WO2017128878A1 - Resource allocation method, network side device, terminal and computer storage medium - Google Patents

Resource allocation method, network side device, terminal and computer storage medium Download PDF

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Publication number
WO2017128878A1
WO2017128878A1 PCT/CN2016/109718 CN2016109718W WO2017128878A1 WO 2017128878 A1 WO2017128878 A1 WO 2017128878A1 CN 2016109718 W CN2016109718 W CN 2016109718W WO 2017128878 A1 WO2017128878 A1 WO 2017128878A1
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Prior art keywords
resource
uplink
uplink scheduling
scheduling information
information
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PCT/CN2016/109718
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French (fr)
Chinese (zh)
Inventor
王文焕
朱思真
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中兴通讯股份有限公司
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Publication of WO2017128878A1 publication Critical patent/WO2017128878A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26Resource reservation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/1263Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/27Transitions between radio resource control [RRC] states
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/40Connection management for selective distribution or broadcast

Definitions

  • V2X Vehicle-to-the-air
  • V2X Vehicle-to-the-air
  • V2I/N Vehicle-to-Infrastructure/Network
  • V2P Vehicle-to-Person
  • R12, Release 12 The difference between V2X communication and the device-to-device (D2D) communication in version 12 (R12, Release 12) is that the moving speed is increased, the user density is increased, the reliability requirement is high, and the real-time response is characterized.
  • D2D communication does not have to consider the above high demand. Therefore, the existing mechanism of D2D communication cannot meet the requirements of V2X communication, and must be optimized according to the characteristics of V2X.
  • FIG. 1 is a schematic diagram of an application scenario of the prior art; as shown in FIG. 1, a user equipment (UE, User Equipment) first sends a V2X information to an evolved unified terrestrial radio in an uplink (UL). An E-UTRAN (Evolved Universal Terrestrial Radio Access Network), and then the E-UTRAN transmits this V2X information on the downlink (DL) to multiple UEs within the coverage.
  • the uplink data transmission of the existing long-term evolution (LTE) network UE is usually performed by the evolved base station (eNB, eNodeB) through dynamic scheduling or semi-persistent scheduling. When the UE has uplink data transmission, there is no uplink scheduling information.
  • LTE long-term evolution
  • UL grant usually sends an uplink data request by the uplink scheduling (SR) request.
  • SR uplink scheduling
  • the eNB After receiving the SR request, the eNB usually allocates sufficient resources for the UE to send a buffer status report (BSR), and then the UE is The uplink BSR tells the eNodeB how much data is sent in the buffer, so that the eNB decides how much uplink to allocate to the UE.
  • Resources For V2X business requirements, especially event-triggered services, the business requirements are immediately after the trigger, and the delay requirements are extremely high, while the current mechanism's resource request process takes a long time. Therefore, how to reduce the access delay of the V2X low-latency service based on the Uu interface and meet the requirements of the V2X communication, there is currently no effective solution in the prior art.
  • the embodiments of the present invention provide a resource configuration method, a network side device, a terminal, and a computer storage medium.
  • the network side device allocates the uplink resource of the low-latency service by using the configuration or the reservation mode, and generates the uplink scheduling information based on the allocated uplink resource, including:
  • the network device After the network side device allocates the uplink resource of the normal service, the network device allocates the remaining uplink resource to the low-latency service, and generates at least one uplink scheduling information based on the allocated uplink resource.
  • the network side device allocates the uplink resource
  • the part of the uplink resource is reserved for the low-latency service, and the at least one uplink scheduling information is generated according to the allocated uplink resource
  • the network side device pre-configures the fixed uplink resource allocation to the low-latency service, and generates at least one uplink scheduling information based on the allocated uplink resource.
  • the sending the uplink scheduling information includes:
  • the uplink scheduling information is sent by using a Physical Downlink Control Channel (PDCCH), where the uplink scheduling information is sent in a preset format and is scrambled based on the preset identifier.
  • PDCCH Physical Downlink Control Channel
  • the preset format of the uplink scheduling information includes: format0, format4, or format X;
  • the format X includes at least a frequency domain resource indication and a time domain resource indication.
  • the frequency domain resource indicates a bitmap including an uplink bandwidth available resource group number or a resource group serial number and a resource group number of the sending resource;
  • the time domain resource includes the number of consecutive uplink subframes available to the frequency domain resource.
  • the preset identifier is at least one set of wireless network temporary identifiers for the low latency service.
  • the method before the sending the uplink scheduling information, the method further includes: sending the preset identifier by using a broadcast message;
  • RRC radio resource control
  • the preset identifier is pre-configured in a predefined manner.
  • the at least one uplink scheduling information includes resource location information and control information for indicating the low latency service or different services.
  • the uplink scheduling information when the uplink scheduling information is scrambled by different preset identifiers, the uplink scheduling information is sent in the same or different period.
  • the fixed uplink resource generates at least one uplink scheduling information and is sent by using a broadcast message
  • the uplink scheduling information of the fixed uplink resource is pre-configured in a predefined manner.
  • the searching and obtaining uplink scheduling information includes:
  • Searching for a common search space of the PDCCH, or a specific search space of the terminal, or a dedicated search space of the low-latency service obtains uplink scheduling information.
  • the method before the obtaining the uplink scheduling information, the method further includes: the terminal obtaining a preset identifier by using a broadcast message; or obtaining a preset identifier by using RRC signaling; or obtaining a pre-configured manner by using a predefined manner.
  • Default identifier by using a broadcast message; or obtaining a preset identifier by using RRC signaling; or obtaining a pre-configured manner by using a predefined manner.
  • the method further includes: descrambling the uplink scheduling information based on the preset identifier, and obtaining uplink scheduling allocation information of the low-latency service.
  • the embodiment of the present invention further provides a network side device, where the network side device includes: an allocation module and a sending module;
  • the sending module is configured to send uplink scheduling information generated by the allocation module.
  • the reserved uplink resource is allocated to the low-latency service, and the at least one uplink scheduling information is generated based on the allocated uplink resource;
  • the fixed uplink resource is allocated to the low-latency service, and at least one uplink scheduling information is generated based on the allocated uplink resource.
  • the sending module is configured to send the uplink scheduling information by using a PDCCH, where the uplink scheduling information is sent in a preset format, and is scrambled based on the preset identifier.
  • the preset format includes: format0, format4, or format X;
  • the format X includes at least a frequency domain resource indication and a time domain resource indication.
  • the frequency domain resource indicates a bitmap including an uplink bandwidth available resource group sequence number or a resource group serial number and a resource group number of the sending resource;
  • the time domain resource includes the number of consecutive uplink subframes available to the frequency domain resource.
  • the sending module is further configured to: send the preset identifier by using a broadcast message before sending the uplink scheduling information; or send the preset identifier by using RRC signaling;
  • the allocation module is configured to pre-configure the preset identifier in a predefined manner.
  • the at least one uplink scheduling information includes resource location information and control information for indicating the low latency service or different services.
  • the fixed uplink resource generates at least one uplink scheduling information and is sent by using a broadcast message
  • the uplink scheduling information of the fixed uplink resource is pre-configured in a predefined manner.
  • the embodiment of the present invention further provides a terminal, where the terminal includes: an obtaining unit, a processing unit, and a sending unit;
  • the obtaining unit is configured to: after receiving the trigger indication of the low-latency service, search and obtain uplink scheduling information;
  • the processing unit is configured to determine uplink scheduling allocation information based on the uplink scheduling information obtained by the obtaining unit;
  • the sending unit is configured to send information according to an uplink scheduling allocation information determined by the processing unit.
  • the obtaining unit is further configured to: before obtaining uplink scheduling information, Obtaining a preset identifier by using a broadcast message; or obtaining a preset identifier by using RRC signaling;
  • the processing unit is configured to descramble the uplink scheduling information based on the preset identifier obtained by the obtaining unit, to obtain uplink scheduling allocation information of the low-latency service, or configured as a pre-configured preset identifier solution.
  • the uplink scheduling information is scrambled to obtain uplink scheduling allocation information of the low-latency service.
  • the sending unit is configured to send information according to the uplink scheduling allocation information through a Uu interface or a PC5 interface.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium is stored with computer executable instructions, and the computer executable instructions are configured to perform the configuration in the network side device as described in the embodiment of the present invention. Resource configuration method.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium is stored with computer executable instructions, and the computer executable instructions are configured to perform resource configuration in the terminal, which should be configured in the embodiment of the present invention. method.
  • the resource configuration method, the network side device, the terminal, and the computer storage medium provided by the embodiment of the present invention include: the network side device allocates the uplink resource of the low latency service by using the configuration or the reservation mode; and generates the uplink based on the allocated uplink resource. Scheduling information, and transmitting the uplink scheduling information.
  • the technical solution of the embodiment of the present invention is used to allocate uplink resources for a low-latency service (for example, a trigger service) in a pre-configured or reserved manner, and can be directly used when there is a communication demand for a low-latency service on the uplink.
  • the uplink resource request process is reduced, the request time of the uplink resource is shortened, and the control signaling overhead of the related uplink resource application and the network side device interaction is reduced, which satisfies the low delay requirement of the V2X communication.
  • FIG. 1 is a schematic diagram of an application scenario of the prior art
  • FIG. 3 is a schematic diagram of a downlink control channel according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a frame of an LTE system according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a physical resource block (PRB) of an LTE system according to an embodiment of the present invention
  • 6a and 6b are schematic diagrams of resource group division according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart diagram of a resource configuration method according to Embodiment 2 of the present invention.
  • FIG. 8 is a schematic structural diagram of a network side device according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a terminal of an embodiment of the present invention.
  • the embodiment of the invention provides a resource configuration method.
  • 2 is a schematic flowchart of a resource configuration method according to Embodiment 1 of the present invention; as shown in FIG. 2, the resource configuration method includes:
  • Step 201 The network side device allocates uplink resources of the low latency service by using a configuration or a reservation mode.
  • the network side device includes at least one of the following: an evolved base station (eNB), a relay station (RN), a cell coordination entity (MCE), a gateway (GW), and a mobility management device (MME).
  • eNB evolved base station
  • RN relay station
  • MCE cell coordination entity
  • GW gateway
  • MME mobility management device
  • an eNB is used as a network side device as an example for describing an evolved universal terrestrial radio access network (EUTRAN) operation management and maintenance (OAM) manager.
  • EUTRAN evolved universal terrestrial radio access network
  • OAM operation management and maintenance
  • the network side device allocates the uplink resource of the low-latency service by using the configuration or the reservation mode, and the network-side device allocates the remaining uplink resource to the low-latency service after allocating the uplink resource of the normal service; Or, the network side device allocates a part of the uplink resource to the low-latency service when the uplink resource is allocated; or the network-side device pre-configures the fixed uplink resource to be allocated to the low-latency service.
  • the fixed uplink resource is sent by using a broadcast message; or pre-configured by a predefined manner.
  • the fixed uplink resource may be located on a Physical Uplink Shared Channel (PUSCH), which may be a continuous or discontinuous allocation, and the generated uplink scheduling information may be sent by using a broadcast message;
  • PUSCH Physical Uplink Shared Channel
  • MCS Modulation and Coding Scheme
  • Step 202 Generate uplink scheduling information based on the allocated uplink resources, and send the uplink scheduling information.
  • the generating the uplink scheduling information based on the allocated uplink resource includes: generating at least one uplink scheduling information based on the allocated uplink resource.
  • the sending the uplink scheduling information includes: sending the uplink scheduling information by using a PDCCH.
  • FIG. 3 is a schematic diagram of a downlink control channel according to an embodiment of the present invention; as shown in FIG. 3, a Physical Control Format Indicator Channel (PCFICH) is used to indicate a control area size (ie, including several Orthogonal Frequency Division Multiplexing (OFDM) symbol; Physical Hybrid ARQ Indicator Channel (PHICH) is used to support Uplink Hybrid Automatic Repeat Request (HARQ); Physical Downlink Control Channel (PDCCH, Physical) Downlink Control Channel), the remaining resources in the control area after the PCFICH/PHICH is removed are used for the PDCCH, and the PDCCH is used to carry the uplink/downlink traffic channel resource allocation signaling, rate control signaling, etc., indicating how the uplink/downlink traffic channel works, and It is used to carry uplink power control signaling, which is collectively referred to as uplink/downlink scheduling information.
  • PCFICH Physical Control Format In
  • the uplink scheduling information of the uplink resource that includes the low-latency service sent by the network side device in the embodiment is carried by the PDCCH.
  • the smallest unit of frequency domain resource allocation is a resource block (RB, Resource Block), and a physical resource block corresponding to a physical resource (PRB, Physical Resource) Block).
  • a PRB contains 12 subcarriers in the frequency domain, corresponding to one slot in the time domain.
  • a resource corresponding to one subcarrier on each Orthogonal Frequency Division Multiplexing (OFDM) symbol is called a resource unit (RE, Resource Element), as shown in Figure 5.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the uplink scheduling information is sent in a preset format, and is scrambled based on the preset identifier.
  • the preset format includes: format0, format4, or format X.
  • the format X is a new format in the embodiment of the present invention; the format X includes at least a frequency domain resource indication and a time domain resource indication.
  • the frequency domain resource indicates a bitmap including an uplink bandwidth available resource group sequence number or a resource group sequence number of the transmission resource and a number of resource groups;
  • the time domain resource includes a subframe in which the frequency domain resource is available and a subsequent uplink subframe. The number of frames.
  • the existing format0/format4 can only indicate consecutive or two discontinuous resources, and cannot use the remaining resources well.
  • the indication mode 1 may be the bitmap mode of all the physical resource groups (RBGs), that is, the resources available for the uplink bandwidth are numbered 0 to N according to the group, and each group includes P PRBs. A resource is indicated by a bitmap. If the bit is indicated by a bit, the resource is allocated to the low-latency service user.
  • RBGs physical resource groups
  • the new formatX may indicate a plurality of non-contiguous subframe resources.
  • the existing format0 and format4 have fixed-time subframes, so there is no overhead of the time domain subframe.
  • the FDD UE receives the PDCCH in the subframe n.
  • the PUSCH is transmitted on the corresponding resource of the subframe n+4, and the TDD transmits the PUSCH on the corresponding resource of the subframe n+k when the subframe receives the PDCCH, and the k protocol is defined according to different configurations.
  • FormatX can be used for multiple data packet transmission or retransmission of low-latency services, that is, design parameter L, that is, if there is a parameter L, it means that for FDD, receiving PDCCH in subframe n is at n+4 and subsequent L-1.
  • the uplink resources of the subframes can be used for the transmission or retransmission of low-latency services.
  • a new formatX format is used for the resource indication mode 3, and a combination indication manner of the RBG start index and the RBG number is adopted.
  • the total number of resource blocks indicating the uplink system bandwidth is 25, and the resource blocks allocated to the UE are PRB 2, PRB 3, PRB 12, PRB 13, and PRB 24.
  • the at least one uplink scheduling information includes resource location information and control information for indicating the low latency service or different services.
  • the uplink scheduling information that is sent is one
  • the uplink scheduling information may be scrambled by using a preset identifier (for example, a V-RNTI), and used to represent the low-latency service.
  • a preset identifier for example, a V-RNTI
  • the uplink scheduling information is sent to at least two
  • the at least two uplink scheduling information may be respectively scrambled by using at least two preset identifiers, and each uplink scheduling information respectively represents different services.
  • the at least one preset identifier (for example, a V-RNTI) may be determined according to a service level, or determined according to a service data packet size, or determined by a user group, and the like.
  • the uplink scheduling information is configured to be the same or Send in different cycles.
  • the low-latency service may be an event-triggered service, such as a V2X event-triggered service.
  • an uplink resource is allocated for a low-latency service (that is, a trigger service) in a pre-configured or reserved manner, and can be directly used when the uplink has a low-latency service communication requirement, thereby reducing the uplink.
  • the resource request process shortens the request time of uplink resources.
  • the control signaling overhead of the related uplink resource application and the network side device interaction is reduced, and the low delay requirement of the V2X communication is satisfied.
  • the embodiment of the invention further provides a resource configuration method.
  • 4 is a schematic flowchart of a resource configuration method according to Embodiment 2 of the present invention; as shown in FIG. 4, the method includes:
  • Step 301 After receiving the trigger indication of the low-latency service, the terminal searches for and obtains uplink scheduling information.
  • the searching and obtaining the uplink scheduling information includes: searching a common search space of the PDCCH, or a specific search space of the terminal, or a dedicated search space of the low-latency service to obtain uplink scheduling information.
  • the dedicated search space of the low latency traffic may be a specific number of locations on a particular symbol.
  • the method further includes: descrambling the uplink scheduling information according to the preset identifier, and obtaining uplink scheduling allocation information of the low-latency service.
  • the uplink scheduling allocation information includes resource location information and control information.
  • the preset identifier is at least one set of wireless network temporary identifiers for the low latency service.
  • the wireless network temporary identifier may specifically be a wireless network temporary identifier (V-RNTI) for the low latency service.
