链路传输的信息类型进行配置。
以上结合图2-图4说明了在本发明一个实施例中由基站执行的资源调度方法的流程图，在上述实施例中，第一类型UE的副链路传输资源由基站 调度，并且可以根据第一类型UE的反馈信息来最终确定。此外，在图2所示的本发明另一个实施例中，第一类型UE还可以根据基站分配的多个候选资源自主选择进行副链路传输的资源，以进行副链路传输。具体地，第一类型UE在解码获得DCI中指示的多个候选资源后，可以进行监听并从所有候选资源中自主选择干扰较小的资源来进行副链路传输。在本发明一个实施例中，第一类型UE可以根据接收信号强度指示(RSSI)测量来选择干扰最小的资源。在本发明另一个实施例中，第一类型UE可以检查资源分配(SA)中被占用的资源，并对被占用的资源进行参考信号接收功率(RSRP)的测量，由于被占用资源中接收功率较高的资源代表被近场用户占用，因此不能够选择这些资源，这些资源将被抛弃。因此，第一类型UE也可以通过预设阈值把接收功率超过阈值的候选资源进行抛弃。其中，可选地，当所有候选资源均不能选择时，第一类型UE可以通过提高阈值的方式进行资源的重新选择并进行副链路传输。可选地，第一类型UE也可以在所有未被抛弃的资源中随机选择资源进行副链路传输。另外，可选地，第一类型UE还可以根据RSRP的测量结果选择RSRP的测量值最小的资源进行副链路传输。上述候选资源的选择方式仅为示例，在实际应用中，可以采用任何资源选择的方式来选择资源进行副链路传输。
利用根据本发明上述方面的资源调度方法，能够有效地避免通过基站调度进行副链路传输的第一类型UE和自主进行副链路传输的第二类型UE之间的资源碰撞，提高了信息传输的效率，改善了用户体验。
以上参照图2说明了由基站执行的资源调度方法的流程图。相应地，下面将参照图5描述根据本发明一个实施例的由第一类型UE执行的资源调度方法。图5示出了本发明一个实施例的资源调度方法500的流程图，所述第一类型UE通过基站调度进行副链路传输。
如图5所示，在步骤S501中，接收基站分配的用于副链路传输的多个候选资源。
具体地，基站可以向第一类型UE为一个传输块(TB)或半永久性调度(SPS，Semi-Persistent Scheduling)分配多个候选资源，这些所分配的候选资源可以选自用于第一类型UE的第一资源池和用于第二类型UE的第二资源池之间的共享资源的范围内。
在本发明一个实施例中，基站可以向所述第一类型UE发送关于所述多个候选资源的调度信息。基站向第一类型UE所分配的多个候选资源可以通过物理层的信令进行发送，也可以通过数据链路层或网络层等高层信令进行发送。
其中，当基站向第一类型UE通过物理层的信令分配多个候选资源时，可以通过多个下行控制信息(DCI)发送关于所述多个候选资源的调度信息，其中，每个DCI指示一个候选资源的调度信息，所述多个DCI可以分别处于连续多个时隙内。具体地，当基站为一次SPS分配多个候选资源时，可以通过加扰具有相同车到车通信(V2V)SPS-RNTI的多个DCI发送调度信息。另外，基站也可以通过新的DCI设计来发送具有多个资源分配字段的DCI来对多个候选资源进行调度，其中每个字段指示一个候选资源的位置。
在实际应用中，如前所述，基站所分配的多个候选资源还可以通过DL数据层或MAC CE层等高层信令进行传输，例如，基站可以利用加扰V2V SPS-RNTI的DCI指示包含指示副链路候选资源调度信息的物理下行共享信道(PDSCH)，从而第一类型UE通过对相应的信道上的信息进行解码而获得候选资源的调度信息。这一调度信息可以以位图(bit map)的模式或时频资源位置的模式来进行指示。
在本发明一个实施例中，当接收基站分配的关于多个候选资源的调度信息之后，所述第一类型UE可以发送关于所述多个候选资源的选择的反馈信息。具体地，当第一类型UE解码获得DCI中指示的多个候选资源后，可以进行监听并从所有候选资源中选择干扰较小的资源来向基站进行反馈，以使基站接收第一类型UE关于所述多个候选资源的选择的反馈信息。在本发明一个实施例中，第一类型UE可以根据接收信号强度指示(RSSI)测量来选择干扰最小的资源。在本发明另一个实施例中，第一类型UE可以检查资源分配(SA)中被占用的资源，并对被占用的资源进行参考信号接收功率(RSRP)的测量，由于被占用资源中接收功率较高的资源代表被近场用户占用，因此不能够选择这些资源，这些资源将被抛弃。因此，第一类型UE也可以通过预设阈值把接收功率超过阈值的被抛弃的候选资源通过反馈信息向基站进行反馈。其中，可选地，当所有候选资源均不能选择时，可以通过提高阈值的方式进行资源的重新选择并向基站反馈。另外，可选地，第一类型UE也 可以在所有未被抛弃的资源中随机选择进行副链路传输的资源，并进行反馈。上述候选资源的选择方式仅为示例，在实际应用中，可以采用任何资源选择的方式来向基站反馈信息。
在本发明一个实施例中，第一类型UE可以通过物理层信令或高层信令来向基站反馈所选择的或不选择的资源信息。其中，当第一类型UE通过物理层信令进行反馈时，可以在指示所述选择和/或不选择的候选资源的下行控制信息所对应的反馈信息位置进行反馈，具体地，可以通过每个DCI所对应的反馈信息的位置上的确认/不确认信令来进行反馈。当特定DCI对应的反馈信息的位置上的反馈信息为确认时，代表可以选择这一DCI指示的候选资源；当特定DCI对应的反馈信息位置上的反馈信息为不确认时，代表不选择这一DCI所指示的候选资源。另外，在本发明另一个实施例中，第一类型UE还可以通过高层信令来反馈信息。例如，可以通过复用上行链路调度请求机制来进行信令传输，也可以在基站配置的物理上行共享信道(PUSCH)传输的同时进行信息反馈。
此外，在本发明另一个实施例中，第一类型UE可以根据进行副链路传输的信息类型决定是否要向基站发送反馈信息。其中，当第一类型UE进行副链路传输的信息为一次性信息时，第一类型UE可以不向基站发送反馈信息，并在基站调度的多个候选资源中自主选择进行副链路传输的资源。另外，可选地，当第一类型UE进行半永久性调度(SPS，Semi-Persistent Scheduling)传输时，可以向基站发送反馈信息，并由基站选择进行SPS传输的资源。第一类型UE是否向基站发送反馈信息可以由基站根据副链路传输的信息类型进行配置。
在步骤S502中，利用所述多个候选资源中的一个进行副链路传输。
具体地，当第一类型UE向基站发送反馈信息并且基站接收到之后，基站可以根据所述第一类型UE的反馈信息，在所述多个候选资源中确定所述第一类型UE进行副链路传输的资源，以使所述第一类型UE利用所述多个候选资源中的一个进行副链路传输。具体地，基站可以在第一类型UE所反馈的能够选择的候选资源中按照资源的干扰大小进行资源选择，也可以在除去第一类型UE反馈的不能选择的资源之外剩余的资源中随机进行资源选择。
在本发明另一个实施例中，可选地，第一类型UE还可以自主选择进行 副链路传输的资源。可选地，第一类型UE可以在基站分配的多个候选资源中自主选择进行副链路传输的资源，以进行副链路传输。具体地，第一类型UE在解码获得DCI中指示的多个候选资源后，可以进行监听并从所有候选资源中自主选择干扰较小的资源来进行副链路传输。在本发明一个实施例中，第一类型UE可以根据接收信号强度指示(RSSI)测量来选择干扰最小的资源。在本发明另一个实施例中，第一类型UE可以检查资源分配(SA)中被占用的资源，并对被占用的资源进行参考信号接收功率(RSRP)的测量，由于被占用资源中接收功率较高的资源代表被近场用户占用，因此不能够选择这些资源，这些资源将被抛弃。因此，第一类型UE也可以通过预设阈值把接收功率超过阈值的候选资源进行抛弃。其中，可选地，当所有候选资源均不能选择时，第一类型UE可以通过提高阈值的方式进行资源的重新选择并进行副链路传输。另外，可选地，第一类型UE也可以在所有未被抛弃的资源中随机选择资源进行副链路传输。上述候选资源的选择方式仅为示例，在实际应用中，可以采用任何资源选择的方式来选择资源进行副链路传输。
利用根据本发明上述方面的资源调度方法，能够有效地避免通过基站调度进行副链路传输的第一类型UE和自主进行副链路传输的第二类型UE之间的资源碰撞，提高了信息传输的效率，改善了用户体验。
以下，参照图6描述根据本发明另一个实施例的资源调度方法。图6示出了本发明另一个实施例的资源调度方法600的流程图，所述方法由第一类型UE执行，其中所述第一类型UE通过基站调度进行副链路传输。
如图6所示，在步骤S601中，接收基站分配的用于副链路传输的第一资源。其中，基站向第一类型UE分配的第一资源可以来自第一资源池和第二资源池的共享资源。
在步骤S602中，判断所述第一资源是否与第二类型UE进行副链路传输所使用的第二资源发生碰撞，其中所述第二类型UE自主进行副链路传输。
具体地，第一类型UE可以通过监听第一资源池和第二资源池之间的共享资源来判断基站所分配的第一资源是否被第二类型UE所使用的第二资源发生碰撞，其中，第一类型UE是否进行监听可由基站配置，或者第一类型UE可以默认始终监听。可选地，第一类型UE可以检查资源分配(SA)中的第一资源并进行参考信号接收功率(RSRP)的测量，当测量得到的功率 大于预设阈值时，可以认为基站所分配的第一资源被占据。另外，可选地，第一类型UE还可以通过估计平均RSSI是否大于预设阈值来判断所述第一资源是否被占据，例如，第一类型UE可以通过判断监听窗口内每100ms的平均RSSI是否超过预设阈值来判断第一资源的占据情况。在本发明的另一个实施例中，第一类型UE还可以综合考虑上述RSRP的测量和平均RSSI的测量结果来判断第一资源是否被占据。例如，第一类型UE可以参考第二类型UE进行自主资源选择，可选地，第一类型UE可以选择RSRP小于某个预设阈值的资源，测量这些资源上的RSSI，并按照RSSI大小进行资源排序。随后，第一类型UE可以选择例如RSSI较低的预设数量或者预设百分比的资源，并把这些资源看作是可选的资源。从而，当基站所分配给此第一类型UE的第一资源和这些可选资源重合时，则所述第一类型UE认为基站分配的第一资源为可用资源；反之，当基站分配的第一资源不在这些可选资源的范围内时，第一类型UE认为第一资源已被占据。
在步骤S603中，当所述第一资源与所述第二资源发生碰撞时，发送碰撞指示信息。可选地，所述第一类型UE可以向所述基站发送所述碰撞指示信息，以使所述基站对所述第一类型UE进行副链路传输的资源进行重新分配。另外，可选地，所述第一类型UE还可以向所述第二类型UE发送碰撞指示信息，以使所述第二类型UE重新选择副链路传输的资源。