  • V-RNTI can be obtained by pre-configuration in a predefined manner, or obtained by using a broadcast message, or by using an RRC letter when the terminal establishes a V2X link with the network side device. Get it.
  • the terminal After obtaining the V-RNTI, the terminal searches for the PDCCH after receiving the trigger indication of the low-latency service, or searches for a specific search space in the common search space, or the terminal, or the dedicated search of the low-delay service. Spatial search for available upstream scheduling information. After obtaining the uplink scheduling information, the V-RNTI performs decoding to obtain uplink scheduling allocation information.
  • Step 302 Determine uplink scheduling allocation information based on the uplink scheduling information, and send information according to the uplink scheduling allocation information.
  • an uplink resource is allocated for a low-latency service (that is, a trigger service) in a pre-configured or reserved manner, and can be directly used when the uplink has a low-latency service communication requirement, thereby reducing the uplink.
  • the resource request process shortens the request time of the uplink resource, reduces the control signaling overhead of the related uplink resource application and the network side device interaction, and satisfies the low delay requirement of the V2X communication.
  • the resource configuration method of the embodiment of the present invention is described in detail below with the network side device as the base station (eNB) and the terminal as the V2X terminal as an example.
  • the embodiment of the invention further provides a resource configuration method.
  • the V2X terminal performs information transmission based on the uplink resources pre-configured by the base station and based on the Uu link (ie, the link of the Vehicle to the eNodeB).
  • the base station sends the pre-configured related information, where the pre-configured related information may be carried by the PDCCH, where the format of the PDCCH may be format0, format4, or a new format formatX, and the PDCCH carrying the specific information is pre-defined.
  • V-RNTI scrambling the V-RNTI notifying the V2X terminal in the coverage area by using a broadcast message; or transmitting to the V2X terminal through RRC signaling when the V2X link is established by the base station and the V2X terminal; or It can be pre-configured in a predefined way.
  • the pre-configured related information includes a V-RNTI for descrambling the uplink scheduling information by the V2X terminal, and the number of the V-RNTIs may be at least one group.
  • the V2X terminal is in uplink synchronization, and needs to send uplink information to the base station, but has no uplink resources, and obtains uplink resources for communication through the uplink scheduling information (UL Grant) pre-configured by the base station.
  • the PDCCH may carry the uplink scheduling information of the uplink resource that is allocated by the base station to the low-latency service, where the uplink scheduling information may be carried by the PDCCH, and the carried information is DCI, and is used to indicate the uplink scheduling that the V2X terminal can use. Assign information.
  • the uplink scheduling information may be located in a common search space of the PDCCH, or a specific search space of the terminal, or a dedicated search space of the low latency service.
  • the format of the uplink scheduling information transmission may be format 0 or format 4; where format0 and format4 are used to indicate uplink resource configuration of the Uu link; and the format of the uplink scheduling information transmission may also be a new transmission.
  • a format such as format X
  • the format X includes at least a frequency domain resource indication and a time domain resource indication;
  • the frequency domain resource indicates a bitmap including an uplink bandwidth available resource group sequence number or a resource group sequence number and a resource group number of the sending resource;
  • the time domain resource includes the number of consecutive uplink subframes available to the frequency domain resource.
  • the specific information is as follows.
  • a new formatX format is used as the indication mode, which indicates mode 2, which uses a combination of the start index and the RBG number of the RBG.
  • the new formatX also includes conventional control information, such as modulation information (if there is unified modulation information or high-level signaling, there is no such field), power parameters and other control parameters.
  • modulation information if there is unified modulation information or high-level signaling, there is no such field
  • power parameters if there is unified modulation information or high-level signaling, there is no such field
  • Step 1 The base station notifies the V2X terminal in the coverage by using a system broadcast message, where the system broadcast message includes at least one group of V-RNTIs for blind detection;
  • the base station and the V2X terminal pre-configure at least one set of V-RNTIs in a predefined manner
  • the V2X terminal is notified by the RRC signaling to blindly detect at least one V-RNTI of the PDCCH;
  • the at least one V-RNTI may be determined according to a service level or determined according to a service data packet size or determined by a user group, or randomly selected at least one One V-RNTI in the V-RNTI selects the remaining V-RNTI after the selected V-RNTI is occupied.
  • Step 2 The V2X terminal obtains at least one set of V-RNTIs through system broadcast messages or pre-configured in a predefined manner or through RRC signaling.
  • Step 3 When the V2X terminal is ready to send uplink information, the PDCCH is blindly detected, and the specific search space in the common search space of the PDCCH or the V2X terminal or the dedicated search space of the low-latency service (for example, V2X triggered service) adopts format0.
  • the format 4 or the format X and the corresponding V-RNTI retrieve the available uplink scheduling information. If the CRC check succeeds, the V2X terminal knows that the information is required by itself, and further decodes the uplink scheduling information to obtain the uplink resource.
  • the V2X terminal may select the starting resource according to the indicated uplink resource size and the buffer state according to the predefined resource block in the indicated resource. For example, the resources specified by the low-latency service are further divided according to the sub-frame time domain and the post-frequency domain. Each resource is a predefined size or is known by the V-RNTI. The V2X terminal selects one of the resources as the uplink resource according to the random selection principle. Send information.
  • the pre-configured resource block is 190 RBs, and one subframe 16 PRB can be occupied.
  • the RNTI adopts V-RNTI1, and the resource configured by the PDCCH is one subframe 32 PRB, and the V2X terminal can select the upper half of the frequency domain resource of the resource block. Sending, or selecting the lower half of the frequency domain resource of its resource block for transmission;
  • the resource block of the pre-configured V-RNTI1 is 190B
  • the resource block of the V-RNTI is 300 RB
  • the V2X terminal selects an RNTI blind decoding to obtain the corresponding uplink resource according to the buffer status of the V2.
  • the multiple PDCCHs indicate multiple available uplink resources for low-latency services, and each PDCCH indicates one uplink resource for low-latency services; wherein the multiple PDCCHs may use the same V-RNTI, or Different V-RNTIs are used; different V-RNTIs can determine the correspondence according to the service level, or determine the correspondence according to the service packet size, or determine the correspondence according to the user group.
  • Step 4 The V2X terminal sends information on the selected uplink resource.
  • Step 5 The base station checks whether there is a V2X terminal-related low-latency service on the known uplink resource. If there is a V2X terminal-related low-latency service, the corresponding information is decoded according to the configured resource rule, and the packet is unicast after the packet is unicast. , multicast or broadcast to the desired user group.
  • the embodiment of the invention further provides a resource configuration method.
  • the V2X terminal performs information transmission based on the uplink resources pre-configured by the base station and based on the PC5 link (ie, the vehicle-to-vehicle link).
  • the base station sends the pre-configured related information, and the pre-configured related information may be sent by the PDCCH to the V2X terminal in the coverage area by using the broadcast message, or may be sent to the V2X through the RRC signaling when the V2X link is established by the base station and the V2X terminal. Terminal; or pre-configured in a predefined manner. Then the V2X terminal receives the pre-configured related information.
  • the pre-configured related information includes a V-RNTI for descrambling the uplink scheduling information by the V2X terminal, and the number of the V-RNTIs may be at least one group.
  • the V2X terminal is in the coverage of the base station, and the pre-configured uplink resource of the receiving base station is used to send information to other Vehicle users on the uplink PC5 link resource, which can be used for event-triggered emergency services, and can be applied for resources without using the base station.
  • the base station may carry, by using the PDCCH, uplink scheduling information that includes an uplink resource allocated by the base station for the low-latency service;
  • the uplink scheduling information may be carried by the PDCCH, and the carried information is DCI, and is used to indicate uplink scheduling allocation information that can be used by the V2X terminal.
  • the base station sends the uplink scheduling information to a V2X terminal.
  • the uplink scheduling information may be located in a common search space of the PDCCH, or a specific search space of the terminal, or a dedicated search space of the low-latency service.
  • the format used to indicate communication through the PC5 transmission interface is format 5, or a new transmission format, such as format X.
  • the specific implementation process includes:
  • the base station and the V2X terminal pre-configure at least one set of V-RNTIs in a predefined manner
  • the V2X terminal is notified by the RRC signaling to blindly detect at least one V-RNTI of the PDCCH;
  • the at least one V-RNTI may be determined according to a service level or determined according to a service data packet size or determined by a user group, or randomly selected one V-RNTI in the at least one V-RNTI. After the selected V-RNTI is occupied, the remaining V-RNTIs are selected.
  • Step 2 The V2X terminal obtains at least one set of V-RNTIs through system broadcast messages or pre-configured in a predefined manner or through RRC signaling.
  • Step 3 When the V2X terminal is ready to send uplink information, check the PDCCH, and search for the dedicated search space in the common search space of the PDCCH or the specific search space of the V2X terminal, or the low-latency service (for example, V2X triggered service). Uplink scheduling information; the V2X terminal decodes the uplink scheduling information by using the V-RNTI to obtain an uplink resource.
  • the uplink scheduling information may be in an existing format5 format. If obtained The V-RNTI is a common V-RNTI, indicating that the uplink resource included in the corresponding uplink scheduling information can be used by at least one V2X terminal. The V2X terminal may select the starting resource according to the indicated uplink resource size and the buffer state according to the predefined resource block in the indicated resource;
  • the multiple PDCCHs indicate multiple available uplink resources for low-latency services, and each PDCCH indicates one uplink resource for low-latency services; wherein the multiple PDCCHs may use the same V-RNTI, Different V-RNTIs may also be used; different V-RNTIs may determine correspondences according to service levels, or determine correspondences according to service data packet sizes, or determine correspondences according to user groups.
  • the new format format X can be specifically referred to in the third embodiment, and details are not described herein again.
  • the embodiment of the invention further provides a resource configuration method.
  • the V2X terminal is based on the uplink resource pre-configured by the base station, where the pre-configured uplink resource and the scheduling mode are known to the V2X terminal; and the uplink scheduled resource location is transmitted according to the modulation and coding mode configured by the base station.
  • the specific implementation process includes:
  • Step 1 The base station notifies the V2X terminal in the coverage by using a system broadcast message, where the system broadcast message is carried by a system information block (SIB), and the message includes uplink resource scheduling information.
  • SIB system information block
  • the base station and the V2X terminal obtain the uplink resource scheduling information configured by the base station for the low-latency service by using the S-RNTI descrambling common to the cell;
  • Step 3 When the V2X is ready to send uplink information, the uplink resource scheduling information configured in a predefined manner is used for information transmission; the transmitted information is scrambled by the V-RNTI.
  • Step 4 The base station checks whether there is a low delay associated with the V2X terminal on the known uplink resource.
  • the service if there is a low-latency service related to the V2X terminal, decodes the corresponding information according to the configured resource rule, and sends the packet to the required user group through unicast, multicast, or broadcast.
  • FIG. 5 is a schematic structural diagram of a network side device according to an embodiment of the present invention; as shown in FIG. 5, the network side device includes: an allocation module 51 and a sending module 52;
  • the sending module 52 is configured to send uplink scheduling information generated by the allocating module 51.
  • the network side device includes at least one of the following: an evolved base station (eNB), a relay station (RN), a cell coordination entity (MCE), a gateway (GW), and a mobility management device (MME).
  • eNB evolved base station
  • RN relay station
  • MCE cell coordination entity
  • GW gateway
  • MME mobility management device
  • an eNB is used as a network side device as an example for describing an evolved universal terrestrial radio access network (EUTRAN) operation management and maintenance (OAM) manager.
  • EUTRAN evolved universal terrestrial radio access network
  • OAM operation management and maintenance
  • the allocating module 51 is configured to: after allocating the uplink resource of the normal service, allocate the remaining uplink resource to the low-latency service, and generate at least one uplink scheduling information based on the allocated uplink resource; or, in the allocation When the uplink resource is allocated, the reserved uplink resource is allocated to the low-latency service, and the at least one uplink scheduling information is generated based on the allocated uplink resource; or the fixed uplink resource is pre-configured to be allocated to the low-latency service, based on the allocated uplink.
  • the resource generates at least one uplink scheduling information.
  • the fixed uplink resource generates at least one uplink scheduling information to be sent by using a broadcast message; or, the uplink scheduling information of the fixed uplink resource is pre-configured in a predefined manner.
  • the sending module 52 is configured to send the uplink scheduling information by using a PDCCH, where the uplink scheduling information is sent in a preset format, and is scrambled based on the preset identifier.
  • the preset format includes: format0, format4, or format X.
  • the format X is a new format in the embodiment of the present invention; the format X includes at least a frequency domain resource indication and a time domain resource indication; the frequency domain resource indication includes a bitmap of an uplink bandwidth available resource group sequence number or a resource group of a transmission resource. The sequence number and the number of resource groups; the time domain resource includes the number of consecutive uplink subframes available to the frequency domain resource.
  • Mode 1 is that each group can contain the same number of PRBs, that is, each set contains the same P.
  • the total number of resource blocks of the uplink system bandwidth is 25, and the resource blocks allocated to the UE are PRB2 and PRB. 3.
  • Mode 2 may also define that each resource group includes a different PRB, as shown in FIG. 6(b), the indication mode is a bitmap of the set index index, and the resource blocks allocated to the UE are PRB 2, PRB 3, and PRB4, and the corresponding bitmap indication is 010000. . This reduces resource indication overhead, but requires notification of the type of its resource group by broadcast or by predefined means.
  • the new formatX can indicate contiguous subframe resources.
  • the existing format0 and format4 have their fixed time mode in the time domain subframe, so there is no overhead of the time domain subframe, such as the FDD mode UE.
  • the sub-frame n receives the PDCCH, and transmits the PUSCH on the corresponding resource of the subframe n+4, and the TDD transmits the PUSCH on the corresponding resource of the subframe n+k when the subframe receives the PDCCH, and the k protocol is defined according to different configurations.
  • FormatX can be used for multiple data packet transmission or retransmission of low-latency services, that is, design parameter L, that is, if there is a parameter L, it means that for FDD, receiving PDCCH in subframe n is at n+4 and subsequent L-1.
  • the uplink resources of the subframes can be used for the transmission or retransmission of low-latency services.
  • a new formatX format is used for the resource indication mode 3, and a combination indication manner of the RBG start index and the RBG number is adopted.
  • the total number of resource blocks indicating the uplink system bandwidth is 25, and the resource blocks allocated to the UE are PRB 2, PRB 3, PRB 12, PRB 13, and PRB 24.
  • the uplink scheduling information may be carried by the PDCCH, and the information carried by the PDCCH is the uplink DCI, and the uplink scheduling information is used by the DCI format format 0, format 4, and the format 5 for the D2D communication.
  • the format X format is sent.
  • the preset identifier is at least one set of wireless network temporary identifiers for the low latency service.
  • the wireless network temporary identifier may specifically be a wireless network temporary identifier (V-RNTI) for the low delay service.
  • the V-RNTI can be pre-configured in a predefined manner, or sent to the terminal through a broadcast message, or through the RRC when the terminal establishes a V2X link with the network side device.
  • the signaling module may be configured to: the sending module 52 is further configured to send the preset identifier by using a broadcast message before sending the uplink scheduling information; or send the preset identifier by using RRC signaling; or
  • the allocating module 51 is configured to pre-configure the preset identifier in a predefined manner.
  • the low-latency service may be an event-triggered service, such as a V2X event-triggered service.
  • the allocation module 51 in the network side device may be implemented by a central processing unit (CPU, Central Processing Unit) and a digital signal processor (DSP, Digital Signal Processor) in the network side device. Or a Field-Programmable Gate Array (FPGA) implementation; the transmitting module 52 in the network side device may be implemented by a transmitting antenna or a transmitter in the network side device in an actual application.
  • CPU Central Processing Unit
  • DSP Digital Signal Processor
  • FPGA Field-Programmable Gate Array
  • FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention; as shown in FIG. 6, the terminal includes: an obtaining unit 61, a processing unit 62, and a sending unit 63;
  • the obtaining unit 61 is configured to: after receiving the trigger indication of the low-delay service, search and obtain uplink scheduling information;
  • the processing unit 62 is configured to determine uplink scheduling allocation information based on the uplink scheduling information obtained by the obtaining unit 61;
  • the sending unit 63 is configured to send information according to the uplink scheduling allocation information determined by the processing unit 62.
  • the obtaining unit 61 is configured to search for a common search space of the PDCCH, or a specific search space of the terminal, or a dedicated search space of the low-latency service to obtain uplink scheduling information.
  • the obtaining unit 61 is further configured to obtain a preset identifier by using a broadcast message before obtaining the uplink scheduling information, or obtain a preset identifier by using RRC signaling;
  • the processing unit 62 is configured to descramble the uplink scheduling information based on the preset identifier obtained by the obtaining unit 61, to obtain an uplink resource of the low-latency service, or configured as a pre-configured preset identifier.
  • the uplink scheduling information is descrambled to obtain uplink scheduling allocation information of the low-latency service.
  • the preset identifier is at least one set of wireless network temporary identifiers for the low latency service.
  • the wireless network temporary identifier may specifically be a wireless network temporary identifier (V-RNTI) for the low delay service.
  • V-RNTI can be obtained by pre-configuration in a predefined manner, or obtained by using a broadcast message, or by using an RRC letter when the terminal establishes a V2X link with the network side device. Get it.
  • the terminal After obtaining the V-RNTI, the terminal searches for the PDCCH after receiving the trigger indication of the low-latency service, and searches for a dedicated search space in the common search space, or the specific search space of the terminal, or the low-latency service.
  • Upstream scheduling information After obtaining the uplink scheduling information, the V-RNTI performs decoding to obtain uplink scheduling allocation information to perform information transmission.
  • the sending unit 63 may allocate information according to the uplink scheduling through a Uu interface.
  • the network side device for example, an eNB
  • the functions of the processing units in the terminal of the embodiment of the present invention may be understood by referring to the related description of the foregoing resource configuration method, and the processing units in the terminal in the embodiment of the present invention may implement the embodiments of the present invention.
  • the function of the analog circuit is implemented, and can also be implemented by running the software of the function described in the embodiment of the present invention on the smart terminal.
  • the obtaining unit 61 and the processing unit 62 in the terminal may be implemented by a CPU, a DSP or an FPGA in the terminal in an actual application; the sending unit 63 in the terminal may be used in an actual application.
  • the transmit antenna or transmitter in the terminal is implemented.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the device is implemented in a flow chart A function specified in a block or blocks of a process or multiple processes and/or block diagrams.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • the technical solution of the embodiment of the present invention allocates uplink resources for low-latency services (for example, triggering services) in a pre-configured or reserved manner, and can be directly used when the uplink has low-latency service communication requirements, thereby reducing uplink resources.
  • the request process shortens the request time of the uplink resource, reduces the control signaling overhead of the related uplink resource application and the network side device interaction, and satisfies the low delay requirement of the V2X communication.

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Abstract

Disclosed in embodiments of the present invention are a resource allocation method, network side device, terminal, and computer storage medium. The method comprises: a network side device allocates an uplink resource of a low-latency service by means of configuration or reservation; and the network side device generates uplink scheduling information on the basis of the allocated uplink resource, and transmits the uplink scheduling information.

Description

一种资源配置方法、网络侧设备、终端及计算机存储介质Resource configuration method, network side device, terminal and computer storage medium 技术领域Technical field
本发明涉及无线通信技术,具体涉及一种资源配置方法、网络侧设备、终端及计算机存储介质。The present invention relates to a wireless communication technology, and in particular, to a resource configuration method, a network side device, a terminal, and a computer storage medium.
背景技术Background technique
车对外界(V2X,Vehicle-to-X)包括车对车(V2V,Vehicle-to-Vehicle)、车对设备(V2I/N,Vehicle-to-Infrastructure/Network)以及车对人(V2P,Vehicle-to-Pedestrian)。V2X通信与版本12(R12,Release 12)中的终端对终端(D2D,Device-to-Device)通信的不同之处在于移动速度提高、用户密集程度增加、可靠性要求高,实时响应等特点,而常规D2D通信不必考虑上述高需求,因此,D2D通信的现有机制不能满足V2X通信的需求,必须依照V2X的特点进行优化。Vehicle-to-the-air (V2X, Vehicle-to-X) includes V2V, Vehicle-to-Vehicle, Vehicle-to-Infrastructure/Network (V2I/N, Vehicle-to-Infrastructure/Network), and Vehicle-to-Person (V2P, Vehicle) -to-Pedestrian). The difference between V2X communication and the device-to-device (D2D) communication in version 12 (R12, Release 12) is that the moving speed is increased, the user density is increased, the reliability requirement is high, and the real-time response is characterized. However, the conventional D2D communication does not have to consider the above high demand. Therefore, the existing mechanism of D2D communication cannot meet the requirements of V2X communication, and must be optimized according to the characteristics of V2X.
对于基于Uu接口的V2X,图1为现有技术的应用场景示意图;如图1所示,用户设备(UE,User Equipment)首先在上行链路(UL)发送一个V2X信息给演进的统一陆地无线接入网络(E-UTRAN,Evolved Universal Terrestrial Radio Access Network),然后E-UTRAN将这个V2X信息在下行链路(DL)发送给多个覆盖内的UE。对于现有长期演进(LTE,Long Term Evolution)网络UE的上行数据发送通常是由演进型基站(eNB,eNodeB)通过动态调度或半静态调度,在UE有上行数据发送时,在没有上行调度信息(UL grant)时通常通过上行调度(SR)请求,告诉eNB有上行数据请求,eNB收到SR请求后,通常会分配足够UE发送缓冲状态报告(BSR,Buffer Status Report)的资源,然后UE在通过上行BSR告诉eNodeB其上行缓冲(buffer)里有多少数据发送,以便eNB决定给该UE分配多少上行 资源。对于V2X业务需求,特别是事件触发业务,其业务要求触发后即刻相应,时延要求极高,而目前机制其资源请求过程占据了较长时间。因此,如何减少基于Uu接口的V2X低时延业务的接入时延,满足V2X通信的需求,现有技术中目前暂无有效解决方案。For the U2 interface-based V2X, FIG. 1 is a schematic diagram of an application scenario of the prior art; as shown in FIG. 1, a user equipment (UE, User Equipment) first sends a V2X information to an evolved unified terrestrial radio in an uplink (UL). An E-UTRAN (Evolved Universal Terrestrial Radio Access Network), and then the E-UTRAN transmits this V2X information on the downlink (DL) to multiple UEs within the coverage. The uplink data transmission of the existing long-term evolution (LTE) network UE is usually performed by the evolved base station (eNB, eNodeB) through dynamic scheduling or semi-persistent scheduling. When the UE has uplink data transmission, there is no uplink scheduling information. (UL grant) usually sends an uplink data request by the uplink scheduling (SR) request. After receiving the SR request, the eNB usually allocates sufficient resources for the UE to send a buffer status report (BSR), and then the UE is The uplink BSR tells the eNodeB how much data is sent in the buffer, so that the eNB decides how much uplink to allocate to the UE. Resources. For V2X business requirements, especially event-triggered services, the business requirements are immediately after the trigger, and the delay requirements are extremely high, while the current mechanism's resource request process takes a long time. Therefore, how to reduce the access delay of the V2X low-latency service based on the Uu interface and meet the requirements of the V2X communication, there is currently no effective solution in the prior art.
发明内容Summary of the invention
为解决现有存在的技术问题,本发明实施例提供一种资源配置方法、网络侧设备、终端及计算机存储介质。To solve the existing technical problems, the embodiments of the present invention provide a resource configuration method, a network side device, a terminal, and a computer storage medium.
为达到上述目的,本发明实施例的技术方案是这样实现的:To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows:
本发明实施例提供了一种资源配置方法,所述方法包括:The embodiment of the invention provides a resource configuration method, and the method includes:
网络侧设备通过配置或预留方式分配低延迟业务的上行资源;The network side device allocates uplink resources of the low delay service by using a configuration or a reservation manner;
基于分配的上行资源生成上行调度信息,发送所述上行调度信息。And generating uplink scheduling information based on the allocated uplink resource, and sending the uplink scheduling information.
在一实施例中,所述网络侧设备通过配置或预留方式分配低延迟业务的上行资源,基于分配的上行资源生成上行调度信息,包括:In an embodiment, the network side device allocates the uplink resource of the low-latency service by using the configuration or the reservation mode, and generates the uplink scheduling information based on the allocated uplink resource, including:
网络侧设备在分配常规业务的上行资源后,将剩余的上行资源分配给所述低延迟业务,基于分配的上行资源生成至少一个上行调度信息;After the network side device allocates the uplink resource of the normal service, the network device allocates the remaining uplink resource to the low-latency service, and generates at least one uplink scheduling information based on the allocated uplink resource.
或者,网络侧设备在分配上行资源时,预留部分上行资源分配给所述低延迟业务,基于分配的上行资源生成至少一个上行调度信息;Or, when the network side device allocates the uplink resource, the part of the uplink resource is reserved for the low-latency service, and the at least one uplink scheduling information is generated according to the allocated uplink resource;
或者,网络侧设备预先配置固定上行资源分配给所述低延迟业务,基于分配的上行资源生成至少一个上行调度信息。Alternatively, the network side device pre-configures the fixed uplink resource allocation to the low-latency service, and generates at least one uplink scheduling information based on the allocated uplink resource.
在一实施例中,所述发送所述上行调度信息,包括:In an embodiment, the sending the uplink scheduling information includes:
通过物理下行控制信道(PDCCH,Physical Downlink Control Channel)发送所述上行调度信息;其中,所述上行调度信息按预设格式发送,基于预设标识加扰。The uplink scheduling information is sent by using a Physical Downlink Control Channel (PDCCH), where the uplink scheduling information is sent in a preset format and is scrambled based on the preset identifier.
在一实施例中,所述上行调度信息的预设格式包括:format0、format4或format X; In an embodiment, the preset format of the uplink scheduling information includes: format0, format4, or format X;
其中,所述format X至少包括频域资源指示和时域资源指示;The format X includes at least a frequency domain resource indication and a time domain resource indication.
所述频域资源指示包括上行带宽可用资源组序号的位图(bitmap)或者发送资源的资源组序号及资源组个数;The frequency domain resource indicates a bitmap including an uplink bandwidth available resource group number or a resource group serial number and a resource group number of the sending resource;
所述时域资源包括所述频域资源可用的连续上行子帧个数。The time domain resource includes the number of consecutive uplink subframes available to the frequency domain resource.
在一实施例中,所述预设标识为至少一组用于所述低延迟业务的无线网络临时标识。In an embodiment, the preset identifier is at least one set of wireless network temporary identifiers for the low latency service.
在一实施例中,所述发送所述上行调度信息之前,所述方法还包括:通过广播消息发送所述预设标识;In an embodiment, before the sending the uplink scheduling information, the method further includes: sending the preset identifier by using a broadcast message;
或者,通过无线资源控制(RRC,Radio Resource Control)信令发送所述预设标识;Or sending the preset identifier by using a radio resource control (RRC) signaling;
或者,通过预定义方式预先配置所述预设标识。Alternatively, the preset identifier is pre-configured in a predefined manner.
在一实施例中,所述至少一个上行调度信息中包括用于指示所述低延迟业务或不同业务的资源位置信息和控制信息。In an embodiment, the at least one uplink scheduling information includes resource location information and control information for indicating the low latency service or different services.
在一实施例中,当所述上行调度信息由不同的预设标识加扰时,所述上行调度信息为相同或不同的周期发送。In an embodiment, when the uplink scheduling information is scrambled by different preset identifiers, the uplink scheduling information is sent in the same or different period.
在一实施例中,所述固定上行资源生成至少一个上行调度信息通过广播消息发送;In an embodiment, the fixed uplink resource generates at least one uplink scheduling information and is sent by using a broadcast message;
或者,通过预定义方式预先配置固定上行资源的上行调度信息。Alternatively, the uplink scheduling information of the fixed uplink resource is pre-configured in a predefined manner.
本发明实施例还提供了一种资源配置方法,所述方法包括:终端接收到低延迟业务的触发指示后,搜索并获得上行调度信息;An embodiment of the present invention further provides a resource configuration method, where the method includes: after receiving a trigger indication of a low-latency service, the terminal searches for and obtains uplink scheduling information;
基于所述上行调度信息确定上行调度分配信息,按所述上行调度分配信息发送信息。And determining, according to the uplink scheduling information, uplink scheduling allocation information, and transmitting information according to the uplink scheduling allocation information.
在一实施例中,所述搜索并获得上行调度信息,包括:In an embodiment, the searching and obtaining uplink scheduling information includes:
搜索PDCCH的公共搜索空间、或所述终端的特定搜索空间、或所述低延迟业务的专用搜索空间获得上行调度信息。 Searching for a common search space of the PDCCH, or a specific search space of the terminal, or a dedicated search space of the low-latency service obtains uplink scheduling information.
在一实施例中,所述获得上行调度信息之前,所述方法还包括:所述终端通过广播消息获得预设标识;或者通过RRC信令获得预设标识;或者获得通过预定义方式预先配置的预设标识;In an embodiment, before the obtaining the uplink scheduling information, the method further includes: the terminal obtaining a preset identifier by using a broadcast message; or obtaining a preset identifier by using RRC signaling; or obtaining a pre-configured manner by using a predefined manner. Default identifier
所述获得上行调度信息之后,所述方法还包括:基于所述预设标识解扰所述上行调度信息,获得所述低延迟业务的上行调度分配信息。After the obtaining the uplink scheduling information, the method further includes: descrambling the uplink scheduling information based on the preset identifier, and obtaining uplink scheduling allocation information of the low-latency service.
在一实施例中,所述按所述上行调度分配信息发送信息包括:所述终端按所述上行调度分配信息通过Uu接口或PC5接口发送信息。In an embodiment, the sending information according to the uplink scheduling allocation information includes: the terminal sending information according to the uplink scheduling allocation information through a Uu interface or a PC5 interface.
本发明实施例还提供了一种网络侧设备,所述网络侧设备包括:分配模块和发送模块;其中,The embodiment of the present invention further provides a network side device, where the network side device includes: an allocation module and a sending module;
所述分配模块,配置为通过配置或预留方式分配低延迟业务的上行资源;基于分配的上行资源生成上行调度信息;The allocation module is configured to allocate an uplink resource of the low-latency service by using a configuration or a reservation mode, and generate uplink scheduling information based on the allocated uplink resource;
所述发送模块,配置为发送所述分配模块生成的上行调度信息。The sending module is configured to send uplink scheduling information generated by the allocation module.
在一实施例中,所述分配模块,配置为在分配常规业务的上行资源后,将剩余的上行资源分配给所述低延迟业务,基于分配的上行资源生成至少一个上行调度信息;In an embodiment, the allocating module is configured to: after allocating the uplink resource of the normal service, allocate the remaining uplink resource to the low-latency service, and generate at least one uplink scheduling information based on the allocated uplink resource;
或者,在分配上行资源时,预留部分上行资源分配给所述低延迟业务,基于分配的上行资源生成至少一个上行调度信息;Or, when the uplink resource is allocated, the reserved uplink resource is allocated to the low-latency service, and the at least one uplink scheduling information is generated based on the allocated uplink resource;
或者,预先配置固定上行资源分配给所述低延迟业务,基于分配的上行资源生成至少一个上行调度信息。Alternatively, the fixed uplink resource is allocated to the low-latency service, and at least one uplink scheduling information is generated based on the allocated uplink resource.
在一实施例中,所述发送模块,配置为通过PDCCH发送所述上行调度信息;其中,所述上行调度信息按预设格式发送,基于预设标识加扰。In an embodiment, the sending module is configured to send the uplink scheduling information by using a PDCCH, where the uplink scheduling information is sent in a preset format, and is scrambled based on the preset identifier.
在一实施例中,所述预设格式包括:format0、format4或format X;In an embodiment, the preset format includes: format0, format4, or format X;
其中,所述format X至少包括频域资源指示和时域资源指示;The format X includes at least a frequency domain resource indication and a time domain resource indication.
所述频域资源指示包括上行带宽可用资源组序号的bitmap或者发送资源的资源组序号及资源组个数; The frequency domain resource indicates a bitmap including an uplink bandwidth available resource group sequence number or a resource group serial number and a resource group number of the sending resource;
所述时域资源包括所述频域资源可用的连续上行子帧个数。The time domain resource includes the number of consecutive uplink subframes available to the frequency domain resource.
在一实施例中,所述预设标识为至少一组用于所述低延迟业务的无线网络临时标识。In an embodiment, the preset identifier is at least one set of wireless network temporary identifiers for the low latency service.
在一实施例中,所述发送模块,还配置为发送所述上行调度信息之前,通过广播消息发送所述预设标识;或者,通过RRC信令发送所述预设标识;In an embodiment, the sending module is further configured to: send the preset identifier by using a broadcast message before sending the uplink scheduling information; or send the preset identifier by using RRC signaling;
或者,所述分配模块,配置为通过预定义方式预先配置所述预设标识。Alternatively, the allocation module is configured to pre-configure the preset identifier in a predefined manner.
在一实施例中,所述至少一个上行调度信息中包括用于指示所述低延迟业务或不同业务的资源位置信息和控制信息。In an embodiment, the at least one uplink scheduling information includes resource location information and control information for indicating the low latency service or different services.
在一实施例中,当所述上行调度信息由不同的预设标识加扰时,所述上行调度信息为相同或不同的周期发送。In an embodiment, when the uplink scheduling information is scrambled by different preset identifiers, the uplink scheduling information is sent in the same or different period.
在一实施例中,所述固定上行资源生成至少一个上行调度信息通过广播消息发送;In an embodiment, the fixed uplink resource generates at least one uplink scheduling information and is sent by using a broadcast message;
或者,通过预定义方式预先配置固定上行资源的上行调度信息。Alternatively, the uplink scheduling information of the fixed uplink resource is pre-configured in a predefined manner.