具体地，所述第一类型UE可以通过物理层信令或高层信令来向基站反馈所选择的或不选择的资源信息。其中，当第一类型UE通过物理层信令进行反馈时，可以在指示所述选择和/或不选择的第一资源的下行控制信息所对应的反馈信息位置进行反馈，具体地，可以通过此DCI所对应的反馈信息的位置上的确认/不确认信令来进行反馈。当特定DCI对应的反馈信息的位置上的反馈信息为确认时，代表可以选择这一DCI指示的第一资源；当特定DCI对应的反馈信息位置上的反馈信息为不确认时，代表不选择这一DCI所指示的第一资源。
另外，在本发明另一个实施例中，第一类型UE还可以通过高层信令来反馈信息。例如，可以通过复用上行链路调度请求机制来进行信令传输，也可以在基站配置的物理上行共享信道(PUSCH)传输的同时进行信息反馈。具体地，所述碰撞指示信息的内容可以包括以下的一个或多个：指示分配的 第一资源是否碰撞、SA分配资源的RSRP测量、RSSI测量值、SA分配的相同资源的预留周期、根据第一类型UE监听结果得到的推荐资源位置等。
在本发明一个实施例中，第一类型UE可以根据进行副链路传输的信息类型决定是否要发送碰撞指示信息。其中，当第一类型UE进行副链路传输的信息为一次性信息时，第一类型UE可以不发送碰撞指示信息，并自主选择进行副链路传输的资源。另外，可选地，当第一类型UE进行SPS传输时，第一类型UE可以向基站或第二类型UE发送碰撞指示信息，并由基站选择进行SPS传输的资源或使得第二类型UE重新选择其进行副链路传输的资源。第一类型UE是否发送碰撞指示信息可以由基站根据副链路传输的信息类型进行配置。
以上参照图6的资源调度方法具体说明了当基站给第一类型UE分配的资源已经与第二类型UE占用的资源发生碰撞时，如何规避碰撞的发生，并进行资源重选。在本发明的另一个实施例中，第一类型UE还可以在碰撞之前采用主动向基站报告资源占据的方式，以使基站在资源分配时避免向第一类型UE分配可能会产生碰撞的资源，从而避免碰撞的产生。具体地，第一类型UE可以通过不断的资源监听主动向基站报告资源占据情况。其中，第一类型UE的监听可以由基站预先配置。第一类型UE向基站发送的资源占据报告可以通过高层信令周期性或非周期性地进行上报，例如，第一类型UE可以将资源占据报告与其位置信息一同周期性上报，也可以根据基站的要求随时进行上报。在本发明另一个实施例中，资源占据报告还可以通过路边节点(RSU)进行监听和汇报。可选地，第一类型UE和/或RSU所上报的资源占据报告均可以包括以下的一个或多个：RSRP测量、RSSI测量值、SA分配资源的预留周期、根据第一类型UE和/或RSU的监听结果得到的推荐资源位置等。在本发明一个实施例中，所述第一类型UE和/或RSU的资源占据报告包括其监听窗口中的一个特定子集(subset)或覆盖其监听的所有时频资源，报告的具体范围可以根据基站的配置来确定。在本发明另一个实施例中，当资源碰撞已经发生时，资源占据报告可以与前述的碰撞指示信息共同上报，以使基站对第一类型UE使用的第一资源进行重新配置。
利用根据本发明上述方面的资源调度方法，能够有效地避免通过基站调度进行副链路传输的第一类型UE和自主进行副链路传输的第二类型UE之 间的资源碰撞，提高了信息传输的效率，改善了用户体验。
以下，参照图7描述根据本发明一个实施例的资源调度方法。图7示出了本发明一个实施例的资源调度方法700的流程图，所述方法由第一类型UE执行，其中所述第一类型UE通过基站调度进行副链路传输。
如图7所示，在步骤S701中，接收基站分配的用于副链路传输的第一资源。其中，基站向第一类型UE分配的第一资源可以来自第一资源池和第二资源池的共享资源。
在步骤S702中，判断所述第一资源是否与第二类型UE进行副链路传输所使用的第二资源发生碰撞，其中所述第二类型UE自主进行副链路传输。
具体地，第一类型UE可以通过监听第一资源池和第二资源池之间的共享资源来判断基站所分配的第一资源是否被第二类型UE所使用的第二资源发生碰撞。可选地，第一类型UE可以检查资源分配(SA)中的第一资源并进行参考信号接收功率(RSRP)的测量，当测量得到的功率大于预设阈值时，可以认为基站所分配的第一资源被占据。另外，可选地，第一类型UE还可以通过估计平均RSSI是否大于预设阈值来判断所述第一资源是否被占据，例如，第一类型UE可以通过判断监听窗口内每100ms的平均RSSI是否超过预设阈值来判断第一资源的占据情况。在本发明的另一个实施例中，第一类型UE还可以综合考虑上述RSRP的测量和平均RSSI的测量结果来判断第一资源是否被占据。
在步骤S703中，当所述第一资源与所述第二资源发生碰撞时，所述第一类型UE自主选择与所述第二资源不同的第三资源进行副链路传输。
具体地，第一类型UE可以自主选择进行副链路传输的资源，以进行副链路传输。具体地，第一类型UE可以进行资源监听并从多个可选资源中自主选择干扰较小的资源来进行副链路传输。在本发明一个实施例中，第一类型UE可以根据接收信号强度指示(RSSI)测量来选择干扰最小的资源。在本发明另一个实施例中，第一类型UE还可以检查资源分配(SA)中被占用的资源，并对进行参考信号接收功率(RSRP)的测量来决定不能够选择的资源并抛弃，随后从所有未被抛弃的资源中随机选择资源进行副链路传输。上述候选资源的选择方式仅为示例，在实际应用中，可以采用任何资源选择的方式来选择资源进行副链路传输。可选地，第一类型UE可以向基站发送 其自主选择的用于副链路传输的所述第三资源。
在本发明一个实施例中，第一类型UE可能使用第三资源进行一段时间的副链路传输，并在满足某个或某些条件时停止使用第三资源进行副链路传输，其中，所述条件可以包括：当使用所述第三资源完成一个传输块的传输时，停止使用所述第三资源进行副链路传输；当半永久性调度SPS的自主资源重选被触发时，停止使用所述第三资源进行副链路传输；当满足预设时间或周期时，停止使用所述第三资源进行副链路传输；和/或当UE再次接到基站新的调度资源时，停止使用所述第三资源进行副链路传输。可选地，当第一类型UE停止使用第三资源进行副链路传输后，可以重新采用基站调度的方式进行副链路传输。
在本发明一个实施例中，所述第三资源选自第二资源池中，所述第二资源池与第一资源池相关联，其中所述第一资源池用于副链路传输模式下的第一类型UE的信息传输，所述第二资源池用于副链路传输模式下的第二类型UE的信息传输。其中，所述第二资源池与所述第一资源池的关联可以由基站配置。例如，当第一资源池有多个，且第二资源池也有多个时，某个第一资源池可以与一个或多个第二资源池具有关联，可选地，各个第一资源池也可以与各个第二资源池一一对应。
在本发明一个实施例中，可以使用基站配置的半永久性调度的参数进行所述第三资源的自主选择和副链路传输。
在本发明另一个实施例中，第一类型UE还可以向基站发送调度放弃报告，所述调度放弃报告指示所述第一类型UE放弃所述基站调度的所述第一资源。所述调度放弃报告可以通过物理层、数据链路层或网络层等低层或高层信令来发送调度放弃报告。
利用根据本发明上述方面的资源调度方法，能够有效地避免通过基站调度进行副链路传输的第一类型UE和自主进行副链路传输的第二类型UE之间的资源碰撞，提高了信息传输的效率，改善了用户体验。
以上参照图6说明了根据本发明一个实施例的由第一类型UE执行的资源调度方法。其中，在步骤S603中，当第一类型UE所发送的碰撞指示信息发送至第二类型UE时，可以促使第二类型UE进行资源重选来避免碰撞的发生。相应地，以下将参照图8描述根据本发明一个实施例的由第二类型 UE执行的资源调度方法。图8示出了本发明一个实施例的资源调度方法800的流程图，其中所述第二类型UE自主进行副链路传输。
如图8所示，在步骤S801中，接收第一类型UE发送的碰撞指示信息，其中所述第一类型UE通过基站调度通过第一资源进行副链路传输，所述碰撞指示信息指示所述第一资源与所述第二类型UE进行副链路传输所使用的第二资源发生碰撞。
可选地，基站向第一类型UE分配的第一资源可以来自第一资源池和第二资源池的共享资源。第一类型UE可以通过监听第一资源池和第二资源池之间的共享资源来判断基站所分配的第一资源是否被第二类型UE所使用的第二资源发生碰撞。可选地，第一类型UE可以检查资源分配(SA)中的第一资源并进行参考信号接收功率(RSRP)的测量，当测量得到的功率大于预设阈值时，可以认为基站所分配的第一资源被占据。另外，可选地，第一类型UE还可以通过估计平均RSSI是否大于预设阈值来判断所述第一资源是否被占据，例如，第一类型UE可以通过判断监听窗口内每100ms的平均RSSI是否超过预设阈值来判断第一资源的占据情况。在本发明的另一个实施例中，第一类型UE还可以综合考虑上述RSRP的测量和平均RSSI的测量结果来判断第一资源是否被占据。当所述第一资源与所述第二资源发生碰撞时，第一类型UE将向第二类型UE发送碰撞指示信息。
具体地，碰撞指示信息可以为第一类型UE向第二类型UE发送的一次性SA消息，所述SA消息可以在第一传输块传输的之前或之后。所述SA消息可以包括信令识别标志，所述信令识别标志可以为1比特位，例如，当这一比特位为1时，可以指示第二类型UE进行资源重选，而当这一比特位为0时，第二类型UE无需进行资源重选。此外，SA消息还可以包括传统的SA消息中的内容，例如，SA消息可以包括如下内容的一个或多个：优先级、资源预留、频率资源分配(指示第一类型UE资源的频域位置)、初始传输和重传之间的时间间隔(指示第一类型UE资源的时域位置)、MCS、重发指数、保留位。
在本发明一个实施例中，第一类型UE可以根据进行副链路传输的信息类型决定是否要发送碰撞指示信息。其中，当第一类型UE进行副链路传输的信息为一次性信息时，第一类型UE可以不发送碰撞指示信息，并自主选 择进行副链路传输的资源。另外，可选地，当第一类型UE进行SPS传输时，第一类型UE可以向第二类型UE发送碰撞指示信息，并使得第二类型UE重新选择其进行副链路传输的资源。第一类型UE是否发送碰撞指示信息可以由基站根据副链路传输的信息类型进行配置。
在步骤S802中，重新选择副链路传输的资源。
当第二类型UE接收到第一类型UE所发送的碰撞指示信息之后，可以在分配给其的第二资源池中进行自主选择，以改变其进行副链路传输的资源。
利用根据本发明上述方面的资源调度方法，能够有效地避免通过基站调度进行副链路传输的第一类型UE和自主进行副链路传输的第二类型UE之间的资源碰撞，提高了信息传输的效率，改善了用户体验。
下面，参照图9来描述根据本发明一个实施例的基站。图9是示出了根据本发明一个实施例的基站900的框图。如图9所示，基站900包括第一配置单元910和第二配置单元920。除了这2个单元以外，基站900还可以包括其他部件，然而，由于这些部件与本发明实施例的内容无关，因此在这里省略其图示和描述。此外，由于根据本发明实施例的基站900执行的下述操作的具体细节与在上文中参照图1描述的细节相同，因此在这里为了避免重复而省略对相同细节的重复描述。
如图9所示，第一配置单元910配置第一资源池，所述第一资源池用于副链路传输模式下的第一类型UE的信息传输，其中所述第一类型UE通过基站调度进行副链路传输。如前所述，第一类型UE为PC5接口模式3在范围内的UE，其副链路信息传输的资源由基站进行调度，可选地，第一类型UE可以为处于无线资源控制(RRC)连接状态的UE。
第二配置单元920配置第二资源池，所述第二资源池用于副链路传输模式下的第二类型UE的信息传输，其中所述第二类型UE自主进行副链路传输，所述第一资源池和所述第二资源池相互正交。同样如前所述，第二类型UE为PC5接口模式4的在范围内的UE，其副链路信息传输的资源由第二类型UE自主进行分配，可选地，第二类型UE可以为处于RRC空闲(idle)状态的UE和/或使用车到特定目标的通信(V2X)专用载波(dedicated carrier)的UE。
在本发明实施例中，由于基站900所配置的第一资源池和第二资源池相 互正交，因此第一资源池和第二资源池之间不具备共享资源，从而使得基站向第一类型UE分配的资源和第二类型UE所自主选择的资源不会重合，从而避免了两种UE之间的资源碰撞。
可选地，基站900可以配置特定UE为所述第一类型UE或所述第二类型UE。
根据本发明实施例所提供的基站，可以将第一资源池和第二资源池配置为相互正交，从而使得第一资源池和第二资源池之间不具备共享资源，因此避免了第一类型UE和第二类型UE之间副链路传输过程中的资源碰撞。
下面，参照图10来描述根据本发明另一个实施例的基站。图10是示出了根据本发明一个实施例的基站1000的框图。如图10所示，基站1000包括分配单元1010和发送单元1020。除了这2个单元以外，基站1000还可以包括其他部件，然而，由于这些部件与本发明实施例的内容无关，因此在这里省略其图示和描述。此外，由于根据本发明实施例的基站1000执行的下述操作的具体细节与在上文中参照图2-4描述的细节相同，因此在这里为了避免重复而省略对相同细节的重复描述。
如图10所示，分配单元1010向第一类型UE分配用于副链路传输的多个候选资源，其中所述第一类型UE通过基站调度进行副链路传输。
具体地，分配单元1010可以向第一类型UE为一个传输块(TB)或半永久性调度(SPS，Semi-Persistent Scheduling)的一次传输分配多个候选资源，这些所分配的候选资源可以选自用于第一类型UE的第一资源池和用于第二类型UE的第二资源池之间的共享资源的范围内。
发送单元1020向所述第一类型UE发送关于所述多个候选资源的调度信息，以使所述第一类型UE利用所述多个候选资源中的一个进行副链路传输。发送单元1020向第一类型UE所分配的多个候选资源可以通过物理层的信令进行发送，也可以通过数据链路层或网络层等高层信令进行发送。
当发送单元1020向第一类型UE通过物理层的信令分配多个候选资源时，可以通过多个下行控制信息(DCI)发送关于所述多个候选资源的调度信息，其中，每个DCI指示一个候选资源的调度信息，所述多个DCI可以分别处于连续多个时隙内。具体地，当分配单元1010为一次SPS分配多个候选资源时，发送单元1020可以通过加扰具有相同车到车通信(V2V) SPS-RNTI的多个DCI发送调度信息。另外，发送单元1020也可以通过新的DCI设计来发送具有多个资源分配字段的DCI来对多个候选资源进行调度，其中每个字段指示一个候选资源的位置。
图3示出了本发明实施例中发送单元1020通过多个DCI发送关于所述多个候选资源的调度信息的具体发送方式的示意图。其中图3(a)示出了复用R-14的副链路调度时序(timeline)的DCI发送示意图。在图3(a)中，频分双工(FDD)模式下，下行链路第n个时隙(TTI)上所发送的DCI调度信息将调度与其具有固定时延的时隙上的资源，例如，在本发明一个示例中，第n个时隙的DCI调度信息可以调度第n+4个时隙上的资源。相应地，在时分双工(TDD)模式下，也可以采用与此类似的模式进行资源调度。从而当基站在一个时隙上通过多个DCI发送关于所述多个候选资源的调度信息时，第一类型UE将解码在同一个时隙内的多个DCI。
图3(b)示出了候选资源与指示此候选资源的DCI之间的时延为固定值时的DCI发送示意图。在本发明实施例中，用于指示候选资源的任一个下行控制信息与任一个候选资源之间的时延可以均大于最小要求值，这里的最小要求值可以为图3(a)中所提到的固定时隙值，例如4个时隙。在图3(b)中，候选资源与指示此候选资源的DCI之间的时延b+4中的b可以被预先配置为固定值。另外，根据图3(b)所示，还可以存在预设值a，使得在连续a个时隙内通过a个下行控制信息发送关于所述a个候选资源的调度信息，其中每个下行控制信息分别处于这连续a个时隙中的一个时隙内。并且，可选地，最先调度的候选资源(n+4+b)和最后发送的DCI(n+a)之间的时延大于第一类型UE的处理时间，这样可以保证第一类型UE在接收到所有的DCI并处理完毕之后再利用基站调度的资源进行副链路传输。这里的a和b均可以由基站进行配置，可选地，a、b可以均为正整数，b≥a。根据图3(b)，频分双工(FDD)模式下，下行链路第n个时隙(TTI)上所发送的DCI调度信息将调度第(n+4)+b个时隙上的资源。另外，在时分双工(TDD)模式下，也可以采用与此类似的模式进行资源调度。
相应地，在第一类型UE侧，第一类型UE可以从其收到第一个加扰V2V SPS-RNTI的DCI开始，解码在预设值a内所有的DCI并且获得基站所分配的多个候选资源。另外，可选地，第一类型UE还可以通过在解码时获取 DCI上附加的传输指示符来获知多个候选资源是否传输完毕，当传输指示符指示传输完毕时，第一类型UE将把此前所有的DCI都当作是基站所分配的候选资源进行解码。例如，可以通过DCI上附加1比特的方式作为传输指示符以指示候选资源是否传输完毕，若DCI上附加的1比特传输指示符为1时，指示所分配的候选资源没有发送完毕；而若DCI上附加的1比特传输指示符为0时，则指示所分配的候选资源已经发送完毕，第一类型UE可以把此前所有的DCI发送的调度信息均作为候选资源进行处理。上述DCI的传输指示符的指示方法仅为示例，在实际应用中，可以采用任何方式来指示DCI是否发送完毕。在这种情况下，第一类型UE可以解码分别位于不同时隙内的多个DCI。
图3(c)示出了候选资源与指示此候选资源的DCI之间的时延为动态调整值时的DCI发送示意图。在本发明实施例中，用于指示候选资源的任一个下行控制信息与任一个候选资源之间的时延可以均大于最小要求值，这里的最小要求值可以为图3(a)中所提到的固定时隙值，例如4个时隙，在图3(c)中，候选资源与指示此候选资源的DCI之间的时延b+4中的b可以被动态调整。另外，根据图3(c)所示，还可以存在预设值a，使得在连续a个时隙内通过a个下行控制信息发送关于所述a个候选资源的调度信息，其中每个下行控制信息分别处于这连续a个时隙中的一个时隙内。并且，可选地，最先调度的候选资源和最后发送的DCI(n+a)之间的时延可以大于第一类型UE的处理时间，这样可以保证第一类型UE在接收到所有的DCI并处理完毕之后再利用基站调度的资源进行副链路传输。这里的a和b均可以由基站进行配置，可选地，a、b可以均为正整数，b≥a。根据图3(c)，频分双工(FDD)模式下，下行链路第n个时隙(TTI)上所发送的DCI调度信息将调度第(n+4)+b个时隙上的资源。另外，在时分双工(TDD)模式下，也可以采用与此类似的模式进行资源调度。由于这里的b不是固定值，因此可以在基站下发的DCI上通过额外的时延指示信息(例如，时延指示符)来告知每个DCI上所配置的b的值的大小。例如，可以通过L个比特来指示b的值。当L为2时，可以令比特“00”指示b＝0的情况，比特“01”指示b＝1的情况，比特“10”指示b＝2的情况，比特“11”指示b＝3的情况。上述b值的时延指示方法仅为示例，在实际应用中，可以采用任何方式来指 示b值的不同大小。
相应地，在第一类型UE侧，第一类型UE可以从其收到第一个加扰V2V SPS-RNTI的DCI开始，解码在预设值a内所有的DCI并且获得基站所分配的多个候选资源。另外，可选地，第一类型UE还可以通过在解码时获取DCI上附加的传输指示符来获知多个候选资源是否传输完毕，当传输指示符指示传输完毕时，第一类型UE将把此前所有的DCI都当作是基站所分配的候选资源进行解码。例如，可以通过DCI上附加1比特的方式作为传输指示符以指示候选资源是否传输完毕，若DCI上附加的1比特传输指示符为1时，指示所分配的候选资源没有发送完毕；而若DCI上附加的1比特传输指示符为0时，则指示所分配的候选资源已经发送完毕，第一类型UE可以把此前所有的DCI发送的调度信息均作为候选资源进行处理。上述DCI的传输指示符的指示方法仅为示例，在实际应用中，可以采用任何方式来指示DCI是否发送完毕。在这种情况下，第一类型UE可以解码分别位于相同或不同时隙内的多个DCI。
以上参照图3说明了发送单元1020向第一类型UE所分配的多个候选资源通过物理层的信令进行发送的示例。在实际应用中，如前所述，多个候选资源还可以通过DL数据层或MAC CE层等高层信令进行发送，例如，可以利用加扰V2V SPS-RNTI的DCI指示包含指示副链路候选资源调度信息的物理下行共享信道(PDSCH)进行发送，以使第一类型UE通过对相应的信道上的信息进行解码而获得候选资源的调度信息。这一调度信息可以以位图(bit map)的模式或时频资源位置的模式来进行指示。
在本发明另一个实施例中，当发送单元1020向所述第一类型UE发送关于多个候选资源的调度信息之后，基站1000还可以包括接收单元(未示出)，以接收所述第一类型UE关于所述多个候选资源的选择的反馈信息。可选地，所述反馈信息为第一类型UE选择的资源，或第一类型UE没有选择的资源。