本发明实施例还提供了一种终端,所述终端包括:获得单元、处理单元和发送单元;其中,The embodiment of the present invention further provides a terminal, where the terminal includes: an obtaining unit, a processing unit, and a sending unit;
所述获得单元,配置为接收到低时延业务的触发指示后,搜索并获得上行调度信息;The obtaining unit is configured to: after receiving the trigger indication of the low-latency service, search and obtain uplink scheduling information;
所述处理单元,配置为基于所述获得单元获得的所述上行调度信息确定上行调度分配信息;The processing unit is configured to determine uplink scheduling allocation information based on the uplink scheduling information obtained by the obtaining unit;
所述发送单元,配置为按所述处理单元确定的上行调度分配信息发送信息。The sending unit is configured to send information according to an uplink scheduling allocation information determined by the processing unit.
在一实施例中,所述获得单元,配置为搜索PDCCH的公共搜索空间、或所述终端的特定搜索空间、或所述低延迟业务的专用搜索空间获得上行调度信息。In an embodiment, the obtaining unit is configured to search for a common search space of the PDCCH, or a specific search space of the terminal, or a dedicated search space of the low-latency service to obtain uplink scheduling information.
在一实施例中,所述获得单元,还配置为获得上行调度信息之前,通 过广播消息获得预设标识;或者通过RRC信令获得预设标识;In an embodiment, the obtaining unit is further configured to: before obtaining uplink scheduling information, Obtaining a preset identifier by using a broadcast message; or obtaining a preset identifier by using RRC signaling;
相应的,所述处理单元,配置为基于所述获得单元获得的预设标识解扰所述上行调度信息,获得所述低延迟业务的上行调度分配信息;或者配置为预先配置的预设标识解扰所述上行调度信息,获得所述低时延业务的上行调度分配信息。Correspondingly, the processing unit is configured to descramble the uplink scheduling information based on the preset identifier obtained by the obtaining unit, to obtain uplink scheduling allocation information of the low-latency service, or configured as a pre-configured preset identifier solution. The uplink scheduling information is scrambled to obtain uplink scheduling allocation information of the low-latency service.
在一实施例中,所述发送单元,配置为按所述上行调度分配信息通过Uu接口或PC5接口发送信息。In an embodiment, the sending unit is configured to send information according to the uplink scheduling allocation information through a Uu interface or a PC5 interface.
本发明实施例还提供了一种计算机存储介质,所述计算机存储介质中存储有计算机可执行指令,所述计算机可执行指令配置为执行本发明实施例所述的应配置为网络侧设备中的资源配置方法。The embodiment of the present invention further provides a computer storage medium, where the computer storage medium is stored with computer executable instructions, and the computer executable instructions are configured to perform the configuration in the network side device as described in the embodiment of the present invention. Resource configuration method.
本发明实施例还提供了一种计算机存储介质,所述计算机存储介质中存储有计算机可执行指令,所述计算机可执行指令配置为执行本发明实施例所述的应配置为终端中的资源配置方法。The embodiment of the present invention further provides a computer storage medium, where the computer storage medium is stored with computer executable instructions, and the computer executable instructions are configured to perform resource configuration in the terminal, which should be configured in the embodiment of the present invention. method.
本发明实施例提供的资源配置方法、网络侧设备、终端及计算机存储介质,所述方法包括:网络侧设备通过配置或预留方式分配低时延业务的上行资源;基于分配的上行资源生成上行调度信息,发送所述上行调度信息。如此,采用本发明实施例的技术方案,通过预先配置或者预留的方式为低时延业务(例如,触发型业务)分配上行资源,在上行有低时延业务的通信需求时可以直接使用,减少了上行资源请求过程,缩短了上行资源的请求时间,减少了相关上行资源申请与网络侧设备交互的控制信令开销,满足了V2X通信的低时延需求。The resource configuration method, the network side device, the terminal, and the computer storage medium provided by the embodiment of the present invention include: the network side device allocates the uplink resource of the low latency service by using the configuration or the reservation mode; and generates the uplink based on the allocated uplink resource. Scheduling information, and transmitting the uplink scheduling information. In this way, the technical solution of the embodiment of the present invention is used to allocate uplink resources for a low-latency service (for example, a trigger service) in a pre-configured or reserved manner, and can be directly used when there is a communication demand for a low-latency service on the uplink. The uplink resource request process is reduced, the request time of the uplink resource is shortened, and the control signaling overhead of the related uplink resource application and the network side device interaction is reduced, which satisfies the low delay requirement of the V2X communication.
附图说明DRAWINGS
图1为现有技术的应用场景示意图;FIG. 1 is a schematic diagram of an application scenario of the prior art;
图2为本发明实施例一的资源配置方法的流程示意图;2 is a schematic flowchart of a resource configuration method according to Embodiment 1 of the present invention;
图3为本发明实施例的下行控制信道的示意图; 3 is a schematic diagram of a downlink control channel according to an embodiment of the present invention;
图4为本发明实施例的LTE系统帧结构示意图;4 is a schematic structural diagram of a frame of an LTE system according to an embodiment of the present invention;
图5为本发明实施例的LTE系统物理资源块(PRB)结构示意图;FIG. 5 is a schematic structural diagram of a physical resource block (PRB) of an LTE system according to an embodiment of the present invention;
图6a和图6b为本发明实施例的资源组划分示意图;6a and 6b are schematic diagrams of resource group division according to an embodiment of the present invention;
图7为本发明实施例二的资源配置方法的流程示意图;FIG. 7 is a schematic flowchart diagram of a resource configuration method according to Embodiment 2 of the present invention;
图8为本发明实施例的网络侧设备的组成结构示意图;FIG. 8 is a schematic structural diagram of a network side device according to an embodiment of the present invention;
图9为本发明实施例的终端的组成结构示意图。FIG. 9 is a schematic structural diagram of a terminal of an embodiment of the present invention.
具体实施方式detailed description
下面结合附图及具体实施例对本发明作进一步详细的说明。The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
实施例一 Embodiment 1
本发明实施例提供了一种资源配置方法。图2为本发明实施例一的资源配置方法的流程示意图;如图2所示,所述资源配置方法包括:The embodiment of the invention provides a resource configuration method. 2 is a schematic flowchart of a resource configuration method according to Embodiment 1 of the present invention; as shown in FIG. 2, the resource configuration method includes:
步骤201:网络侧设备通过配置或预留方式分配低时延业务的上行资源。Step 201: The network side device allocates uplink resources of the low latency service by using a configuration or a reservation mode.
本实施例中,所述网络侧设备包括以下设备中的至少之一:演进型基站(eNB)、中继站(RN)、小区协作实体(MCE)、网关(GW)、移动性管理设备(MME)、演进型通用陆地无线接入网(EUTRAN)操作管理及维护(OAM)管理器等等,在本发明各实施例中以eNB作为网络侧设备为例进行说明。In this embodiment, the network side device includes at least one of the following: an evolved base station (eNB), a relay station (RN), a cell coordination entity (MCE), a gateway (GW), and a mobility management device (MME). In the embodiment of the present invention, an eNB is used as a network side device as an example for describing an evolved universal terrestrial radio access network (EUTRAN) operation management and maintenance (OAM) manager.
这里,所述网络侧设备通过配置或预留方式分配低时延业务的上行资源,包括:网络侧设备在分配常规业务的上行资源后,将剩余的上行资源分配给所述低时延业务;或者,网络侧设备在分配上行资源时,预留部分上行资源分配给所述低时延业务;或者,网络侧设备预先配置固定上行资源分配给所述低时延业务。Here, the network side device allocates the uplink resource of the low-latency service by using the configuration or the reservation mode, and the network-side device allocates the remaining uplink resource to the low-latency service after allocating the uplink resource of the normal service; Or, the network side device allocates a part of the uplink resource to the low-latency service when the uplink resource is allocated; or the network-side device pre-configures the fixed uplink resource to be allocated to the low-latency service.
其中,所述固定上行资源通过广播消息发送;或者,通过预定义方式预先配置。 The fixed uplink resource is sent by using a broadcast message; or pre-configured by a predefined manner.
具体的,所述固定上行资源可以位于上行资源物理上行共享信道(PUSCH,Physical Uplink Shared Channel)上,可以是连续或不连续分配,其生成的上行调度信息可以采用广播消息发送;或者,通过预定义方式预先配置,也可以部分信息如调制与编码策略(MCS,Modulation and Coding Scheme)由用户根据资源配置大小及缓冲(buffer)状态进行选择。Specifically, the fixed uplink resource may be located on a Physical Uplink Shared Channel (PUSCH), which may be a continuous or discontinuous allocation, and the generated uplink scheduling information may be sent by using a broadcast message; The definition mode is pre-configured, and part of the information, such as the Modulation and Coding Scheme (MCS), is selected by the user according to the resource configuration size and the buffer status.
步骤202:基于分配的上行资源生成上行调度信息,发送所述上行调度信息。Step 202: Generate uplink scheduling information based on the allocated uplink resources, and send the uplink scheduling information.
这里,所述基于分配的上行资源生成上行调度信息,包括:基于分配的上行资源生成至少一个上行调度信息。The generating the uplink scheduling information based on the allocated uplink resource includes: generating at least one uplink scheduling information based on the allocated uplink resource.
本实施例中,所述发送所述上行调度信息,包括:通过PDCCH发送所述上行调度信息。具体的,图3为本发明实施例的下行控制信道的示意图;可参照图3所示,其中,物理控制格式指示信道(PCFICH,Physical Control Format Indicator Channel)用于指示控制区域大小(即包括几个正交频分复用(OFDM)符号);物理混合自动重传指示信道(PHICH,Physical Hybrid ARQ Indicator Channel)用于支持上行混合自动重传请求(HARQ);物理下行控制信道(PDCCH,Physical Downlink Control Channel),控制区域内去除PCFICH/PHICH后剩下的资源用于PDCCH,PDCCH用于承载上/下行业务信道资源分配信令、速率控制信令等指示上/下行业务信道如何工作,还用于承载上行功控信令,统称为上/下行调度信息。基于此,本实施例中所述网络侧设备发送的包含有所述低延迟业务的上行资源的上行调度信息通过PDCCH承载。具体的,PDCCH的资源分配以控制信道单元(CCE,Control Channel Element)为单位,1个CCE=9资源元素组(REG,Resource Element Group)=36资源元素(RE,Resource Element)=72bits。In this embodiment, the sending the uplink scheduling information includes: sending the uplink scheduling information by using a PDCCH. Specifically, FIG. 3 is a schematic diagram of a downlink control channel according to an embodiment of the present invention; as shown in FIG. 3, a Physical Control Format Indicator Channel (PCFICH) is used to indicate a control area size (ie, including several Orthogonal Frequency Division Multiplexing (OFDM) symbol; Physical Hybrid ARQ Indicator Channel (PHICH) is used to support Uplink Hybrid Automatic Repeat Request (HARQ); Physical Downlink Control Channel (PDCCH, Physical) Downlink Control Channel), the remaining resources in the control area after the PCFICH/PHICH is removed are used for the PDCCH, and the PDCCH is used to carry the uplink/downlink traffic channel resource allocation signaling, rate control signaling, etc., indicating how the uplink/downlink traffic channel works, and It is used to carry uplink power control signaling, which is collectively referred to as uplink/downlink scheduling information. Based on this, the uplink scheduling information of the uplink resource that includes the low-latency service sent by the network side device in the embodiment is carried by the PDCCH. Specifically, the resource allocation of the PDCCH is in units of a Control Channel Element (CCE, Control Channel Element), and one CCE=9 Resource Element Group (REG) = 36 Resource Element (RE, Resource Element)=72 bits.
在本实施例中,图4为本发明实施例的LTE系统帧结构示意图;图5为本发明实施例的LTE系统物理资源块(PRB)结构示意图。所述上行资 源如图4和图5所示,在LTE系统中,无线资源在时域上以无线帧为单位划分资源,每个无线帧为10ms,包含10个子帧。每个子帧为1ms,分为0.5ms的2个时隙(slot),如图4所示。在频域上,以子载波为单位划分资源,每个子载波包含15kHz。在频率方向,资源以子载波(subcarrier)为单位划分,具体在通信中,频域资源分配的最小单位是资源块(RB,Resource Block),对应物理资源的一个物理资源块(PRB,Physical Resource Block)。一个PRB在频域包含12个子载波,对应于时域的一个时隙(slot)。每个正交频分复用(OFDM,Orthogonal Frequency Division Multiplexing)/单载波频分复用(SC-FDM,Single Carrier-Frequency Division Multiplexing)符号上对应一个子载波的资源称为资源单元(RE,Resource Element),如图5所示。In this embodiment, FIG. 4 is a schematic structural diagram of a frame structure of an LTE system according to an embodiment of the present invention; and FIG. 5 is a schematic structural diagram of a physical resource block (PRB) of an LTE system according to an embodiment of the present invention. The upstream capital As shown in FIG. 4 and FIG. 5, in the LTE system, radio resources divide resources in units of radio frames in the time domain, each radio frame is 10 ms, and includes 10 subframes. Each sub-frame is 1 ms, divided into 2 slots of 0.5 ms, as shown in FIG. In the frequency domain, resources are divided in units of subcarriers, each of which contains 15 kHz. In the frequency direction, resources are divided into subcarriers. In communication, the smallest unit of frequency domain resource allocation is a resource block (RB, Resource Block), and a physical resource block corresponding to a physical resource (PRB, Physical Resource) Block). A PRB contains 12 subcarriers in the frequency domain, corresponding to one slot in the time domain. A resource corresponding to one subcarrier on each Orthogonal Frequency Division Multiplexing (OFDM) symbol is called a resource unit (RE, Resource Element), as shown in Figure 5.
其中,所述上行调度信息按预设格式发送,基于预设标识加扰。具体的,所述预设格式包括:format0、format4、或format X;其中,所述format X为本发明实施例中的新增格式;所述format X至少包括频域资源指示和时域资源指示;所述频域资源指示包括上行带宽可用资源组序号的bitmap或者发送资源的资源组序号及资源组个数;所述时域资源包括所述频域资源可用的子帧及其后连续上行子帧个数。现有的format0/format4仅可以指示连续或两个不连续的资源,不能很好的利用剩余资源,其频域资源指示字段包括连续资源指示即指示资源的起始位置和资源长度或不连续方式,所述不连续方式即给每个UE分配2个RB组,每个组包含一个或多个连续大小为P的RB,P是RBG中包含的连续RB个数,即RB集合1的起始RBG和结束RBG的索引S0和S1-1及RB集合2的起始RBG和结束RBG的索引S2和S3-1,如果起始索引和结束索引一致,则分配了一个RBG,因此如果按现有的物理资源指示,其分配资源的最小颗粒度为RBG,且仅可以分配两个不连续资源,因此采用一种新的formatX格式为指示方式,其 指示方式1:可以是所有物理资源组(RBG,Resource Block Group)的bitmap方式,即将上行带宽可用的资源按组编序号0~N,每个组包含P个PRB。采用bitmap指示其资源,如bitmap位指示为1则表示其资源分配给低时延业务用户。方式1是每个组可以包含相同个数的PRB,即每个资源组都包含相同的P,如图6(a)假定上行系统带宽的资源块总数为25分配给UE的资源块为PRB 2、PRB 3、PRB 12、PRB 13和PRB 24,当P为两个PRB则formatX资源指示方法为,相应的RBG指示为bimap指示为0100001000001。方式2也可以定义每个资源组包含不同的PRB,如图6(b)其指示方式为集合索引index的bitmap,分配给UE的资源块为PRB 2、PRB3、PRB4,相应bitmap指示为010000。这样可以减少资源指示开销,但需通过广播或预定义方式通知其资源组的类型。进一步说新的formatX可以指示多个不连续子帧资源,现有format0和format4其时域子帧采用固定方式,因此没有时域子帧的开销,如FDD方式UE在子帧n收到PDCCH,在子帧n+4的对应资源上发送PUSCH,而TDD在子帧收到PDCCH在子帧n+k的对应资源上发送PUSCH,k协议根据不同的配置定义。而formatX可用于低时延业务的多个数据包发送或重发,即设计参数L,即如果有参数L则意味着对于FDD,在子帧n接收PDCCH则在n+4及后续L-1个子帧的上行资源都可用于低延迟业务的发送或者重发。The uplink scheduling information is sent in a preset format, and is scrambled based on the preset identifier. Specifically, the preset format includes: format0, format4, or format X. The format X is a new format in the embodiment of the present invention; the format X includes at least a frequency domain resource indication and a time domain resource indication. The frequency domain resource indicates a bitmap including an uplink bandwidth available resource group sequence number or a resource group sequence number of the transmission resource and a number of resource groups; the time domain resource includes a subframe in which the frequency domain resource is available and a subsequent uplink subframe. The number of frames. The existing format0/format4 can only indicate consecutive or two discontinuous resources, and cannot use the remaining resources well. The frequency domain resource indication field includes a continuous resource indication, that is, indicates the starting position of the resource, and the resource length or discontinuous manner. The discontinuous mode is to allocate 2 RB groups to each UE, each group includes one or more RBs of continuous size P, and P is the number of consecutive RBs included in the RBG, that is, the start of the RB set 1. RBG and end RBG indexes S0 and S1-1 and RB set 2 start RBG and end RBG indexes S2 and S3-1, if the start index and the end index match, one RBG is allocated, so if it is existing The physical resource indicates that the minimum granularity of the allocated resource is RBG, and only two discontinuous resources can be allocated, so a new formatX format is used as an indication manner, The indication mode 1: may be the bitmap mode of all the physical resource groups (RBGs), that is, the resources available for the uplink bandwidth are numbered 0 to N according to the group, and each group includes P PRBs. A resource is indicated by a bitmap. If the bit is indicated by a bit, the resource is allocated to the low-latency service user. Mode 1 is that each group can contain the same number of PRBs, that is, each resource group contains the same P, as shown in FIG. 6(a), the total number of resource blocks of the uplink system bandwidth is 25, and the resource block allocated to the UE is PRB 2 The PRB 3, the PRB 12, the PRB 13 and the PRB 24, when P is two PRBs, the formatX resource indication method is, and the corresponding RBG indication is bimap indication 0100001000001. Mode 2 may also define that each resource group contains different PRBs, as shown in FIG. 6(b), the indication manner is a bitmap of the set index index, and the resource blocks allocated to the UE are PRB 2, PRB3, and PRB4, and the corresponding bitmap indicates 010000. This reduces resource indication overhead, but requires notification of the type of its resource group by broadcast or by predefined means. Further, the new formatX may indicate a plurality of non-contiguous subframe resources. The existing format0 and format4 have fixed-time subframes, so there is no overhead of the time domain subframe. For example, the FDD UE receives the PDCCH in the subframe n. The PUSCH is transmitted on the corresponding resource of the subframe n+4, and the TDD transmits the PUSCH on the corresponding resource of the subframe n+k when the subframe receives the PDCCH, and the k protocol is defined according to different configurations. FormatX can be used for multiple data packet transmission or retransmission of low-latency services, that is, design parameter L, that is, if there is a parameter L, it means that for FDD, receiving PDCCH in subframe n is at n+4 and subsequent L-1. The uplink resources of the subframes can be used for the transmission or retransmission of low-latency services.