在本发明一个实施例中，第一类型UE可以通过物理层信令或高层信令来向基站1000反馈所选择的或不选择的资源信息。其中，当第一类型UE通过物理层信令进行反馈时，可以在指示所述选择和/或不选择的候选资源的下行控制信息所对应的反馈信息位置进行反馈，具体地，可以通过每个DCI 所对应的反馈信息的位置上的确认/不确认信令来进行反馈。当特定DCI对应的反馈信息的位置上的反馈信息为确认时，代表可以选择这一DCI指示的候选资源；当特定DCI对应的反馈信息位置上的反馈信息为不确认时，代表不选择这一DCI所指示的候选资源。另外，在本发明另一个实施例中，第一类型UE还可以通过高层信令来反馈信息。例如，可以通过复用上行链路调度请求机制来进行信令传输。再例如，可以在基站配置的物理上行共享信道(PUSCH)传输的同时进行信息反馈，其中，PUSCH可由基站在分配用于副链路传输的多个候选资源的时候，一同配置给第一类型UE。
当基站1000接收到第一类型UE的反馈信息之后，发送单元1020还可以根据所述第一类型UE的反馈信息，在所述多个候选资源中确定所述第一类型UE进行副链路传输的资源并进行发送。可选地，基站可以根据某个第一类型UE的反馈信息，判断所述多个候选资源中哪些资源未被占用，从而可以将这些未被占用的资源调度给其他第一类型的UE。
在本发明一个实施例中，第一类型UE可以根据进行副链路传输的信息类型决定是否要向基站发送反馈信息。其中，当第一类型UE进行副链路传输的信息为一次性信息时，第一类型UE可以不向基站发送反馈信息，并在基站调度的多个候选资源中自主选择进行副链路传输的资源。另外，可选地，当第一类型UE进行半永久性调度(SPS，Semi-Persistent Scheduling)传输时，由于通过在一次SPS中分配的资源可被周期性地使用(即，可被多次使用)，因此，不需要在每个传输时间间隔(Transmission Time Interval,TTI)都为UE下发下行控制信令(DCI)，从而降低了控制信令的开销。因此，此时第一类型UE可以向基站发送反馈信息，并由基站选择进行SPS传输的资源。第一类型UE是否向基站发送反馈信息可以由基站根据副链路传输的信息类型进行配置。
在本发明另一个实施例中，可选地，第一类型UE还可以根据基站分配的多个候选资源自主选择进行副链路传输的资源，以进行副链路传输。具体地，第一类型UE在解码获得DCI中指示的多个候选资源后，可以进行监听并从所有候选资源中自主选择干扰较小的资源来进行副链路传输。在本发明一个实施例中，第一类型UE可以根据接收信号强度指示(RSSI)测量来选择干扰最小的资源。在本发明另一个实施例中，第一类型UE可以检查资源 分配(SA)中被占用的资源，并对被占用的资源进行参考信号接收功率(RSRP)的测量，由于被占用资源中接收功率较高的资源代表被近场用户占用，因此不能够选择这些资源，这些资源将被抛弃。因此，第一类型UE也可以通过预设阈值把接收功率超过阈值的候选资源进行抛弃。其中，可选地，当所有候选资源均不能选择时，第一类型UE可以通过提高阈值的方式进行资源的重新选择并进行副链路传输。可选地，第一类型UE也可以在所有未被抛弃的资源中随机选择资源进行副链路传输。另外，可选地，第一类型UE还可以根据RSRP的测量结果选择RSRP的测量值最小的资源进行副链路传输。上述候选资源的选择方式仅为示例，在实际应用中，可以采用任何资源选择的方式来选择资源进行副链路传输。
利用根据本发明上述方面的基站，能够有效地避免通过基站调度进行副链路传输的第一类型UE和自主进行副链路传输的第二类型UE之间的资源碰撞，提高了信息传输的效率，改善了用户体验。
以上参照图10说明了本发明实施例基站1000的框图。相应地，下面将参照图11来描述根据本发明一个实施例的UE。图11是示出了根据本发明一个实施例的UE 1100的框图，所述UE 1100为第一类型UE，所述第一类型UE通过基站调度进行副链路传输。如图11所示，UE 1100包括接收单元1110和传输单元1120。除了这2个单元以外，UE 1100还可以包括其他部件，然而，由于这些部件与本发明实施例的内容无关，因此在这里省略其图示和描述。此外，由于根据本发明实施例的UE 1100执行的下述操作的具体细节与在上文中参照图5描述的细节相同，因此在这里为了避免重复而省略对相同细节的重复描述。
如图11所示，接收单元1110接收基站分配的用于副链路传输的多个候选资源。
具体地，基站可以向第一类型UE为一个传输块(TB)或半永久性调度(SPS，Semi-Persistent Scheduling)分配多个候选资源，这些所分配的候选资源可以选自用于第一类型UE的第一资源池和用于第二类型UE的第二资源池之间的共享资源的范围内。
在本发明一个实施例中，基站可以向所述第一类型UE发送关于所述多个候选资源的调度信息。基站向第一类型UE所分配的多个候选资源可以通 过物理层的信令进行发送，也可以通过数据链路层或网络层等高层信令进行发送。
另外，在实际应用中，如前所述，基站所分配的多个候选资源还可以通过DL数据层或MAC CE层等高层信令进行传输，例如，基站可以利用加扰V2V SPS-RNTI的DCI指示包含指示副链路候选资源调度信息的物理下行共享信道(PDSCH)，从而第一类型UE通过对相应的信道上的信息进行解码而获得候选资源的调度信息。这一调度信息可以以位图(bit map)的模式或时频资源位置的模式来进行指示。
在本发明一个实施例中，当接收单元1110接收基站分配的关于多个候选资源的调度信息之后，所述第一类型UE 1100可以发送关于所述多个候选资源的选择的反馈信息。具体地，当第一类型UE解码获得DCI中指示的多个候选资源后，可以进行监听并从所有候选资源中选择干扰较小的资源来向基站进行反馈，以使基站接收第一类型UE关于所述多个候选资源的选择的反馈信息。在本发明一个实施例中，第一类型UE可以根据接收信号强度指示(RSSI)测量来选择干扰最小的资源。在本发明另一个实施例中，第一类型UE可以检查资源分配(SA)中被占用的资源，并对被占用的资源进行参考信号接收功率(RSRP)的测量，由于被占用资源中接收功率较高的资源代表被近场用户占用，因此不能够选择这些资源，这些资源将被抛弃。因此，第一类型UE也可以通过预设阈值把接收功率超过阈值的被抛弃的候选资源通过反馈信息向基站进行反馈。其中，可选地，当所有候选资源均不能选择时，可以通过提高阈值的方式进行资源的重新选择并向基站反馈。另外，可选地，第一类型UE也可以在所有未被抛弃的资源中随机选择进行副链路传输的资源，并进行反馈。上述候选资源的选择方式仅为示例，在实际应用中，可以采用任何资源选择的方式来向基站反馈信息。
在本发明一个实施例中，第一类型UE 1100可以通过物理层信令或高层信令来向基站反馈所选择的或不选择的资源信息。其中，当第一类型UE通过物理层信令进行反馈时，可以在指示所述选择和/或不选择的候选资源的下行控制信息所对应的反馈信息位置进行反馈，具体地，可以通过每个DCI所对应的反馈信息的位置上的确认/不确认信令来进行反馈。当特定DCI对应的反馈信息的位置上的反馈信息为确认时，代表可以选择这一DCI指示的 候选资源；当特定DCI对应的反馈信息位置上的反馈信息为不确认时，代表不选择这一DCI所指示的候选资源。另外，在本发明另一个实施例中，第一类型UE还可以通过高层信令来反馈信息。例如，可以通过复用上行链路调度请求机制来进行信令传输，也可以在基站配置的物理上行共享信道(PUSCH)传输的同时进行信息反馈。
此外，在本发明另一个实施例中，第一类型UE 1100可以根据进行副链路传输的信息类型决定是否要向基站发送反馈信息。其中，当第一类型UE进行副链路传输的信息为一次性信息时，第一类型UE可以不向基站发送反馈信息，并在基站调度的多个候选资源中自主选择进行副链路传输的资源。另外，可选地，当第一类型UE进行半永久性调度(SPS，Semi-Persistent Scheduling)传输时，可以向基站发送反馈信息，并由基站选择进行SPS传输的资源。第一类型UE是否向基站发送反馈信息可以由基站根据副链路传输的信息类型进行配置。
传输单元1120利用所述多个候选资源中的一个进行副链路传输。
具体地，当基站接收到第一类型UE 1100的反馈信息之后，可以根据所述第一类型UE的反馈信息，在所述多个候选资源中确定所述第一类型UE进行副链路传输的资源，以使所述第一类型UE 1100的传输单元1120利用所述多个候选资源中的一个进行副链路传输。具体地，基站可以在第一类型UE所反馈的能够选择的候选资源中按照资源的干扰大小进行资源选择，也可以在除去第一类型UE反馈的不能选择的资源之外剩余的资源中随机进行资源选择。
在本发明另一个实施例中，可选地，第一类型UE 1100还可以自主选择进行副链路传输的资源。可选地，第一类型UE可以在基站分配的多个候选资源中自主选择进行副链路传输的资源，以利用传输单元1120进行副链路传输。具体地，第一类型UE在解码获得DCI中指示的多个候选资源后，可以进行监听并从所有候选资源中自主选择干扰较小的资源来进行副链路传输。在本发明一个实施例中，第一类型UE可以根据接收信号强度指示(RSSI)测量来选择干扰最小的资源。在本发明另一个实施例中，第一类型UE可以检查资源分配(SA)中被占用的资源，并对被占用的资源进行参考信号接收功率(RSRP)的测量，由于被占用资源中接收功率较高的资源代表被近场 用户占用，因此不能够选择这些资源，这些资源将被抛弃。因此，第一类型UE也可以通过预设阈值把接收功率超过阈值的候选资源进行抛弃。其中，可选地，当所有候选资源均不能选择时，第一类型UE可以通过提高阈值的方式进行资源的重新选择并进行副链路传输。另外，可选地，第一类型UE也可以在所有未被抛弃的资源中随机选择资源进行副链路传输。上述候选资源的选择方式仅为示例，在实际应用中，可以采用任何资源选择的方式来选择资源进行副链路传输。
利用根据本发明上述方面的UE，能够有效地避免通过基站调度进行副链路传输的第一类型UE和自主进行副链路传输的第二类型UE之间的资源碰撞，提高了信息传输的效率，改善了用户体验。
下面，参照图12来描述根据本发明另一个实施例的UE。图12是示出了根据本发明另一个实施例的UE 1200的框图，所述UE 1200为第一类型UE，所述第一类型UE通过基站调度进行副链路传输。如图12所示，UE 1200包括接收单元1210、判断单元1220和发送单元1230。除了这3个单元以外，UE 1200还可以包括其他部件，然而，由于这些部件与本发明实施例的内容无关，因此在这里省略其图示和描述。此外，由于根据本发明实施例的UE1200执行的下述操作的具体细节与在上文中参照图6描述的细节相同，因此在这里为了避免重复而省略对相同细节的重复描述。