采用一种新的formatX格式为资源指示方式3,采用RBG的起始索引和RBG数的组合指示方式。例如图6(a)当p=1时PRB=REG,S2:2(索引2:个数2),S12:2(索引12:个数2),S24:1(索引24:个数1)表示上行系统带宽的资源块总数为25分配给UE的资源块为PRB 2、PRB 3、PRB12、PRB 13和PRB 24。A new formatX format is used for the resource indication mode 3, and a combination indication manner of the RBG start index and the RBG number is adopted. For example, FIG. 6(a) when p=1, PRB=REG, S2:2 (index 2: number 2), S12:2 (index 12: number 2), S24:1 (index 24: number 1) The total number of resource blocks indicating the uplink system bandwidth is 25, and the resource blocks allocated to the UE are PRB 2, PRB 3, PRB 12, PRB 13, and PRB 24.
基于现有的LTE网络,所述上行调度信息可通过PDCCH承载,PDCCH携带的信息为下行链路控制信息(DCI,Downlink Control Information),则 所述上行调度信息由DCI格式format 0、format 4,以及用于D2D通信的format5及新增的format X格式发送。其中,所述预设标识为至少一组用于所述低延迟业务的无线网络临时标识。其中,所述无线网络临时标识具体可以为用于所述低时延业务的无线网络临时标识(V-RNTI)。其中,以所述预设标识为V-RNTI为例,则所述V-RNTI可以通过预定义方式预先配置,或者通过广播消息发送给终端,或者在终端与网络侧设备建立V2X链接时通过RRC信令发送,可以理解为,所述发送所述上行调度信息之前,所述方法还包括:通过广播消息发送所述预设标识;或者,通过RRC信令发送所述预设标识;或者,通过预定义方式预先配置所述预设标识。Based on the existing LTE network, the uplink scheduling information may be carried by the PDCCH, and the information carried by the PDCCH is downlink control information (DCI, Downlink Control Information). The uplink scheduling information is sent by DCI format format 0, format 4, and format 5 for D2D communication and a new format X format. The preset identifier is at least one set of wireless network temporary identifiers for the low latency service. The wireless network temporary identifier may specifically be a wireless network temporary identifier (V-RNTI) for the low latency service. The V-RNTI can be pre-configured in a predefined manner, or sent to the terminal through a broadcast message, or through the RRC when the terminal establishes a V2X link with the network side device. The signaling may be configured as follows: before the sending the uplink scheduling information, the method further includes: sending the preset identifier by using a broadcast message; or sending the preset identifier by using RRC signaling; or The preset identifier is pre-configured in a predefined manner.
本实施例中,所述至少一个上行调度信息中包括用于指示所述低时延业务或不同业务的资源位置信息和控制信息。具体的,在发送的上行调度信息为一个时,可通过一个预设标识(例如V-RNTI)对所述上行调度信息进行加扰,用于表征所述低时延业务。当发送的上行调度信息为至少两个时,可通过至少两个预设标识分别对所述至少两个上行调度信息进行加扰,每个上行调度信息分别表征不同的业务。其中,所述至少一个预设标识(例如V-RNTI)可以根据业务等级确定,或者根据业务数据包大小确定,或者由用户群组确定等等。In this embodiment, the at least one uplink scheduling information includes resource location information and control information for indicating the low latency service or different services. Specifically, when the uplink scheduling information that is sent is one, the uplink scheduling information may be scrambled by using a preset identifier (for example, a V-RNTI), and used to represent the low-latency service. When the uplink scheduling information is sent to at least two, the at least two uplink scheduling information may be respectively scrambled by using at least two preset identifiers, and each uplink scheduling information respectively represents different services. The at least one preset identifier (for example, a V-RNTI) may be determined according to a service level, or determined according to a service data packet size, or determined by a user group, and the like.
作为一种实施方式,当需要至少两个预设标识对待发送的上行调度信息进行加扰时,即所述上行调度信息由不同的预设标识加扰时,所述上行调度信息配置为相同或不同的周期发送。As an implementation manner, when at least two preset identifiers are to be used to perform the scrambling of the uplink scheduling information to be sent, that is, when the uplink scheduling information is scrambled by different preset identifiers, the uplink scheduling information is configured to be the same or Send in different cycles.
本实施例中,所述低时延业务具体可以为事件触发型业务,例如V2X事件触发型业务。In this embodiment, the low-latency service may be an event-triggered service, such as a V2X event-triggered service.
采用本发明实施例的技术方案,通过预先配置或者预留的方式为低时延业务(即触发型业务)分配上行资源,在上行有低时延业务的通信需求时可以直接使用,减少了上行资源请求过程,缩短了上行资源的请求时间, 减少了相关上行资源申请与网络侧设备交互的控制信令开销,满足了V2X通信的低时延需求。According to the technical solution of the embodiment of the present invention, an uplink resource is allocated for a low-latency service (that is, a trigger service) in a pre-configured or reserved manner, and can be directly used when the uplink has a low-latency service communication requirement, thereby reducing the uplink. The resource request process shortens the request time of uplink resources. The control signaling overhead of the related uplink resource application and the network side device interaction is reduced, and the low delay requirement of the V2X communication is satisfied.
实施例二 Embodiment 2
本发明实施例还提供了一种资源配置方法。图4为本发明实施例二的资源配置方法的流程示意图;如图4所示,所述方法包括:The embodiment of the invention further provides a resource configuration method. 4 is a schematic flowchart of a resource configuration method according to Embodiment 2 of the present invention; as shown in FIG. 4, the method includes:
步骤301:终端接收到低时延业务的触发指示后,搜索并获得上行调度信息。Step 301: After receiving the trigger indication of the low-latency service, the terminal searches for and obtains uplink scheduling information.
这里,所述搜索并获得上行调度信息,包括:搜索PDCCH的公共搜索空间、或所述终端的特定搜索空间、或所述低延迟业务的专用搜索空间获得上行调度信息。Here, the searching and obtaining the uplink scheduling information includes: searching a common search space of the PDCCH, or a specific search space of the terminal, or a dedicated search space of the low-latency service to obtain uplink scheduling information.
所述低延迟业务的专用搜索空间可以是特定符号上的特定的几个位置。The dedicated search space of the low latency traffic may be a specific number of locations on a particular symbol.
其中,所述获得上行调度信息之前,所述方法还包括:所述终端通过广播消息获得预设标识;或者通过RRC信令获得预设标识;或者获得通过预定义方式预先配置的预设标识;Before the obtaining the uplink scheduling information, the method further includes: the terminal obtaining a preset identifier by using a broadcast message; or obtaining a preset identifier by using RRC signaling; or obtaining a preset identifier pre-configured by a predefined manner;
相应的,所述获得上行调度信息之后,所述方法还包括:基于所述预设标识解扰所述上行调度信息,获得所述低时延业务的上行调度分配信息。其中,所述上行调度分配信息包括资源位置信息和控制信息。Correspondingly, after the obtaining the uplink scheduling information, the method further includes: descrambling the uplink scheduling information according to the preset identifier, and obtaining uplink scheduling allocation information of the low-latency service. The uplink scheduling allocation information includes resource location information and control information.
具体的,所述预设标识为至少一组用于所述低延迟业务的无线网络临时标识。其中,所述无线网络临时标识具体可以为用于所述低时延业务的无线网络临时标识(V-RNTI)。其中,以所述预设标识为V-RNTI为例,则所述V-RNTI可以通过预定义方式预先配置获得,或者通过广播消息获得,或者在终端与网络侧设备建立V2X链接时通过RRC信令获得。所述终端获得V-RNTI后,在接收到低时延业务的触发指示后,搜索PDCCH,在公共搜索空间、或所述终端的特定搜索空间、或所述低延迟业务的专用搜索 空间搜索可用的上行调度信息。获得上行调度信息后,通过V-RNTI进行解码获得上行调度分配信息。Specifically, the preset identifier is at least one set of wireless network temporary identifiers for the low latency service. The wireless network temporary identifier may specifically be a wireless network temporary identifier (V-RNTI) for the low latency service. The V-RNTI can be obtained by pre-configuration in a predefined manner, or obtained by using a broadcast message, or by using an RRC letter when the terminal establishes a V2X link with the network side device. Get it. After obtaining the V-RNTI, the terminal searches for the PDCCH after receiving the trigger indication of the low-latency service, or searches for a specific search space in the common search space, or the terminal, or the dedicated search of the low-delay service. Spatial search for available upstream scheduling information. After obtaining the uplink scheduling information, the V-RNTI performs decoding to obtain uplink scheduling allocation information.
步骤302:基于所述上行调度信息确定上行调度分配信息,按所述上行调度分配信息发送信息。Step 302: Determine uplink scheduling allocation information based on the uplink scheduling information, and send information according to the uplink scheduling allocation information.
这里,所述按所述上行调度分配信息发送信息包括:所述终端按所述上行调度分配信息通过Uu接口或PC5接口发送信息。Here, the sending information according to the uplink scheduling allocation information includes: the terminal sending information according to the uplink scheduling allocation information through a Uu interface or a PC5 interface.
具体的,所述终端按所述上行调度分配信息可通过Uu接口向网络侧设备(例如eNB)发送信息,也可以按所述上行调度分配信息通过PC5接口向其他终端发送信息。Specifically, the terminal may send information to the network side device (for example, an eNB) through the Uu interface according to the uplink scheduling allocation information, or may send information to other terminals through the PC5 interface according to the uplink scheduling allocation information.
采用本发明实施例的技术方案,通过预先配置或者预留的方式为低时延业务(即触发型业务)分配上行资源,在上行有低时延业务的通信需求时可以直接使用,减少了上行资源请求过程,缩短了上行资源的请求时间,减少了相关上行资源申请与网络侧设备交互的控制信令开销,满足了V2X通信的低时延需求。According to the technical solution of the embodiment of the present invention, an uplink resource is allocated for a low-latency service (that is, a trigger service) in a pre-configured or reserved manner, and can be directly used when the uplink has a low-latency service communication requirement, thereby reducing the uplink. The resource request process shortens the request time of the uplink resource, reduces the control signaling overhead of the related uplink resource application and the network side device interaction, and satisfies the low delay requirement of the V2X communication.
下面以网络侧设备为基站(eNB)、以终端为V2X终端为例、结合具体的应用场景对本发明实施例的资源配置方法进行详细说明。The resource configuration method of the embodiment of the present invention is described in detail below with the network side device as the base station (eNB) and the terminal as the V2X terminal as an example.
实施例三 Embodiment 3
本发明实施例还提供了一种资源配置方法。在本实施例中,V2X终端基于基站预配置的上行资源、且基于Uu链路(即Vehicle到eNodeB的链路)进行信息发送。The embodiment of the invention further provides a resource configuration method. In this embodiment, the V2X terminal performs information transmission based on the uplink resources pre-configured by the base station and based on the Uu link (ie, the link of the Vehicle to the eNodeB).
概括的说,首先。基站发送预配置的相关信息,所述预配置的相关信息可通过PDCCH承载,其中PDCCH的采用的格式可以是format0,format4,或新增格式formatX,对于承载特定信息的PDCCH,其采用预定义的V-RNTI加扰,V-RNTI通过广播消息通知覆盖区域范围内的V2X终端;或者可通过基站与V2X终端建立V2X链接时通过RRC信令发送至V2X终端;或者 可通过预定义方式预先配置。则V2X终端接收所述预配置的相关信息。所述预配置的相关信息包括用于V2X终端对上行调度信息进行解扰的V-RNTI,所述V-RNTI的数量可以为至少一组。In a nutshell, first of all. The base station sends the pre-configured related information, where the pre-configured related information may be carried by the PDCCH, where the format of the PDCCH may be format0, format4, or a new format formatX, and the PDCCH carrying the specific information is pre-defined. V-RNTI scrambling, the V-RNTI notifying the V2X terminal in the coverage area by using a broadcast message; or transmitting to the V2X terminal through RRC signaling when the V2X link is established by the base station and the V2X terminal; or It can be pre-configured in a predefined way. Then the V2X terminal receives the pre-configured related information. The pre-configured related information includes a V-RNTI for descrambling the uplink scheduling information by the V2X terminal, and the number of the V-RNTIs may be at least one group.
进一步地,对于V2X终端处于上行同步、需要向基站发送上行信息,但没有上行资源,通过基站预配置的上行调度信息(UL Grant)获得上行资源进行通讯。基站可通过PDCCH承载包含有基站为低时延业务分配的上行资源的上行调度信息;其中,所述上行调度信息可通过PDCCH承载,携带的信息为DCI,用于指示V2X终端可以使用的上行调度分配信息。其中,所述上行调度信息可以位于PDCCH的公共搜索空间、或所述终端的特定搜索空间、或所述低时延业务的专用搜索空间。Further, the V2X terminal is in uplink synchronization, and needs to send uplink information to the base station, but has no uplink resources, and obtains uplink resources for communication through the uplink scheduling information (UL Grant) pre-configured by the base station. The PDCCH may carry the uplink scheduling information of the uplink resource that is allocated by the base station to the low-latency service, where the uplink scheduling information may be carried by the PDCCH, and the carried information is DCI, and is used to indicate the uplink scheduling that the V2X terminal can use. Assign information. The uplink scheduling information may be located in a common search space of the PDCCH, or a specific search space of the terminal, or a dedicated search space of the low latency service.
具体的,所述上行调度信息传输的格式可以为format 0或format 4;其中format0和format4用于指示Uu链路的上行资源配置;所述上行调度信息传输的格式也可以是一种新的传输格式,例如format X,所述format X至少包括频域资源指示和时域资源指示;所述频域资源指示包括上行带宽可用资源组序号的bitmap或者发送资源的资源组序号及资源组个数;所述时域资源包括所述频域资源可用的连续上行子帧个数。所述format X与format0和format4的主要区别在资源分配信息,具体信息描述如下现有的format0/format4仅可以指示连续或两个不连续的资源不能很好的利用剩余资源,采用一种新的formatX格式为指示方式,其指示方式1:可以是所有RBG的bitmap方式,即将上行带宽可用的资源按资源组编序号0~N,每个资源组组包含P个PRB。采用bitmap指示其资源,如bitmap位指示为1则表示其资源分配给低时延业务用户。以上说明的是每个集合包含相同个数的PRB,即每个集合都包含相同的P,如图6(a)假定上行系统带宽的资源块总数为25分配给UE的资源块为PRB 2、PRB 3、PRB 12、PRB 13和PRB 24,当P为两个PRB则相应的bitmap指示为0100001000001。也可以 定义每个序号的资源组包含不同的PRB,如图6(b)其指示方式为集合索引index的bitmap,分配给UE的资源块为PRB 2、PRB 3、PRB4,相应bitmap指示为010000。Specifically, the format of the uplink scheduling information transmission may be format 0 or format 4; where format0 and format4 are used to indicate uplink resource configuration of the Uu link; and the format of the uplink scheduling information transmission may also be a new transmission. a format, such as format X, the format X includes at least a frequency domain resource indication and a time domain resource indication; the frequency domain resource indicates a bitmap including an uplink bandwidth available resource group sequence number or a resource group sequence number and a resource group number of the sending resource; The time domain resource includes the number of consecutive uplink subframes available to the frequency domain resource. The main difference between the format X and the format 0 and the format 4 is in the resource allocation information. The specific information is as follows. The existing format0/format4 can only indicate that the continuous or two discontinuous resources cannot make good use of the remaining resources, and adopt a new type. The format X format is an indication mode, and the indication mode 1: may be the bitmap mode of all RBGs, that is, the resources available for the uplink bandwidth are numbered 0 to N according to the resource group, and each resource group group includes P PRBs. A resource is indicated by a bitmap. If the bit is indicated by a bit, the resource is allocated to the low-latency service user. The above description is that each set contains the same number of PRBs, that is, each set contains the same P, as shown in FIG. 6(a), the total number of resource blocks of the uplink system bandwidth is 25, and the resource block allocated to the UE is PRB 2. PRB 3, PRB 12, PRB 13 and PRB 24, when P is two PRBs, the corresponding bitmap indication is 0100001000001. Also The resource group of each sequence number is defined as a different PRB. As shown in Figure 6 (b), the resource block allocated to the UE is PRB 2, PRB 3, and PRB4, and the corresponding bitmap is 010000.
采用一种新的formatX格式为指示方式,其指示方式2,采用RBG的起始索引和RBG数的组合。例如图6(a)当p=1时PRB=REG,S2:2,S12:2,S24:1表示上行系统带宽的资源块总数为25分配给UE的资源块为PRB 2、PRB 3、PRB 12、PRB 13和PRB 24。A new formatX format is used as the indication mode, which indicates mode 2, which uses a combination of the start index and the RBG number of the RBG. For example, FIG. 6(a) when p=1, PRB=REG, S2:2, S12:2, S24:1 indicates that the total number of resource blocks of the uplink system bandwidth is 25, and the resource blocks allocated to the UE are PRB 2, PRB 3, and PRB. 12. PRB 13 and PRB 24.
进一步说新的FormatX可以指示连续子帧资源,可用于低时延业务的多个数据包发送或重发,即设计参数L,即如果有参数L则意味着对于FDD,在子帧n接收PDCCH则在n+4及后续L个子帧的上行资源用于特殊业务的发送或者重发。Further, the new FormatX can indicate continuous subframe resources, which can be used for multiple data packet transmission or retransmission of low-latency services, that is, the design parameter L, that is, if there is a parameter L, it means that for the FDD, the PDCCH is received in the subframe n. Then, the uplink resources in n+4 and subsequent L subframes are used for transmission or retransmission of special services.
进一步说新的formatX可能还包括调度信息的进一步分配信息,所述调度资源的资源块指示进一步包括分配信息,例如所述指示信息为2bit,则00表示为两个190B的资源块,01表示为190B和300B资源块,10表示为300B资源块和190B资源块,11表示为两个300B的资源块等等。Further, the new formatX may further include further allocation information of the scheduling information, where the resource block indication of the scheduling resource further includes allocation information, for example, the indication information is 2 bits, then 00 is represented as two 190B resource blocks, and 01 is represented as 190B and 300B resource blocks, 10 is represented as a 300B resource block and a 190B resource block, 11 is represented as two 300B resource blocks, and the like.
进一步说新的formatX还包括常规的控制信息,如调制信息(如果采用统一的调制信息或高层信令方式,则没有此字段),功率参数等控制参数。Further, the new formatX also includes conventional control information, such as modulation information (if there is unified modulation information or high-level signaling, there is no such field), power parameters and other control parameters.
具体实施过程包括:The specific implementation process includes:
步骤1:基站通过系统广播消息通知覆盖范围内V2X终端,所述系统广播消息中包含用于盲检的至少一组V-RNTI;Step 1: The base station notifies the V2X terminal in the coverage by using a system broadcast message, where the system broadcast message includes at least one group of V-RNTIs for blind detection;
或者,基站和V2X终端通过预定义方式预先配置至少一组V-RNTI;Or the base station and the V2X terminal pre-configure at least one set of V-RNTIs in a predefined manner;
或者,在基站与V2X终端建立V2X链接时,通过RRC信令通知V2X终端用于盲检PDCCH的至少一组V-RNTI;Or, when the base station establishes a V2X link with the V2X terminal, the V2X terminal is notified by the RRC signaling to blindly detect at least one V-RNTI of the PDCCH;
其中,所述至少一个V-RNTI可以根据业务等级确定或者根据业务数据包大小确定或者由用户群组确定其对应关系,或者随机选择所述至少一个 V-RNTI中的一个V-RNTI,在所选择的V-RNTI被占用后选择剩余的V-RNTI。The at least one V-RNTI may be determined according to a service level or determined according to a service data packet size or determined by a user group, or randomly selected at least one One V-RNTI in the V-RNTI selects the remaining V-RNTI after the selected V-RNTI is occupied.
例如:按业务分组在紧急情况步行者和车辆交互信息采用V-RNTI1;在不可避免的冲突情况下发送告警采用V-RNTI2;通过eNB传递V2I消息采用V-RNTI3。For example, V-RNTI1 is used for emergency pedestrian and vehicle interaction information according to service grouping; V-RNTI2 is used for transmitting alarms in case of unavoidable conflict; V-RNTI3 is adopted for transmitting V2I messages through eNB.
步骤2:V2X终端通过系统广播消息或通过预定义方式预先配置或者通过RRC信令获得至少一组V-RNTI。Step 2: The V2X terminal obtains at least one set of V-RNTIs through system broadcast messages or pre-configured in a predefined manner or through RRC signaling.
步骤3:当V2X终端准备发送上行信息时,盲检PDCCH,在PDCCH的公共搜索空间或所述V2X终端的特定搜索空间、或低时延业务(例如V2X触发型业务)的专用搜索空间采用format0、format4或format X及相应的V-RNTI检索可用的上行调度信息;如果CRC校验成功,则V2X终端知道这个信息是自己所需要的,则进一步解码上行调度信息,获得上行资源。Step 3: When the V2X terminal is ready to send uplink information, the PDCCH is blindly detected, and the specific search space in the common search space of the PDCCH or the V2X terminal or the dedicated search space of the low-latency service (for example, V2X triggered service) adopts format0. The format 4 or the format X and the corresponding V-RNTI retrieve the available uplink scheduling information. If the CRC check succeeds, the V2X terminal knows that the information is required by itself, and further decodes the uplink scheduling information to obtain the uplink resource.
当获得的上行资源大于V2X用户所需资源时,V2X终端可根据指示的上行资源大小,和缓冲(buffer)状态在所指示的资源中按预定义的资源块选择起始资源。例如,低时延业务指定的资源按子帧先时域后频域进一步划分,每个资源为预定义大小或通过V-RNTI获知其大小,V2X终端根据随机选择原则选择其中一个资源作为上行资源进行信息发送。When the obtained uplink resource is larger than the resource required by the V2X user, the V2X terminal may select the starting resource according to the indicated uplink resource size and the buffer state according to the predefined resource block in the indicated resource. For example, the resources specified by the low-latency service are further divided according to the sub-frame time domain and the post-frequency domain. Each resource is a predefined size or is known by the V-RNTI. The V2X terminal selects one of the resources as the uplink resource according to the random selection principle. Send information.
例如,预配置资源块为190RB,可占用一个子帧16PRB,其RNTI采用V-RNTI1,通过PDCCH配置的资源为一个子帧32PRB,则V2X终端可以选择其资源块的频域资源的上半部分进行发送,或选择其资源块的频域资源的下半部分进行发送;For example, the pre-configured resource block is 190 RBs, and one subframe 16 PRB can be occupied. The RNTI adopts V-RNTI1, and the resource configured by the PDCCH is one subframe 32 PRB, and the V2X terminal can select the upper half of the frequency domain resource of the resource block. Sending, or selecting the lower half of the frequency domain resource of its resource block for transmission;
或者,预配置V-RNTI1的资源块承载为190B,V-RNTI的资源块承载为300RB,则V2X终端根据自身缓冲(buffer)状态,选择一种RNTI盲解码获得相应的上行资源; Or, the resource block of the pre-configured V-RNTI1 is 190B, and the resource block of the V-RNTI is 300 RB, and the V2X terminal selects an RNTI blind decoding to obtain the corresponding uplink resource according to the buffer status of the V2.
或者,预配置统一的V-RNTI,其相应配置资源块频域资源的上半部分发送190B,或配置资源块频域资源的下半部分发送300B;Or pre-configuring a unified V-RNTI, the corresponding half of the corresponding resource block frequency domain resource is sent 190B, or the lower half of the resource block frequency domain resource is configured to send 300B;
或者,多个PDCCH指示多个可用的用于低延迟业务的上行资源,每个PDCCH指示一个用于低延迟业务的上行资源;其中,所述多个PDCCH可以使用相同的V-RNTI,也可以使用不同的V-RNTI;不同的V-RNTI可以根据业务等级确定对应关系,或者根据业务数据包大小确定对应关系,或者根据用户群组确定对应关系。Or, the multiple PDCCHs indicate multiple available uplink resources for low-latency services, and each PDCCH indicates one uplink resource for low-latency services; wherein the multiple PDCCHs may use the same V-RNTI, or Different V-RNTIs are used; different V-RNTIs can determine the correspondence according to the service level, or determine the correspondence according to the service packet size, or determine the correspondence according to the user group.
步骤4:V2X终端在选择的上行资源上进行信息发送。Step 4: The V2X terminal sends information on the selected uplink resource.
步骤5:基站在已知的上行资源上检查是否有V2X终端相关的低时延业务,如果存在V2X终端相关的低时延业务,则按配置的资源规则解码相应信息,组包后通过单播、组播或广播方式发送给需要的用户群。Step 5: The base station checks whether there is a V2X terminal-related low-latency service on the known uplink resource. If there is a V2X terminal-related low-latency service, the corresponding information is decoded according to the configured resource rule, and the packet is unicast after the packet is unicast. , multicast or broadcast to the desired user group.
实施例四 Embodiment 4
本发明实施例还提供了一种资源配置方法。在本实施例中,V2X终端基于基站预配置的上行资源、且基于PC5链路(即Vehicle到Vehicle的链路)进行信息发送。The embodiment of the invention further provides a resource configuration method. In this embodiment, the V2X terminal performs information transmission based on the uplink resources pre-configured by the base station and based on the PC5 link (ie, the vehicle-to-vehicle link).
概括的说,首先。基站发送预配置的相关信息,所述预配置的相关信息可通过PDCCH承载,通过广播消息通知覆盖区域范围内的V2X终端;或者可通过基站与V2X终端建立V2X链接时通过RRC信令发送至V2X终端;或者可通过预定义方式预先配置。则V2X终端接收所述预配置的相关信息。所述预配置的相关信息包括用于V2X终端对上行调度信息进行解扰的V-RNTI,所述V-RNTI的数量可以为至少一组。In a nutshell, first of all. The base station sends the pre-configured related information, and the pre-configured related information may be sent by the PDCCH to the V2X terminal in the coverage area by using the broadcast message, or may be sent to the V2X through the RRC signaling when the V2X link is established by the base station and the V2X terminal. Terminal; or pre-configured in a predefined manner. Then the V2X terminal receives the pre-configured related information. The pre-configured related information includes a V-RNTI for descrambling the uplink scheduling information by the V2X terminal, and the number of the V-RNTIs may be at least one group.
进一步地,对于V2X终端处于基站覆盖内、通过接收基站的预配置上行资源在上行基于PC5链路资源上向其他Vehicle用户发送信息,可以用于事件触发型紧急业务,可以不用通过基站申请资源,基站可通过PDCCH承载包含有基站为低时延业务分配的上行资源的上行调度信息;其中,所述 上行调度信息可通过PDCCH承载,携带的信息为DCI,用于指示V2X终端可以使用的上行调度分配信息。Further, the V2X terminal is in the coverage of the base station, and the pre-configured uplink resource of the receiving base station is used to send information to other Vehicle users on the uplink PC5 link resource, which can be used for event-triggered emergency services, and can be applied for resources without using the base station. The base station may carry, by using the PDCCH, uplink scheduling information that includes an uplink resource allocated by the base station for the low-latency service; The uplink scheduling information may be carried by the PDCCH, and the carried information is DCI, and is used to indicate uplink scheduling allocation information that can be used by the V2X terminal.
其中,所述基站发送所述上行调度信息至V2X终端。所述上行调度信息可以位于PDCCH的公共搜索空间、或所述终端的特定搜索空间、或所述低延迟业务的专用搜索空间。The base station sends the uplink scheduling information to a V2X terminal. The uplink scheduling information may be located in a common search space of the PDCCH, or a specific search space of the terminal, or a dedicated search space of the low-latency service.
具体的,用于指示通过PC5传输接口进行通信的格式为format 5,也可以是一种新的传输格式,例如format X。Specifically, the format used to indicate communication through the PC5 transmission interface is format 5, or a new transmission format, such as format X.
具体实施过程包括:The specific implementation process includes:
步骤1:基站通过系统广播消息通知覆盖范围内V2X终端,所述系统广播消息通过系统信息块(SIB)承载,消息中包含用于盲检的至少一组V-RNTI;Step 1: The base station notifies the V2X terminal in the coverage by the system broadcast message, where the system broadcast message is carried by the system information block (SIB), and the message includes at least one group of V-RNTIs for blind detection;
或者,基站和V2X终端通过预定义方式预先配置至少一组V-RNTI;Or the base station and the V2X terminal pre-configure at least one set of V-RNTIs in a predefined manner;
或者,在基站与V2X终端建立V2X链接时,通过RRC信令通知V2X终端用于盲检PDCCH的至少一组V-RNTI;Or, when the base station establishes a V2X link with the V2X terminal, the V2X terminal is notified by the RRC signaling to blindly detect at least one V-RNTI of the PDCCH;
其中,所述至少一个V-RNTI可以根据业务等级确定或者根据业务数据包大小确定或者由用户群组确定其对应关系,或者随机选择所述至少一个V-RNTI中的一个V-RNTI,在所选择的V-RNTI被占用后选择剩余的V-RNTI。The at least one V-RNTI may be determined according to a service level or determined according to a service data packet size or determined by a user group, or randomly selected one V-RNTI in the at least one V-RNTI. After the selected V-RNTI is occupied, the remaining V-RNTIs are selected.
步骤2:V2X终端通过系统广播消息或通过预定义方式预先配置或者通过RRC信令获得至少一组V-RNTI。Step 2: The V2X terminal obtains at least one set of V-RNTIs through system broadcast messages or pre-configured in a predefined manner or through RRC signaling.
步骤3:当V2X终端准备发送上行信息时,检查PDCCH,在PDCCH的公共搜索空间或所述V2X终端的特定搜索空间、或低时延业务(例如V2X触发型业务)的专用搜索空间检索可用的上行调度信息;V2X终端通过V-RNTI解码上行调度信息,获得上行资源。Step 3: When the V2X terminal is ready to send uplink information, check the PDCCH, and search for the dedicated search space in the common search space of the PDCCH or the specific search space of the V2X terminal, or the low-latency service (for example, V2X triggered service). Uplink scheduling information; the V2X terminal decodes the uplink scheduling information by using the V-RNTI to obtain an uplink resource.
其中,所述上行调度信息可以采用现有的format5格式。如果获得的 V-RNTI为公共的V-RNTI,表明对应的上行调度信息中包含的上行资源可以被至少一个V2X终端使用。V2X终端可根据指示的上行资源大小,和缓冲(buffer)状态在所指示的资源中按预定义的资源块选择起始资源;The uplink scheduling information may be in an existing format5 format. If obtained The V-RNTI is a common V-RNTI, indicating that the uplink resource included in the corresponding uplink scheduling information can be used by at least one V2X terminal. The V2X terminal may select the starting resource according to the indicated uplink resource size and the buffer state according to the predefined resource block in the indicated resource;
或者,多个PDCCH指示多个可用的用于低时延业务的上行资源,每个PDCCH指示一个用于低时延业务的上行资源;其中,所述多个PDCCH可以使用相同的V-RNTI,也可以使用不同的V-RNTI;不同的V-RNTI可以根据业务等级确定对应关系,或者根据业务数据包大小确定对应关系,或者根据用户群组确定对应关系。Or, the multiple PDCCHs indicate multiple available uplink resources for low-latency services, and each PDCCH indicates one uplink resource for low-latency services; wherein the multiple PDCCHs may use the same V-RNTI, Different V-RNTIs may also be used; different V-RNTIs may determine correspondences according to service levels, or determine correspondences according to service data packet sizes, or determine correspondences according to user groups.
或者,配置新的格式format X等等。所述新的格式format X具体可参照实施例三中所述,这里不再赘述。Or, configure the new format format X and more. The new format format X can be specifically referred to in the third embodiment, and details are not described herein again.
步骤4:V2X终端在选择的上行资源进行控制信息和业务信息的发送。Step 4: The V2X terminal performs control information and service information transmission on the selected uplink resource.