如图12所示，接收单元1210接收基站分配的用于副链路传输的第一资源。其中，基站向第一类型UE分配的第一资源可以来自第一资源池和第二资源池的共享资源。
判断单元1220判断所述第一资源是否与第二类型UE进行副链路传输所使用的第二资源发生碰撞，其中所述第二类型UE自主进行副链路传输。
具体地，判断单元1220可以通过监听第一资源池和第二资源池之间的共享资源来判断基站所分配的第一资源是否被第二类型UE所使用的第二资源发生碰撞，其中，第一类型UE是否进行监听可由基站配置，或者第一类型UE可以默认始终监听。可选地，判断单元1220可以检查资源分配(SA)中的第一资源并进行参考信号接收功率(RSRP)的测量，当测量得到的功率大于预设阈值时，可以认为基站所分配的第一资源被占据。另外，可选地，第一类型UE还可以通过估计平均RSSI是否大于预设阈值来判断所述第一 资源是否被占据，例如，第一类型UE可以通过判断监听窗口内每100ms的平均RSSI是否超过预设阈值来判断第一资源的占据情况。在本发明的另一个实施例中，第一类型UE还可以综合考虑上述RSRP的测量和平均RSSI的测量结果来判断第一资源是否被占据。例如，第一类型UE可以参考第二类型UE进行自主资源选择，可选地，第一类型UE可以选择RSRP小于某个预设阈值的资源，测量这些资源上的RSSI，并按照RSSI大小进行资源排序。随后，第一类型UE可以选择例如RSSI较低的预设数量或者预设百分比的资源，并把这些资源看作是可选的资源。从而，当基站所分配给此第一类型UE的第一资源和这些可选资源重合时，则所述第一类型UE认为基站分配的第一资源为可用资源；反之，当基站分配的第一资源不在这些可选资源的范围内时，第一类型UE认为第一资源已被占据。
发送单元1230当所述第一资源与所述第二资源发生碰撞时，发送碰撞指示信息。可选地，所述第一类型UE可以向所述基站发送所述碰撞指示信息，以使所述基站对所述第一类型UE进行副链路传输的资源进行重新分配。另外，可选地，所述第一类型UE还可以向所述第二类型UE发送碰撞指示信息，以使所述第二类型UE重新选择副链路传输的资源。
具体地，所述发送单元1230可以通过物理层信令或高层信令来向基站反馈所选择的或不选择的资源信息。其中，当第一类型UE通过物理层信令进行反馈时，可以在指示所述选择和/或不选择的第一资源的下行控制信息所对应的反馈信息位置进行反馈，具体地，可以通过此DCI所对应的反馈信息的位置上的确认/不确认信令来进行反馈。当特定DCI对应的反馈信息的位置上的反馈信息为确认时，代表可以选择这一DCI指示的第一资源；当特定DCI对应的反馈信息位置上的反馈信息为不确认时，代表不选择这一DCI所指示的第一资源。
另外，在本发明另一个实施例中，发送单元1230还可以通过高层信令来反馈信息。例如，可以通过复用上行链路调度请求机制来进行信令传输，也可以在基站配置的物理上行共享信道(PUSCH)传输的同时进行信息反馈。具体地，所述碰撞指示信息的内容可以包括以下的一个或多个：指示分配的第一资源是否碰撞、SA分配资源的RSRP测量、RSSI测量值、SA分配的相同资源的预留周期、根据第一类型UE监听结果得到的推荐资源位置等。
在本发明一个实施例中，发送单元1230可以根据进行副链路传输的信息类型决定是否要发送碰撞指示信息。其中，当第一类型UE进行副链路传输的信息为一次性信息时，第一类型UE可以不发送碰撞指示信息，并自主选择进行副链路传输的资源。另外，可选地，当第一类型UE进行SPS传输时，第一类型UE可以向基站或第二类型UE发送碰撞指示信息，并由基站选择进行SPS传输的资源或使得第二类型UE重新选择其进行副链路传输的资源。第一类型UE是否发送碰撞指示信息可以由基站根据副链路传输的信息类型进行配置。
以上参照图12的UE 1200的结构具体说明了当基站给第一类型UE1200分配的资源已经与第二类型UE占用的资源发生碰撞时，如何规避碰撞的发生，并进行资源重选。在本发明的另一个实施例中，第一类型UE 1200还可以在碰撞之前采用主动向基站报告资源占据的方式，以使基站在资源分配时避免向第一类型UE 1200分配可能会产生碰撞的资源，从而避免碰撞的产生。具体地，第一类型UE的发送单元1230可以通过不断的资源监听主动向基站报告资源占据情况。具体地，第一类型UE的监听可以由基站预先配置。发送单元1230向基站发送的资源占据报告可以通过高层信令周期性或非周期性地进行上报，例如，发送单元1230可以将资源占据报告与其位置信息一同周期性上报，也可以根据基站的要求进行上报。在本发明另一个实施例中，资源占据报告还可以通过路边节点(RSU)进行监听和汇报。可选地，第一类型UE的发送单元1230和/或RSU所上报的资源占据报告均可以包括以下的一个或多个：RSRP测量、RSSI测量值、SA分配资源的预留周期、根据第一类型UE和/或RSU的监听结果得到的推荐资源位置等。在本发明一个实施例中，所述第一类型UE的发送单元1230和/或RSU的资源占据报告包括其监听窗口中的一个特定子集或覆盖其监听的所有时频资源，报告的范围可以根据基站的配置来确定。在本发明一个实施例中，当资源碰撞已经发生时，资源占据报告可以与前述的碰撞指示信息共同上报，以使基站对第一类型UE使用的第一资源进行重新配置。
利用根据本发明上述方面的UE，能够有效地避免通过基站调度进行副链路传输的第一类型UE和自主进行副链路传输的第二类型UE之间的资源碰撞，提高了信息传输的效率，改善了用户体验。
下面，参照图13来描述根据本发明一个实施例的UE。图13是示出了根据本发明一个实施例的UE 1300的框图，所述UE 1300为第一类型UE，所述第一类型UE通过基站调度进行副链路传输。如图13所示，UE 1300包括接收单元1310、判断单元1320和选择单元1330。除了这3个单元以外，UE 1300还可以包括其他部件，然而，由于这些部件与本发明实施例的内容无关，因此在这里省略其图示和描述。此外，由于根据本发明实施例的UE1300执行的下述操作的具体细节与在上文中参照图7描述的细节相同，因此在这里为了避免重复而省略对相同细节的重复描述。
如图13所示，接收单元1310接收基站分配的用于副链路传输的第一资源。其中，基站向第一类型UE分配的第一资源可以来自第一资源池和第二资源池的共享资源。
判断单元1320判断所述第一资源是否与第二类型UE进行副链路传输所使用的第二资源发生碰撞，其中所述第二类型UE自主进行副链路传输。
具体地，判断单元1320可以通过监听第一资源池和第二资源池之间的共享资源来判断基站所分配的第一资源是否被第二类型UE所使用的第二资源发生碰撞。可选地，判断单元1320可以检查资源分配(SA)中的第一资源并进行参考信号接收功率(RSRP)的测量，当测量得到的功率大于预设阈值时，可以认为基站所分配的第一资源被占据。另外，可选地，判断单元1320还可以通过估计平均RSSI是否大于预设阈值来判断所述第一资源是否被占据，例如，判断单元1320可以通过判断监听窗口内每100ms的平均RSSI是否超过预设阈值来判断第一资源的占据情况。在本发明的另一个实施例中，判断单元1320还可以综合考虑上述RSRP的测量和平均RSSI的测量结果来判断第一资源是否被占据。
选择单元1330当所述第一资源与所述第二资源发生碰撞时，所述第一类型UE自主选择与所述第二资源不同的第三资源进行副链路传输。
具体地，选择单元1330可以自主选择进行副链路传输的资源，以进行副链路传输。具体地，第一类型UE可以进行资源监听并从多个可选资源中自主选择干扰较小的资源来进行副链路传输。在本发明一个实施例中，选择单元1330可以根据接收信号强度指示(RSSI)测量来选择干扰最小的资源。在本发明另一个实施例中，选择单元1330还可以检查资源分配(SA)中被 占用的资源，并对进行参考信号接收功率(RSRP)的测量来决定不能够选择的资源并抛弃，随后从所有未被抛弃的资源中随机选择资源进行副链路传输。上述候选资源的选择方式仅为示例，在实际应用中，可以采用任何资源选择的方式来选择资源进行副链路传输。可选地，选择单元1330可以向基站发送其自主选择的用于副链路传输的所述第三资源。
在本发明一个实施例中，第一类型UE可能使用第三资源进行一段时间的副链路传输，并在满足某个或某些条件时停止使用第三资源进行副链路传输，其中，所述条件可以包括：当使用所述第三资源完成一个传输块的传输时，停止使用所述第三资源进行副链路传输；当半永久性调度SPS的自主资源重选被触发时，停止使用所述第三资源进行副链路传输；当满足预设时间或周期时，停止使用所述第三资源进行副链路传输；和/或当UE再次接到基站新的调度资源时，停止使用所述第三资源进行副链路传输。可选地，当第一类型UE停止使用第三资源进行副链路传输后，可以重新采用基站调度的方式进行副链路传输。
在本发明一个实施例中，所述第三资源选自第二资源池中，所述第二资源池与第一资源池相关联，其中所述第一资源池用于副链路传输模式下的第一类型UE的信息传输，所述第二资源池用于副链路传输模式下的第二类型UE的信息传输。其中，所述第二资源池与所述第一资源池的关联可以由基站配置。例如，当第一资源池有多个，且第二资源池也有多个时，某个第一资源池可以与一个或多个第二资源池具有关联，可选地，各个第一资源池也可以与各个第二资源池一一对应。
在本发明一个实施例中，第一类型UE可以使用基站配置的半永久性调度的参数进行所述第三资源的自主选择和副链路传输。
在本发明另一个实施例中，第一类型UE还可以向基站发送调度放弃报告，所述调度放弃报告指示所述第一类型UE放弃所述基站调度的所述第一资源。所述调度放弃报告可以通过物理层、数据链路层或网络层等低层或高层信令来发送调度放弃报告。
利用根据本发明上述方面的UE，能够有效地避免通过基站调度进行副链路传输的第一类型UE和自主进行副链路传输的第二类型UE之间的资源碰撞，提高了信息传输的效率，改善了用户体验。