实施例五 Embodiment 5
本发明实施例还提供了一种资源配置方法。在本实施例中,V2X终端基于基站预配置的上行资源,其中预配置的上行资源和调度方式为V2X终端已知;在上行调度的资源位置,按基站配置的调制编码方式进行发送。The embodiment of the invention further provides a resource configuration method. In this embodiment, the V2X terminal is based on the uplink resource pre-configured by the base station, where the pre-configured uplink resource and the scheduling mode are known to the V2X terminal; and the uplink scheduled resource location is transmitted according to the modulation and coding mode configured by the base station.
具体实施过程包括:The specific implementation process includes:
步骤1:基站通过系统广播消息通知覆盖范围内V2X终端,所述系统广播消息通过系统信息块(SIB)承载,消息中包含上行资源调度信息;Step 1: The base station notifies the V2X terminal in the coverage by using a system broadcast message, where the system broadcast message is carried by a system information block (SIB), and the message includes uplink resource scheduling information.
或者,基站和V2X终端通过小区公共的S-RNTI解扰获得基站配置的用于低时延业务的上行资源调度信息;Alternatively, the base station and the V2X terminal obtain the uplink resource scheduling information configured by the base station for the low-latency service by using the S-RNTI descrambling common to the cell;
步骤2:V2X终端通过系统广播消息或通过预定义方式预先配置或者通过RRC信令获得至少一组V-RNTIStep 2: The V2X terminal obtains at least one set of V-RNTIs through system broadcast messages or through pre-configuration in a predefined manner or through RRC signaling.
步骤3:当V2X准备发送上行信息时,按预定义方式配置的上行资源调度信息进行信息发送;发送的信息通过V-RNTI进行加扰。Step 3: When the V2X is ready to send uplink information, the uplink resource scheduling information configured in a predefined manner is used for information transmission; the transmitted information is scrambled by the V-RNTI.
步骤4:基站在已知的上行资源上检查是否有V2X终端相关的低时延 业务,如果存在V2X终端相关的低时延业务,则按配置的资源规则解码相应信息,组包后通过单播、组播或广播方式发送给需要的用户群。Step 4: The base station checks whether there is a low delay associated with the V2X terminal on the known uplink resource. The service, if there is a low-latency service related to the V2X terminal, decodes the corresponding information according to the configured resource rule, and sends the packet to the required user group through unicast, multicast, or broadcast.
实施例六 Embodiment 6
本发明实施例还提供了一种网络侧设备。图5为本发明实施例的网络侧设备的组成结构示意图;如图5所示,所述网络侧设备包括:分配模块51和发送模块52;其中,The embodiment of the invention further provides a network side device. FIG. 5 is a schematic structural diagram of a network side device according to an embodiment of the present invention; as shown in FIG. 5, the network side device includes: an allocation module 51 and a sending module 52;
所述分配模块51,配置为通过配置或预留方式分配低延迟业务的上行资源;基于分配的上行资源生成上行调度信息;The allocating module 51 is configured to allocate an uplink resource of a low-latency service by using a configuration or a reservation mode, and generate uplink scheduling information based on the allocated uplink resource;
所述发送模块52,配置为发送所述分配模块51生成的上行调度信息。The sending module 52 is configured to send uplink scheduling information generated by the allocating module 51.
本实施例中,所述网络侧设备包括以下设备中的至少之一:演进型基站(eNB)、中继站(RN)、小区协作实体(MCE)、网关(GW)、移动性管理设备(MME)、演进型通用陆地无线接入网(EUTRAN)操作管理及维护(OAM)管理器等等,在本发明各实施例中以eNB作为网络侧设备为例进行说明。In this embodiment, the network side device includes at least one of the following: an evolved base station (eNB), a relay station (RN), a cell coordination entity (MCE), a gateway (GW), and a mobility management device (MME). In the embodiment of the present invention, an eNB is used as a network side device as an example for describing an evolved universal terrestrial radio access network (EUTRAN) operation management and maintenance (OAM) manager.
具体的,所述分配模块51,配置为在分配常规业务的上行资源后,将剩余的上行资源分配给所述低时延业务,基于分配的上行资源生成至少一个上行调度信息;或者,在分配上行资源时,预留部分上行资源分配给所述低时延业务,基于分配的上行资源生成至少一个上行调度信息;或者,预先配置固定上行资源分配给所述低时延业务,基于分配的上行资源生成至少一个上行调度信息。其中,所述固定上行资源生成至少一个上行调度信息通过广播消息发送;或者,通过预定义方式预先配置固定上行资源的上行调度信息。Specifically, the allocating module 51 is configured to: after allocating the uplink resource of the normal service, allocate the remaining uplink resource to the low-latency service, and generate at least one uplink scheduling information based on the allocated uplink resource; or, in the allocation When the uplink resource is allocated, the reserved uplink resource is allocated to the low-latency service, and the at least one uplink scheduling information is generated based on the allocated uplink resource; or the fixed uplink resource is pre-configured to be allocated to the low-latency service, based on the allocated uplink. The resource generates at least one uplink scheduling information. The fixed uplink resource generates at least one uplink scheduling information to be sent by using a broadcast message; or, the uplink scheduling information of the fixed uplink resource is pre-configured in a predefined manner.
本实施例中,所述发送模块52,配置为通过PDCCH发送所述上行调度信息;其中,所述上行调度信息按预设格式发送,基于预设标识加扰。具体的,所述预设格式包括:format0、format4、或format X。其中,所述 format X为本发明实施例中的新增格式;所述format X至少包括频域资源指示和时域资源指示;所述频域资源指示包括上行带宽可用资源组序号的bitmap或者发送资源的资源组序号及资源组个数;所述时域资源包括所述频域资源可用的连续上行子帧个数。现有的format0/format4仅可以指示连续或两个不连续的资源,不能很好的利用剩余资源,其频域资源指示字段包括连续资源指示即指示资源的起始位置和资源长度或不连续方式,所述不连续方式即给每个UE分配2个RB集合,每个集合包含一个或多个连续大小为P的RBG,P是RBG中包含的连续RB个数,即RB集合1的起始RBG和结束RBG的索引S0和S1-1及RB集合2的起始RBG和结束RBG的索引S2和S3-1,如果起始索引和结束索引一致,则分配了一个RBG,因此如果按现有的物理资源指示,其分配资源的最小颗粒度为RBG,且仅可以分配两个不连续资源,因此采用一种新的formatX格式为指示方式,其指示方式1:可以是所有物理资源组(RBG)的bitmap方式,即将上行带宽可用的资源按资源组编序号0~N,每个资源组包含P个PRB。采用bitmap指示其资源,如bitmap位指示为1则表示其资源分配给低时延业务用户。方式1是每个组可以包含相同个数的PRB,即每个集合都包含相同的P,如图6(a)假定上行系统带宽的资源块总数为25分配给UE的资源块为PRB2、PRB 3、PRB 12、PRB 13和PRB 24,当P为两个PRB则formatX资源指示方法为,相应的RBG指示为bitmap指示为0100001000001。方式2也可以定义每个资源组包含不同的PRB,如图6(b)其指示方式为集合索引index的bitmap,分配给UE的资源块为PRB 2、PRB 3、PRB4,相应bitmap指示为010000。这样可以减少资源指示开销,但需通过广播或预定义方式通知其资源组的类型。In this embodiment, the sending module 52 is configured to send the uplink scheduling information by using a PDCCH, where the uplink scheduling information is sent in a preset format, and is scrambled based on the preset identifier. Specifically, the preset format includes: format0, format4, or format X. Wherein said The format X is a new format in the embodiment of the present invention; the format X includes at least a frequency domain resource indication and a time domain resource indication; the frequency domain resource indication includes a bitmap of an uplink bandwidth available resource group sequence number or a resource group of a transmission resource. The sequence number and the number of resource groups; the time domain resource includes the number of consecutive uplink subframes available to the frequency domain resource. The existing format0/format4 can only indicate consecutive or two discontinuous resources, and cannot use the remaining resources well. The frequency domain resource indication field includes a continuous resource indication, that is, indicates the starting position of the resource, and the resource length or discontinuous manner. The discontinuous manner is to allocate 2 RB sets to each UE, each set includes one or more RBGs of continuous size P, and P is the number of consecutive RBs included in the RBG, that is, the start of the RB set 1. RBG and end RBG indexes S0 and S1-1 and RB set 2 start RBG and end RBG indexes S2 and S3-1, if the start index and the end index match, one RBG is allocated, so if it is existing The physical resource indicates that the minimum granularity of the allocated resource is RBG, and only two discontinuous resources can be allocated. Therefore, a new formatX format is used as the indication mode, and the indication mode 1: may be all physical resource groups (RBG). The bitmap method, that is, the resources available for the uplink bandwidth are numbered 0 to N according to the resource group, and each resource group includes P PRBs. A resource is indicated by a bitmap. If the bit is indicated by a bit, the resource is allocated to the low-latency service user. Mode 1 is that each group can contain the same number of PRBs, that is, each set contains the same P. As shown in FIG. 6(a), the total number of resource blocks of the uplink system bandwidth is 25, and the resource blocks allocated to the UE are PRB2 and PRB. 3. The PRB 12, the PRB 13 and the PRB 24, when P is two PRBs, the formatX resource indication method is, and the corresponding RBG indication is a bitmap indication of 0100001000001. Mode 2 may also define that each resource group includes a different PRB, as shown in FIG. 6(b), the indication mode is a bitmap of the set index index, and the resource blocks allocated to the UE are PRB 2, PRB 3, and PRB4, and the corresponding bitmap indication is 010000. . This reduces resource indication overhead, but requires notification of the type of its resource group by broadcast or by predefined means.
进一步说新的formatX可以指示连续子帧资源,现有format0和format4其时域子帧采用固定方式,因此没有时域子帧的开销,如FDD方式UE在 子帧n收到PDCCH,在子帧n+4的对应资源上发送PUSCH,而TDD在子帧收到PDCCH在子帧n+k的对应资源上发送PUSCH,k协议根据不同的配置定义。而formatX可用于低时延业务的多个数据包发送或重发,即设计参数L,即如果有参数L则意味着对于FDD,在子帧n接收PDCCH则在n+4及后续L-1个子帧的上行资源都可用于低延迟业务的发送或者重发。Further, the new formatX can indicate contiguous subframe resources. The existing format0 and format4 have their fixed time mode in the time domain subframe, so there is no overhead of the time domain subframe, such as the FDD mode UE. The sub-frame n receives the PDCCH, and transmits the PUSCH on the corresponding resource of the subframe n+4, and the TDD transmits the PUSCH on the corresponding resource of the subframe n+k when the subframe receives the PDCCH, and the k protocol is defined according to different configurations. FormatX can be used for multiple data packet transmission or retransmission of low-latency services, that is, design parameter L, that is, if there is a parameter L, it means that for FDD, receiving PDCCH in subframe n is at n+4 and subsequent L-1. The uplink resources of the subframes can be used for the transmission or retransmission of low-latency services.
采用一种新的formatX格式为资源指示方式3,采用RBG的起始索引和RBG数的组合指示方式。例如图6(a)当p=1时PRB=REG,S2:2(索引2:个数2),S12:2(索引12:个数2),S24:1(索引24:个数1)表示上行系统带宽的资源块总数为25分配给UE的资源块为PRB 2、PRB 3、PRB 12、PRB 13和PRB 24。A new formatX format is used for the resource indication mode 3, and a combination indication manner of the RBG start index and the RBG number is adopted. For example, FIG. 6(a) when p=1, PRB=REG, S2:2 (index 2: number 2), S12:2 (index 12: number 2), S24:1 (index 24: number 1) The total number of resource blocks indicating the uplink system bandwidth is 25, and the resource blocks allocated to the UE are PRB 2, PRB 3, PRB 12, PRB 13, and PRB 24.
基于现有的LTE网络,所述上行调度信息可通过PDCCH承载,PDCCH携带的信息为的上行DCI,则所述上行调度信息由DCI格式format 0、format4,以及用于D2D通信的format5及新增的format X格式发送。其中,所述预设标识为至少一组用于所述低延迟业务的无线网络临时标识。其中,所述无线网络临时标识具体可以为用于所述低延迟业务的无线网络临时标识(V-RNTI)。其中,以所述预设标识为V-RNTI为例,则所述V-RNTI可以通过预定义方式预先配置,或者通过广播消息发送给终端,或者在终端与网络侧设备建立V2X链接时通过RRC信令发送,可以理解为,所述发送模块52,还配置为发送所述上行调度信息之前,通过广播消息发送所述预设标识;或者,通过RRC信令发送所述预设标识;或者,所述分配模块51,配置为通过预定义方式预先配置所述预设标识。Based on the existing LTE network, the uplink scheduling information may be carried by the PDCCH, and the information carried by the PDCCH is the uplink DCI, and the uplink scheduling information is used by the DCI format format 0, format 4, and the format 5 for the D2D communication. The format X format is sent. The preset identifier is at least one set of wireless network temporary identifiers for the low latency service. The wireless network temporary identifier may specifically be a wireless network temporary identifier (V-RNTI) for the low delay service. The V-RNTI can be pre-configured in a predefined manner, or sent to the terminal through a broadcast message, or through the RRC when the terminal establishes a V2X link with the network side device. The signaling module may be configured to: the sending module 52 is further configured to send the preset identifier by using a broadcast message before sending the uplink scheduling information; or send the preset identifier by using RRC signaling; or The allocating module 51 is configured to pre-configure the preset identifier in a predefined manner.
本实施例中,所述至少一个上行调度信息中包括用于指示所述低时延业务或不同业务的资源位置信息和控制信息。具体的,在发送的上行调度信息为一个时,可通过一个预设标识(例如V-RNTI)对所述上行调度信息进行加扰,用于表征所述低时延业务。当发送的上行调度信息为至少两个 时,可通过至少两个预设标识分别对所述至少两个上行调度信息进行加扰,每个上行调度信息分别表征不同的业务。其中,所述至少一个预设标识(例如V-RNTI)可以根据业务等级确定,或者根据业务数据包大小确定,或者由用户群组确定等等。In this embodiment, the at least one uplink scheduling information includes resource location information and control information for indicating the low latency service or different services. Specifically, when the uplink scheduling information that is sent is one, the uplink scheduling information may be scrambled by using a preset identifier (for example, a V-RNTI), and used to represent the low-latency service. When the uplink scheduling information sent is at least two The at least two uplink scheduling information may be separately scrambled by using at least two preset identifiers, where each uplink scheduling information respectively represents different services. The at least one preset identifier (for example, a V-RNTI) may be determined according to a service level, or determined according to a service data packet size, or determined by a user group, and the like.
作为一种实施方式,当需要至少两个预设标识对待发送的上行调度信息进行加扰时,即所述上行调度信息由不同的预设标识加扰时,所述上行调度信息配置为相同或不同的周期发送。As an implementation manner, when at least two preset identifiers are to be used to perform the scrambling of the uplink scheduling information to be sent, that is, when the uplink scheduling information is scrambled by different preset identifiers, the uplink scheduling information is configured to be the same or Send in different cycles.
本实施例中,所述低时延业务具体可以为事件触发型业务,例如V2X事件触发型业务。In this embodiment, the low-latency service may be an event-triggered service, such as a V2X event-triggered service.
本领域技术人员应当理解,本发明实施例的网络侧设备中各处理单元的功能,可参照前述资源配置方法的相关描述而理解,本发明实施例的网络侧设备中各处理单元,可通过实现本发明实施例所述的功能的模拟电路而实现,也可以通过执行本发明实施例所述的功能的软件在智能终端上的运行而实现。A person skilled in the art should understand that the functions of the processing units in the network side device of the embodiment of the present invention can be understood by referring to the related description of the foregoing resource configuration method. The function of the analog circuit of the embodiment of the present invention can be implemented by using the software of the function described in the embodiment of the present invention on the smart terminal.
本实施例中,所述网络侧设备中的分配模块51,在实际应用中可由所述网络侧设备中的中央处理器(CPU,Central Processing Unit)、数字信号处理器(DSP,Digital Signal Processor)或可编程门阵列(FPGA,Field-Programmable Gate Array)实现;所述网络侧设备中的发送模块52,在实际应用中可由所述网络侧设备中的发射天线或发射机实现。In this embodiment, the allocation module 51 in the network side device may be implemented by a central processing unit (CPU, Central Processing Unit) and a digital signal processor (DSP, Digital Signal Processor) in the network side device. Or a Field-Programmable Gate Array (FPGA) implementation; the transmitting module 52 in the network side device may be implemented by a transmitting antenna or a transmitter in the network side device in an actual application.
实施例七Example 7
本发明实施例还提供了一种终端。图6为本发明实施例的终端的组成结构示意图;如图6所示,所述终端包括:获得单元61、处理单元62和发送单元63;其中,The embodiment of the invention further provides a terminal. FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention; as shown in FIG. 6, the terminal includes: an obtaining unit 61, a processing unit 62, and a sending unit 63;
所述获得单元61,配置为接收到低延迟业务的触发指示后,搜索并获得上行调度信息; The obtaining unit 61 is configured to: after receiving the trigger indication of the low-delay service, search and obtain uplink scheduling information;
所述处理单元62,配置为基于所述获得单元61获得的所述上行调度信息确定上行调度分配信息;The processing unit 62 is configured to determine uplink scheduling allocation information based on the uplink scheduling information obtained by the obtaining unit 61;
所述发送单元63,配置为按所述处理单元62确定的上行调度分配信息发送信息。The sending unit 63 is configured to send information according to the uplink scheduling allocation information determined by the processing unit 62.