以上参照图12说明了根据本发明一个实施例的第一类型UE 1200的结构。其中，当第一类型UE 1200的发送单元1230所发送的碰撞指示信息发送至第二类型UE时，可以促使第二类型UE进行资源重选来避免碰撞的发生。相应地，下面将参照图14来描述根据本发明一个实施例的用户设备，为第二类型UE。图14是示出了根据本发明一个实施例的UE 1400的框图，所述UE 1400为第二类型UE，所述第二类型UE自主进行副链路传输。如图14所示，UE 1400包括接收单元1410和选择单元1420。除了这2个单元以外，UE 1400还可以包括其他部件，然而，由于这些部件与本发明实施例的内容无关，因此在这里省略其图示和描述。此外，由于根据本发明实施例的UE 1400执行的下述操作的具体细节与在上文中参照图8描述的细节相同，因此在这里为了避免重复而省略对相同细节的重复描述。
如图14所示，接收单元1410接收第一类型UE发送的碰撞指示信息，其中所述第一类型UE通过基站调度通过第一资源进行副链路传输，所述碰撞指示信息指示所述第一资源与所述第二类型UE进行副链路传输所使用的第二资源发生碰撞。
可选地，基站向第一类型UE分配的第一资源可以来自第一资源池和第二资源池的共享资源。第一类型UE可以通过监听第一资源池和第二资源池之间的共享资源来判断基站所分配的第一资源是否被第二类型UE所使用的第二资源发生碰撞。可选地，第一类型UE可以检查资源分配(SA)中的第一资源并进行参考信号接收功率(RSRP)的测量，当测量得到的功率大于预设阈值时，可以认为基站所分配的第一资源被占据。另外，可选地，第一类型UE还可以通过估计平均RSSI是否大于预设阈值来判断所述第一资源是否被占据，例如，第一类型UE可以通过判断监听窗口内每100ms的平均RSSI是否超过预设阈值来判断第一资源的占据情况。在本发明的另一个实施例中，第一类型UE还可以综合考虑上述RSRP的测量和平均RSSI的测量结果来判断第一资源是否被占据。当所述第一资源与所述第二资源发生碰撞时，第一类型UE将向第二类型UE发送碰撞指示信息。
具体地，碰撞指示信息可以为第一类型UE向第二类型UE发送的一次性SA消息，所述SA消息可以在第一传输块传输的之前或之后。所述SA消息可以包括信令识别标志，所述信令识别标志可以为1比特位，例如，当 这一比特位为1时，可以指示第二类型UE进行资源重选，而当这一比特位为0时，第二类型UE无需进行资源重选。此外，SA消息还可以包括传统的SA消息中的内容，例如，SA消息可以包括如下内容的一个或多个：优先级、资源预留、频率资源分配(指示第一类型UE资源的频域位置)、初始传输和重传之间的时间间隔(指示第一类型UE资源的时域位置)、MCS、重发指数、保留位。
在本发明一个实施例中，第一类型UE可以根据进行副链路传输的信息类型决定是否要发送碰撞指示信息。其中，当第一类型UE进行副链路传输的信息为一次性信息时，第一类型UE可以不发送碰撞指示信息，并自主选择进行副链路传输的资源。另外，可选地，当第一类型UE进行SPS传输时，第一类型UE可以向第二类型UE发送碰撞指示信息，并使得第二类型UE重新选择其进行副链路传输的资源。第一类型UE是否发送碰撞指示信息可以由基站根据副链路传输的信息类型进行配置。
选择单元1420重新选择副链路传输的资源。
当接收单元1410接收到第一类型UE所发送的碰撞指示信息之后，选择单元1420可以在分配给其的第二资源池中进行自主选择，以改变其进行副链路传输的资源。
利用根据本发明上述方面的UE，能够有效地避免通过基站调度进行副链路传输的第一类型UE和自主进行副链路传输的第二类型UE之间的资源碰撞，提高了信息传输的效率，改善了用户体验。
<硬件结构>
另外，上述实施方式的说明中使用的框图示出了以功能为单位的块。这些功能块(结构单元)通过硬件和/或软件的任意组合来实现。此外，各功能块的实现手段并不特别限定。即，各功能块可以通过在物理上和/或逻辑上相结合的一个装置来实现，也可以将在物理上和/或逻辑上相分离的两个以上装置直接地和/或间接地(例如通过有线和/或无线)连接从而通过上述多个装置来实现。
例如，本发明的一实施方式中的无线基站、用户设备等可以作为执行本发明的无线通信方法的处理的计算机来发挥功能。图15是示出本发明的一实施方式所涉及的用户设备的硬件结构的一例的图。上述的基站900、1000 和用户设备1100、1200、1300和1400可以作为在物理上包括处理器1510、内存1520、存储器1530、通信装置1540、输入装置1550、输出装置1560、总线1570等的计算机装置来构成。
另外，在以下的说明中，“装置”这样的文字也可替换为电路、设备、单元等。基站900、1000和用户设备1100、1200、1300和1400的硬件结构可以包括一个或多个图中所示的各装置，也可以不包括部分装置。
例如，处理器1510仅图示出一个，但也可以为多个处理器。此外，可以通过一个处理器来执行处理，也可以通过一个以上的处理器同时、依次、或采用其它方法来执行处理。另外，处理器1510可以通过一个以上的芯片来安装。
基站900、1000和用户设备1100、1200、1300和1400中的各功能例如通过如下方式实现：通过将规定的软件(程序)读入到处理器1510、内存1520等硬件上，从而使处理器1510进行运算，对由通信装置940进行的通信进行控制，并对内存1520和存储器1530中的数据的读出和/或写入进行控制。
处理器510例如使操作系统进行工作从而对计算机整体进行控制。处理器1510可以由包括与周边装置的接口、控制装置、运算装置、寄存器等的中央处理器(CPU，Central Processing Unit)构成。
此外，处理器1510将程序(程序代码)、软件模块、数据等从存储器1530和/或通信装置1540读出到内存1520，并根据它们执行各种处理。作为程序，可以采用使计算机执行在上述实施方式中说明的动作中的至少一部分的程序。例如，基站1000的分配单元1010可以通过保存在内存1520中并通过处理器1510来工作的控制程序来实现。对于其它功能块，也可以同样地来实现。
内存1520是计算机可读取记录介质，例如可以由只读存储器(ROM，Read Only Memory)、可编程只读存储器(EPROM，Erasable Programmable ROM)、电可编程只读存储器(EEPROM，Electrically EPROM)、随机存取存储器(RAM，Random Access Memory)、其它适当的存储介质中的至少一个来构成。内存1520也可以称为寄存器、高速缓存、主存储器(主存储装置)等。内存1520可以保存用于实施本发明的一实施方式所涉及的无线通 信方法的可执行程序(程序代码)、软件模块等。
存储器1530是计算机可读取记录介质，例如可以由软磁盘(flexible disk)、软(注册商标)盘(floppy disk)、磁光盘(例如，只读光盘(CD-ROM(Compact Disc ROM)等)、数字通用光盘、蓝光(Blu-ray，注册商标)光盘)、可移动磁盘、硬盘驱动器、智能卡、闪存设备(例如，卡、棒(stick)、密钥驱动器(key driver))、磁条、数据库、服务器、其它适当的存储介质中的至少一个来构成。存储器1530也可以称为辅助存储装置。
通信装置1540是用于通过有线和/或无线网络进行计算机间的通信的硬件(发送接收设备)，例如也称为网络设备、网络控制器、网卡、通信模块等。通信装置1540可以包括但不限于高频开关、滤波器、频率合成器等。例如，上述的传输单元1120等可以通过通信装置1540来实现。
输入装置1550是接受来自外部的输入的输入设备(例如，键盘、鼠标、麦克风、开关、按钮、传感器等)。输出装置1560是实施向外部的输出的输出设备(例如，显示器、扬声器、发光二极管(LED，Light Emitting Diode)灯等)。另外，输入装置1550和输出装置1560也可以为一体的结构(例如触控面板)。
此外，处理器1510、内存1520等各装置通过用于对信息进行通信的总线1570连接。总线1570可以由单一的总线构成，也可以由装置间不同的总线构成。
此外，基站900、1000和用户设备1100、1200、1300和1400可以包括微处理器、数字信号处理器(DSP，Digital Signal Processor)、专用集成电路(ASIC，Application Specific Integrated Circuit)、可编程逻辑器件(PLD，Programmable Logic Device)、现场可编程门阵列(FPGA，Field Programmable Gate Array)等硬件，可以通过该硬件来实现各功能块的部分或全部。例如，处理器1510可以通过这些硬件中的至少一个来安装。
(变形例)
另外，关于本说明书中说明的用语和/或对本说明书进行理解所需的用语，可以与具有相同或类似含义的用语进行互换。例如，信道和/或符号也可以为信号(信令)。此外，信号也可以为消息。参考信号也可以简称为RS(Reference Signal)，根据所适用的标准，也可以称为导频(Pilot)、导频信 号等。此外，分量载波(CC，Component Carrier)也可以称为小区、频率载波、载波频率等。
此外，无线帧在时域中可以由一个或多个期间(帧)构成。构成无线帧的该一个或多个期间(帧)中的每一个也可以称为子帧。进而，子帧在时域中可以由一个或多个时隙构成。子帧可以是不依赖于参数配置(numerology)的固定的时间长度(例如1ms)。
进而，时隙在时域中可以由一个或多个符号(正交频分复用(OFDM，Orthogonal Frequency Division Multiplexing)符号、单载波频分多址(SC-FDMA，Single Carrier Frequency Division Multiple Access)符号等)构成。此外，时隙也可以是基于参数配置的时间单元。此外，时隙还可以包括多个微时隙。各微时隙在时域中可以由一个或多个符号构成。此外，微时隙也可以称为子时隙。
无线帧、子帧、时隙、微时隙以及符号均表示传输信号时的时间单元。无线帧、子帧、时隙、微时隙以及符号也可以使用各自对应的其它名称。例如，一个子帧可以被称为传输时间间隔(TTI，Transmission Time Interval)，多个连续的子帧也可以被称为TTI，一个时隙或一个微时隙也可以被称为TTI。也就是说，子帧和/或TTI可以是现有的LTE中的子帧(1ms)，也可以是短于1ms的期间(例如1～13个符号)，还可以是长于1ms的期间。另外，表示TTI的单元也可以称为时隙、微时隙等而非子帧。
在此，TTI例如是指无线通信中调度的最小时间单元。例如，在LTE系统中，无线基站对各用户设备进行以TTI为单位分配无线资源(在各用户设备中能够使用的频带宽度、发射功率等)的调度。另外，TTI的定义不限于此。
TTI可以是经过信道编码的数据包(传输块)、码块、和/或码字的发送时间单元，也可以是调度、链路适配等的处理单元。另外，在给出TTI时，实际上与传输块、码块、和/或码字映射的时间区间(例如符号数)也可以短于该TTI。
另外，一个时隙或一个微时隙被称为TTI时，一个以上的TTI(即一个以上的时隙或一个以上的微时隙)也可以成为调度的最小时间单元。此外，构成该调度的最小时间单元的时隙数(微时隙数)可以受到控制。
具有1ms时间长度的TTI也可以称为常规TTI(LTE Rel.8-12中的TTI)、标准TTI、长TTI、常规子帧、标准子帧、或长子帧等。短于常规TTI的TTI也可以称为压缩TTI、短TTI、部分TTI(partial或fractional TTI)、压缩子帧、短子帧、微时隙、或子时隙等。
另外，长TTI(例如常规TTI、子帧等)也可以用具有超过1ms的时间长度的TTI来替换，短TTI(例如压缩TTI等)也可以用具有比长TTI的TTI长度短且1ms以上的TTI长度的TTI来替换。
资源块(RB，Resource Block)是时域和频域的资源分配单元，在频域中，可以包括一个或多个连续的副载波(子载波(subcarrier))。此外，RB在时域中可以包括一个或多个符号，也可以为一个时隙、一个微时隙、一个子帧或一个TTI的长度。一个TTI、一个子帧可以分别由一个或多个资源块构成。另外，一个或多个RB也可以称为物理资源块(PRB，Physical RB)、子载波组(SCG，Sub-Carrier Group)、资源单元组(REG，Resource Element Group)、PRG对、RB对等。
此外，资源块也可以由一个或多个资源单元(RE，Resource Element)构成。例如，一个RE可以是一个子载波和一个符号的无线资源区域。
另外，上述的无线帧、子帧、时隙、微时隙以及符号等的结构仅仅为示例。例如，无线帧中包括的子帧数、每个子帧或无线帧的时隙数、时隙内包括的微时隙数、时隙或微时隙中包括的符号和RB的数目、RB中包括的子载波数、以及TTI内的符号数、符号长度、循环前缀(CP，Cyclic Prefix)长度等的结构可以进行各种各样的变更。
此外，本说明书中说明的信息、参数等可以用绝对值来表示，也可以用与规定值的相对值来表示，还可以用对应的其它信息来表示。例如，无线资源可以通过规定的索引来指示。进一步地，使用这些参数的公式等也可以与本说明书中明确公开的不同。
在本说明书中用于参数等的名称在任何方面都并非限定性的。例如，各种各样的信道(物理上行链路控制信道(PUCCH，Physical Uplink Control Channel)、物理下行链路控制信道(PDCCH，Physical Downlink Control Channel)等)和信息单元可以通过任何适当的名称来识别，因此为这些各种各样的信道和信息单元所分配的各种各样的名称在任何方面都并非限定 性的。
本说明书中说明的信息、信号等可以使用各种各样不同技术中的任意一种来表示。例如，在上述的全部说明中可能提及的数据、命令、指令、信息、信号、比特、符号、芯片等可以通过电压、电流、电磁波、磁场或磁性粒子、光场或光子、或者它们的任意组合来表示。
此外，信息、信号等可以从上层向下层、和/或从下层向上层输出。信息、信号等可以经由多个网络节点进行输入或输出。
输入或输出的信息、信号等可以保存在特定的场所(例如内存)，也可以通过管理表进行管理。输入或输出的信息、信号等可以被覆盖、更新或补充。输出的信息、信号等可以被删除。输入的信息、信号等可以被发往其它装置。
信息的通知并不限于本说明书中说明的方式/实施方式，也可以通过其它方法进行。例如，信息的通知可以通过物理层信令(例如，下行链路控制信息(DCI，Downlink Control Information)、上行链路控制信息(UCI，Uplink Control Information))、上层信令(例如，无线资源控制(RRC，Radio Resource Control)信令、广播信息(主信息块(MIB，Master Information Block)、系统信息块(SIB，System Information Block)等)、媒体存取控制(MAC，Medium Access Control)信令)、其它信号或者它们的组合来实施。
另外，物理层信令也可以称为L1/L2(第1层/第2层)控制信息(L1/L2控制信号)、L1控制信息(L1控制信号)等。此外，RRC信令也可以称为RRC消息，例如可以为RRC连接建立(RRC Connection Setup)消息、RRC连接重配置(RRC Connection Reconfiguration)消息等。此外，MAC信令例如可以通过MAC控制单元(MAC CE(Control Element))来通知。
软件无论被称为软件、固件、中间件、微代码、硬件描述语言，还是以其它名称来称呼，都应宽泛地解释为是指命令、命令集、代码、代码段、程序代码、程序、子程序、软件模块、应用程序、软件应用程序、软件包、例程、子例程、对象、可执行文件、执行线程、步骤、功能等。
此外，软件、命令、信息等可以经由传输介质被发送或接收。例如，当使用有线技术(同轴电缆、光缆、双绞线、数字用户线路(DSL，Digital Subscriber Line)等)和/或无线技术(红外线、微波等)从网站、服务器、 或其它远程资源发送软件时，这些有线技术和/或无线技术包括在传输介质的定义内。
本说明书中使用的“系统”和“网络”这样的用语可以互换使用。
在本说明书中，“基站(BS，Base Station)”、“无线基站”、“eNB”、“gNB”、“小区”、“扇区”、“小区组”、“载波”以及“分量载波”这样的用语可以互换使用。基站有时也以固定台(fixed station)、NodeB、eNodeB(eNB)、接入点(access point)、发送点、接收点、毫微微小区、小小区等用语来称呼。
基站可以容纳一个或多个(例如三个)小区(也称为扇区)。当基站容纳多个小区时，基站的整个覆盖区域可以划分为多个更小的区域，每个更小的区域也可以通过基站子系统(例如，室内用小型基站(射频拉远头(RRH，Remote Radio Head)))来提供通信服务。“小区”或“扇区”这样的用语是指在该覆盖中进行通信服务的基站和/或基站子系统的覆盖区域的一部分或整体。
在本说明书中，“移动台(MS，Mobile Station)”、“用户终端(user terminal)”、“用户设备(UE，User Equipment)”以及“终端”这样的用语可以互换使用。基站有时也以固定台(fixed station)、NodeB、eNodeB(eNB)、接入点(access point)、发送点、接收点、毫微微小区、小小区等用语来称呼。
移动台有时也被本领域技术人员以用户台、移动单元、用户单元、无线单元、远程单元、移动设备、无线设备、无线通信设备、远程设备、移动用户台、接入终端、移动终端、无线终端、远程终端、手持机、用户代理、移动客户端、客户端或者若干其它适当的用语来称呼。
此外，本说明书中的无线基站也可以用用户终端来替换。例如，对于将无线基站和用户终端间的通信替换为多个用户终端间(D2D，Device-to-Device)的通信的结构，也可以应用本发明的各方式/实施方式。此时，可以将上述的无线基站所具有的功能当作用户终端所具有的功能。此外，“上行”和“下行”等文字也可以替换为“侧”。例如，上行信道也可以替换为侧信道。
同样，本说明书中的用户终端也可以用无线基站来替换。此时，可以将上述的用户终端所具有的功能当作无线基站所具有的功能。
在本说明书中，设为通过基站进行的特定动作根据情况有时也通过其上级节点(upper node)来进行。显然，在具有基站的由一个或多个网络节点(network nodes)构成的网络中，为了与终端间的通信而进行的各种各样的动作可以通过基站、除基站之外的一个以上的网络节点(可以考虑例如移动管理实体(MME，Mobility  Management Entity)、服务网关(S-GW，Serving-Gateway)等，但不限于此)、或者它们的组合来进行。
本说明书中说明的各方式/实施方式可以单独使用，也可以组合使用，还可以在执行过程中进行切换来使用。此外，本说明书中说明的各方式/实施方式的处理步骤、序列、流程图等只要没有矛盾，就可以更换顺序。例如，关于本说明书中说明的方法，以示例性的顺序给出了各种各样的步骤单元，而并不限定于给出的特定顺序。
本说明书中说明的各方式/实施方式可以应用于利用长期演进(LTE，Long Term Evolution)、高级长期演进(LTE-A，LTE-Advanced)、超越长期演进(LTE-B，LTE-Beyond)、超级第3代移动通信系统(SUPER 3G)、高级国际移动通信(IMT-Advanced)、第4代移动通信系统(4G，4th generation mobile communication system)、第5代移动通信系统(5G，5th generation mobile communication system)、未来无线接入(FRA，Future Radio Access)、新无线接入技术(New-RAT，Radio Access Technology)、新无线(NR，New Radio)、新无线接入(NX，New radio access)、新一代无线接入(FX，Future generation radio access)、全球移动通信系统(GSM(注册商标)，Global System for Mobile communications)、码分多址接入2000(CDMA2000)、超级移动宽带(UMB，Ultra Mobile Broadband)、IEEE 802.11(Wi-Fi(注册商标))、IEEE 802.16(WiMAX(注册商标))、IEEE 802.20、超宽带(UWB，Ultra-WideBand)、蓝牙(Bluetooth(注册商标))、其它适当的无线通信方法的系统和/或基于它们而扩展的下一代系统。
本说明书中使用的“根据”这样的记载，只要未在其它段落中明确记载，则并不意味着“仅根据”。换言之，“根据”这样的记载是指“仅根据”和“至少根据”这两者。
本说明书中使用的对使用“第一”、“第二”等名称的单元的任何参照，均非全面限定这些单元的数量或顺序。这些名称可以作为区别两个以上单元的便利方法而在本说明书中使用。因此，第一单元和第二单元的参照并不意味着仅可采用两个单元或者第一单元必须以若干形式占先于第二单元。
本说明书中使用的“判断(确定)(determining)”这样的用语有时包含多种多样的动作。例如，关于“判断(确定)”，可以将计算(calculating)、 推算(computing)、处理(processing)、推导(deriving)、调查(investigating)、搜索(looking up)(例如表、数据库、或其它数据结构中的搜索)、确认(ascertaining)等视为是进行“判断(确定)”。此外，关于“判断(确定)”，也可以将接收(receiving)(例如接收信息)、发送(transmitting)(例如发送信息)、输入(input)、输出(output)、存取(accessing)(例如存取内存中的数据)等视为是进行“判断(确定)”。此外，关于“判断(确定)”，还可以将解决(resolving)、选择(selecting)、选定(choosing)、建立(establishing)、比较(comparing)等视为是进行“判断(确定)”。也就是说，关于“判断(确定)”，可以将若干动作视为是进行“判断(确定)”。
本说明书中使用的“连接的(connected)”、“结合的(coupled)”这样的用语或者它们的任何变形是指两个或两个以上单元间的直接的或间接的任何连接或结合，可以包括以下情况：在相互“连接”或“结合”的两个单元间，存在一个或一个以上的中间单元。单元间的结合或连接可以是物理上的，也可以是逻辑上的，或者还可以是两者的组合。例如，“连接”也可以替换为“接入”。在本说明书中使用时，可以认为两个单元是通过使用一个或一个以上的电线、线缆、和/或印刷电气连接，以及作为若干非限定性且非穷尽性的示例，通过使用具有射频区域、微波区域、和/或光(可见光及不可见光这两者)区域的波长的电磁能等，被相互“连接”或“结合”。
在本说明书或权利要求书中使用“包括(including)”、“包含(comprising)”、以及它们的变形时，这些用语与用语“具备”同样是开放式的。进一步地，在本说明书或权利要求书中使用的用语“或(or)”并非是异或。
以上对本发明进行了详细说明，但对于本领域技术人员而言，显然，本发明并非限定于本说明书中说明的实施方式。本发明在不脱离由权利要求书的记载所确定的本发明的宗旨和范围的前提下，可以作为修改和变更方式来实施。因此，本说明书的记载是以示例说明为目的，对本发明而言并非具有任何限制性的意义。

Claims (27)

  1. 一种资源配置方法，所述方法由基站执行，包括：
    配置第一资源池，所述第一资源池用于副链路传输模式下的第一类型UE的信息传输，其中所述第一类型UE通过基站调度进行副链路传输；
    配置第二资源池，所述第二资源池用于副链路传输模式下的第二类型UE的信息传输，其中所述第二类型UE自主进行副链路传输，所述第一资源池和所述第二资源池相互正交。
  2. 一种资源调度方法，所述方法由基站执行，包括：
    向第一类型UE分配用于副链路传输的多个候选资源，其中所述第一类型UE通过基站调度进行副链路传输；
    向所述第一类型UE发送关于所述多个候选资源的调度信息。
  3. 如权利要求2所述的方法，其中，所述方法还包括:
    接收所述第一类型UE关于所述多个候选资源的选择的反馈信息；
    根据所述第一类型UE的反馈信息，在所述多个候选资源中确定所述第一类型UE进行副链路传输的资源，以使所述第一类型UE利用所确定的资源进行副链路传输。
  4. 如权利要求2所述的方法，其中，所述向所述第一类型UE发送关于所述多个候选资源的调度信息包括：
    通过多个下行控制信息发送关于所述多个候选资源的调度信息。
  5. 如权利要求4所述的方法，其中，
    所述用于指示候选资源的任一个下行控制信息与任一个候选资源之间的时延均大于最小要求值。
  6. 如权利要求5所述的方法，其中，
    所述候选资源与指示此候选资源的下行控制信息之间的时延可以静态配置或利用下行控制信息里面的时延指示信息进行动态调整。
  7. 如权利要求4所述的方法，其中，所述向所述第一类型UE发送关于所述多个候选资源的调度信息包括：
    所述多个下行控制信息分别处于连续多个时隙内。
  8. 如权利要求2所述的方法，其中，所述向所述第一类型UE发送关于 所述多个候选资源的调度信息包括：
    通过一个下行控制信息发送关于所述多个候选资源的调度信息。
  9. 如权利要求2所述的方法，其中，所述向所述第一类型UE发送关于所述多个候选资源的调度信息包括：
    通过高层信息发送关于所述多个候选资源的调度信息。
  10. 一种资源调度方法，由第一类型UE执行，其中所述第一类型UE通过基站调度进行副链路传输，所述方法包括：
    接收基站分配的用于副链路传输的多个候选资源；
    利用所述多个候选资源中的一个进行副链路传输。
  11. 如权利要求10所述的方法，其中，所述利用所述多个候选资源中的一个进行副链路传输包括：
    发送关于所述多个候选资源的选择的反馈信息，以使所述基站根据所述反馈信息，在所述多个候选资源中确定所述第一类型UE进行副链路传输的资源；
    利用所确定的资源进行副链路传输。
  12. 如权利要求11所述的方法，其中，所述发送关于所述多个候选资源的选择的反馈信息包括：
    确定选择和/或不选择的候选资源；
    在指示所述选择和/或不选择的候选资源的下行控制信息所对应的反馈信息位置进行反馈。
  13. 如权利要求10所述的方法，其中，所述利用所述多个候选资源中的一个进行副链路传输包括：
    在所述多个候选资源中选择进行副链路传输的资源；
    利用所选择的资源进行副链路传输。
  14. 一种资源调度方法，由第一类型UE执行，其中所述第一类型UE通过基站调度进行副链路传输，所述方法包括：
    接收基站分配的用于副链路传输的第一资源；
    判断所述第一资源是否与第二类型UE进行副链路传输所使用的第二资源发生碰撞，其中所述第二类型UE自主进行副链路传输；
    当所述第一资源与所述第二资源发生碰撞时，发送碰撞指示信息。
  15. 如权利要求14所述的方法，其中，所述发送碰撞指示信息包括：
    向所述基站发送所述碰撞指示信息，以使所述基站对所述第一类型UE进行副链路传输的资源进行重新分配。
  16. 如权利要求14所述的方法，其中，所述发送碰撞指示信息包括：
    向所述第二类型UE发送碰撞指示信息，以使所述第二类型UE重新选择副链路传输的资源。
  17. 一种资源调度方法，由第一类型UE执行，其中所述第一类型UE通过基站调度进行副链路传输，所述方法包括：
    接收基站分配的用于副链路传输的第一资源；
    判断所述第一资源是否与第二类型UE进行副链路传输所使用的第二资源发生碰撞，其中所述第二类型UE自主进行副链路传输；
    当所述第一资源与所述第二资源发生碰撞时，所述第一类型UE自主选择与所述第二资源不同的第三资源进行副链路传输。
  18. 如权利要求17所述的方法，其中，所述方法还包括：
    当使用所述第三资源完成一个数据块的传输时，停止使用所述第三资源进行副链路传输；
    当半永久性调度的重选被触发时，停止使用所述第三资源进行副链路传输；
    当满足预设时间或周期时，停止使用所述第三资源进行副链路传输；和/或
    当UE再次接到基站新的调度资源时，停止使用所述第三资源进行副链路传输。
  19. 如权利要求17所述的方法，其中，
    所述第三资源选自第二资源池中，所述第二资源池与第一资源池相关联，其中所述第一资源池用于副链路传输模式下的第一类型UE的信息传输，所述第二资源池用于副链路传输模式下的第二类型UE的信息传输。
  20. 如权利要求19所述的方法，其中，
    所述第二资源池与所述第一资源池的关联由基站配置。
  21. 如权利要求17所述的方法，其中，所述方法还包括：
    使用基站配置的半永久性调度的参数进行所述第三资源的自主选择和 副链路传输。
  22. 如权利要求17所述的方法，其中，所述方法还包括：
    向基站发送所述第一类型UE自主选择的用于副链路传输的所述第三资源。
  23. 如权利要求17所述的方法，其中，所述方法还包括：
    向基站发送调度放弃报告，所述调度放弃报告指示所述第一类型UE放弃所述基站调度的所述第一资源。
  24. 一种资源调度方法，由第二类型UE执行，其中所述第二类型UE自主进行副链路传输，所述方法包括：
    接收第一类型UE发送的碰撞指示信息，其中所述第一类型UE通过基站调度通过第一资源进行副链路传输，所述碰撞指示信息指示所述第一资源与所述第二类型UE进行副链路传输所使用的第二资源发生碰撞；
    重新选择用于副链路传输的资源。
  25. 一种基站，包括：
    第一配置单元，用于配置第一资源池，所述第一资源池用于副链路传输模式下的第一类型UE的信息传输，其中所述第一类型UE通过基站调度进行副链路传输；
    第二配置单元，用于配置第二资源池，所述第二资源池用于副链路传输模式下的第二类型UE的信息传输，其中所述第二类型UE自主进行副链路传输，所述第一资源池和所述第二资源池相互正交。
  26. 一种基站，包括：
    分配单元，配置为向第一类型UE分配用于副链路传输的多个候选资源，其中所述第一类型UE通过基站调度进行副链路传输；
    发送单元，配置为向所述第一类型UE发送关于所述多个候选资源的调度信息。
  27. 一种用户设备，所述用户设备为第一类型UE，所述第一类型UE通过基站调度进行副链路传输，包括：
    接收单元，配置为接收基站分配的用于副链路传输的第一资源；
    判断单元，配置为判断所述第一资源是否与第二类型UE进行副链路传输所使用的第二资源发生碰撞，其中所述第二类型UE自主进行副链路传输；
    选择单元，配置为当所述第一资源与所述第二资源发生碰撞时，自主选择与所述第二资源不同的第三资源进行副链路传输。
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