本实施例中,所述获得单元61,配置为搜索PDCCH的公共搜索空间、或所述终端的特定搜索空间、或所述低延迟业务的专用搜索空间获得上行调度信息。In this embodiment, the obtaining unit 61 is configured to search for a common search space of the PDCCH, or a specific search space of the terminal, or a dedicated search space of the low-latency service to obtain uplink scheduling information.
其中,所述获得单元61,还配置为获得上行调度信息之前,通过广播消息获得预设标识;或者通过RRC信令获得预设标识;The obtaining unit 61 is further configured to obtain a preset identifier by using a broadcast message before obtaining the uplink scheduling information, or obtain a preset identifier by using RRC signaling;
相应的,所述处理单元62,配置为基于所述获得单元61获得的预设标识解扰所述上行调度信息,获得所述低时延业务的上行资源;或者配置为预先配置的预设标识解扰所述上行调度信息,获得所述低延迟业务的上行调度分配信息。Correspondingly, the processing unit 62 is configured to descramble the uplink scheduling information based on the preset identifier obtained by the obtaining unit 61, to obtain an uplink resource of the low-latency service, or configured as a pre-configured preset identifier. The uplink scheduling information is descrambled to obtain uplink scheduling allocation information of the low-latency service.
具体的,所述预设标识为至少一组用于所述低时延业务的无线网络临时标识。其中,所述无线网络临时标识具体可以为用于所述低延迟业务的无线网络临时标识(V-RNTI)。其中,以所述预设标识为V-RNTI为例,则所述V-RNTI可以通过预定义方式预先配置获得,或者通过广播消息获得,或者在终端与网络侧设备建立V2X链接时通过RRC信令获得。所述终端获得V-RNTI后,在接收到低延迟业务的触发指示后,搜索PDCCH,在公共搜索空间、或所述终端的特定搜索空间、或所述低时延业务的专用搜索空间搜索可用的上行调度信息。获得上行调度信息后,通过V-RNTI进行解码获得上行调度分配信息以进行信息的发送。Specifically, the preset identifier is at least one set of wireless network temporary identifiers for the low latency service. The wireless network temporary identifier may specifically be a wireless network temporary identifier (V-RNTI) for the low delay service. The V-RNTI can be obtained by pre-configuration in a predefined manner, or obtained by using a broadcast message, or by using an RRC letter when the terminal establishes a V2X link with the network side device. Get it. After obtaining the V-RNTI, the terminal searches for the PDCCH after receiving the trigger indication of the low-latency service, and searches for a dedicated search space in the common search space, or the specific search space of the terminal, or the low-latency service. Upstream scheduling information. After obtaining the uplink scheduling information, the V-RNTI performs decoding to obtain uplink scheduling allocation information to perform information transmission.
本实施例中,所述发送单元63,配置为按所述上行调度分配信息通过Uu接口或PC5接口发送信息。In this embodiment, the sending unit 63 is configured to send information through the Uu interface or the PC5 interface according to the uplink scheduling allocation information.
具体的,所述发送单元63按所述上行调度分配信息可通过Uu接口向 网络侧设备(例如eNB)发送信息,也可以按所述上行调度分配信息通过PC5接口向其他终端发送信息。Specifically, the sending unit 63 may allocate information according to the uplink scheduling through a Uu interface. The network side device (for example, an eNB) sends information, and may also send information to other terminals through the PC5 interface according to the uplink scheduling allocation information.
本领域技术人员应当理解,本发明实施例的终端中各处理单元的功能,可参照前述资源配置方法的相关描述而理解,本发明实施例的终端中各处理单元,可通过实现本发明实施例所述的功能的模拟电路而实现,也可以通过执行本发明实施例所述的功能的软件在智能终端上的运行而实现。It should be understood by those skilled in the art that the functions of the processing units in the terminal of the embodiment of the present invention may be understood by referring to the related description of the foregoing resource configuration method, and the processing units in the terminal in the embodiment of the present invention may implement the embodiments of the present invention. The function of the analog circuit is implemented, and can also be implemented by running the software of the function described in the embodiment of the present invention on the smart terminal.
本实施例中,所述终端中的获得单元61和处理单元62,在实际应用中均可由所述终端中的CPU、DSP或FPGA实现;所述终端中的发送单元63,在实际应用中可由所述终端中的发射天线或发射机实现。In this embodiment, the obtaining unit 61 and the processing unit 62 in the terminal may be implemented by a CPU, a DSP or an FPGA in the terminal in an actual application; the sending unit 63 in the terminal may be used in an actual application. The transmit antenna or transmitter in the terminal is implemented.
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个 流程或多个流程和/或方框图一个方框或多个方框中指定的功能。The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The device is implemented in a flow chart A function specified in a block or blocks of a process or multiple processes and/or block diagrams.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
以上所述,仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
工业实用性Industrial applicability
本发明实施例的技术方案通过预先配置或者预留的方式为低时延业务(例如,触发型业务)分配上行资源,在上行有低时延业务的通信需求时可以直接使用,减少了上行资源请求过程,缩短了上行资源的请求时间,减少了相关上行资源申请与网络侧设备交互的控制信令开销,满足了V2X通信的低时延需求。 The technical solution of the embodiment of the present invention allocates uplink resources for low-latency services (for example, triggering services) in a pre-configured or reserved manner, and can be directly used when the uplink has low-latency service communication requirements, thereby reducing uplink resources. The request process shortens the request time of the uplink resource, reduces the control signaling overhead of the related uplink resource application and the network side device interaction, and satisfies the low delay requirement of the V2X communication.

Claims (28)

  1. 一种资源配置方法,所述方法包括:A resource configuration method, the method comprising:
    网络侧设备通过配置或预留方式分配低延迟业务的上行资源;The network side device allocates uplink resources of the low delay service by using a configuration or a reservation manner;
    基于分配的上行资源生成上行调度信息,发送所述上行调度信息。And generating uplink scheduling information based on the allocated uplink resource, and sending the uplink scheduling information.
  2. 根据权利要求1所述的方法,其中,所述网络侧设备通过配置或预留方式分配低延迟业务的上行资源,基于分配的上行资源生成上行调度信息,包括:The method according to claim 1, wherein the network side device allocates the uplink resource of the low-latency service by using the configuration or the reservation mode, and generates the uplink scheduling information based on the allocated uplink resource, including:
    网络侧设备在分配常规业务的上行资源后,将剩余的上行资源分配给所述低延迟业务,基于分配的上行资源生成至少一个上行调度信息;After the network side device allocates the uplink resource of the normal service, the network device allocates the remaining uplink resource to the low-latency service, and generates at least one uplink scheduling information based on the allocated uplink resource.
    或者,网络侧设备在分配上行资源时,预留部分上行资源分配给所述低延迟业务,基于分配的上行资源生成至少一个上行调度信息;Or, when the network side device allocates the uplink resource, the part of the uplink resource is reserved for the low-latency service, and the at least one uplink scheduling information is generated according to the allocated uplink resource;
    或者,网络侧设备预先配置固定上行资源分配给所述低延迟业务,基于分配的上行资源生成至少一个上行调度信息。Alternatively, the network side device pre-configures the fixed uplink resource allocation to the low-latency service, and generates at least one uplink scheduling information based on the allocated uplink resource.
  3. 根据权利要求1所述的方法,其中,所述发送所述上行调度信息,包括:The method of claim 1, wherein the transmitting the uplink scheduling information comprises:
    通过物理下行控制信道PDCCH发送所述上行调度信息;其中,所述上行调度信息按预设格式发送,基于预设标识加扰。And sending, by the physical downlink control channel, the PDCCH, the uplink scheduling information, where the uplink scheduling information is sent in a preset format, and is scrambled based on the preset identifier.
  4. 根据权利要求3所述的方法,其中,所述上行调度信息的预设格式包括:format0、format4或format X;The method according to claim 3, wherein the preset format of the uplink scheduling information comprises: format0, format4 or format X;
    其中,所述format X至少包括频域资源指示和时域资源指示;The format X includes at least a frequency domain resource indication and a time domain resource indication.
    所述频域资源指示包括上行带宽可用资源组序号的位图bitmap或者发送资源的资源组序号及资源组个数;The frequency domain resource indicates a bitmap bitmap including an uplink bandwidth available resource group sequence number, or a resource group sequence number and a resource group number of the sending resource;
    所述时域资源包括所述频域资源可用的连续上行子帧个数。The time domain resource includes the number of consecutive uplink subframes available to the frequency domain resource.
  5. 根据权利要求3所述的方法,其中,所述预设标识为至少一组用于所述低延迟业务的无线网络临时标识。 The method of claim 3, wherein the preset identifier is at least one set of wireless network temporary identifiers for the low latency traffic.
  6. 根据权利要求3所述的方法,其中,所述发送所述上行调度信息之前,所述方法还包括:通过广播消息发送所述预设标识;The method of claim 3, wherein before the sending the uplink scheduling information, the method further comprises: sending the preset identifier by using a broadcast message;
    或者,通过无线资源控制RRC信令发送所述预设标识;Or sending the preset identifier by using radio resource control RRC signaling;
    或者,通过预定义方式预先配置所述预设标识。Alternatively, the preset identifier is pre-configured in a predefined manner.
  7. 根据权利要求2所述的方法,其中,所述至少一个上行调度信息中包括用于指示所述低延迟业务或不同业务的资源位置信息和控制信息。The method according to claim 2, wherein the at least one uplink scheduling information includes resource location information and control information for indicating the low latency traffic or different services.
  8. 根据权利要求5所述的方法,其中,当所述上行调度信息由不同的预设标识加扰时,所述上行调度信息为相同或不同的周期发送。The method according to claim 5, wherein when the uplink scheduling information is scrambled by different preset identifiers, the uplink scheduling information is sent in the same or different period.
  9. 根据权利要求2所述的方法,其中,所述固定上行资源生成至少一个上行调度信息通过广播消息发送;The method according to claim 2, wherein the fixed uplink resource generates at least one uplink scheduling information and is sent by using a broadcast message;
    或者,通过预定义方式预先配置固定上行资源的上行调度信息。Alternatively, the uplink scheduling information of the fixed uplink resource is pre-configured in a predefined manner.
  10. 一种资源配置方法,所述方法包括:终端接收到低延迟业务的触发指示后,搜索并获得上行调度信息;A resource configuration method, the method includes: after receiving a trigger indication of a low-latency service, the terminal searches for and obtains uplink scheduling information;
    基于所述上行调度信息确定上行调度分配信息,按所述上行调度分配信息发送信息。And determining, according to the uplink scheduling information, uplink scheduling allocation information, and transmitting information according to the uplink scheduling allocation information.
  11. 根据权利要求10所述的方法,其中,所述搜索并获得上行调度信息,包括:The method of claim 10, wherein the searching and obtaining uplink scheduling information comprises:
    搜索物理下行控制信道PDCCH的公共搜索空间、或所述终端的特定搜索空间、或所述低延迟业务的专用搜索空间获得上行调度信息。Searching for a common search space of the physical downlink control channel PDCCH, or a specific search space of the terminal, or a dedicated search space of the low-latency service, obtains uplink scheduling information.
  12. 根据权利要求10所述的方法,其中,所述获得上行调度信息之前,所述方法还包括:所述终端通过广播消息获得预设标识;或者通过RRC信令获得预设标识;或者获得通过预定义方式预先配置的预设标识;The method of claim 10, wherein before the obtaining the uplink scheduling information, the method further comprises: the terminal obtaining a preset identifier by using a broadcast message; or obtaining a preset identifier by using RRC signaling; Pre-configured preset identifiers in the defined manner;
    所述获得上行调度信息之后,所述方法还包括:基于所述预设标识解扰所述上行调度信息,获得所述低延迟业务的上行调度分配信息。After the obtaining the uplink scheduling information, the method further includes: descrambling the uplink scheduling information based on the preset identifier, and obtaining uplink scheduling allocation information of the low-latency service.
  13. 根据权利要求10所述的方法,其中,所述按所述上行调度分配信 息发送信息包括:所述终端按所述上行调度分配信息通过Uu接口或PC5接口发送信息。The method of claim 10, wherein said assigning a letter according to said uplink scheduling The information transmission information includes: the terminal sends the information by using the Uu interface or the PC5 interface according to the uplink scheduling allocation information.
  14. 一种网络侧设备,所述网络侧设备包括:分配模块和发送模块;其中,A network side device, where the network side device includes: an allocation module and a sending module;
    所述分配模块,配置为通过配置或预留方式分配低延迟业务的上行资源;基于分配的上行资源生成上行调度信息;The allocation module is configured to allocate an uplink resource of the low-latency service by using a configuration or a reservation mode, and generate uplink scheduling information based on the allocated uplink resource;
    所述发送模块,配置为发送所述分配模块生成的上行调度信息。The sending module is configured to send uplink scheduling information generated by the allocation module.
  15. 根据权利要求14所述的设备,其中,所述分配模块,配置为在分配常规业务的上行资源后,将剩余的上行资源分配给所述低延迟业务,基于分配的上行资源生成至少一个上行调度信息;The device according to claim 14, wherein the allocating module is configured to allocate remaining uplink resources to the low-latency service and allocate at least one uplink scheduling based on the allocated uplink resources after allocating uplink resources of the regular service. information;
    或者,在分配上行资源时,预留部分上行资源分配给所述低延迟业务,基于分配的上行资源生成至少一个上行调度信息;Or, when the uplink resource is allocated, the reserved uplink resource is allocated to the low-latency service, and the at least one uplink scheduling information is generated based on the allocated uplink resource;
    或者,预先配置固定上行资源分配给所述低延迟业务,基于分配的上行资源生成至少一个上行调度信息。Alternatively, the fixed uplink resource is allocated to the low-latency service, and at least one uplink scheduling information is generated based on the allocated uplink resource.
  16. 根据权利要求14所述的设备,其中,所述发送模块,配置为通过PDCCH发送所述上行调度信息;其中,所述上行调度信息按预设格式发送,基于预设标识加扰。The device according to claim 14, wherein the sending module is configured to send the uplink scheduling information by using a PDCCH, where the uplink scheduling information is sent in a preset format, and is scrambled based on a preset identifier.
  17. 根据权利要求16所述的设备,其中,所述预设格式包括:format0、format4或format X;The device according to claim 16, wherein the preset format comprises: format0, format4 or format X;
    其中,所述format X至少包括频域资源指示和时域资源指示;The format X includes at least a frequency domain resource indication and a time domain resource indication.
    所述频域资源指示包括上行带宽可用资源组序号的位图bitmap或者发送资源的资源组序号及资源组个数;The frequency domain resource indicates a bitmap bitmap including an uplink bandwidth available resource group sequence number, or a resource group sequence number and a resource group number of the sending resource;
    所述时域资源包括所述频域资源可用的连续上行子帧个数。The time domain resource includes the number of consecutive uplink subframes available to the frequency domain resource.
  18. 根据权利要求16所述的设备,其中,所述预设标识为至少一组用于所述低延迟业务的无线网络临时标识。 The device of claim 16, wherein the preset identification is at least one set of wireless network temporary identifications for the low latency traffic.
  19. 根据权利要求16所述的设备,其中,所述发送模块,还配置为发送所述上行调度信息之前,通过广播消息发送所述预设标识;或者,通过RRC信令发送所述预设标识;The device according to claim 16, wherein the sending module is further configured to send the preset identifier by using a broadcast message before sending the uplink scheduling information; or sending the preset identifier by using RRC signaling;
    或者,所述分配模块,配置为通过预定义方式预先配置所述预设标识。Alternatively, the allocation module is configured to pre-configure the preset identifier in a predefined manner.
  20. 根据权利要求15所述的设备,其中,所述至少一个上行调度信息中包括用于指示所述低延迟业务或不同业务的资源位置信息和控制信息。The apparatus according to claim 15, wherein the at least one uplink scheduling information includes resource location information and control information for indicating the low latency traffic or different services.
  21. 根据权利要求18所述的设备,其中,当所述上行调度信息由不同的预设标识加扰时,所述上行调度信息为相同或不同的周期发送。The device according to claim 18, wherein when the uplink scheduling information is scrambled by different preset identifiers, the uplink scheduling information is sent in the same or different period.
  22. 根据权利要求15所述的设备,其中,所述固定上行资源生成至少一个上行调度信息通过广播消息发送;The device according to claim 15, wherein the fixed uplink resource generates at least one uplink scheduling information and is sent by using a broadcast message;
    或者,通过预定义方式预先配置固定上行资源的上行调度信息。Alternatively, the uplink scheduling information of the fixed uplink resource is pre-configured in a predefined manner.
  23. 一种终端,所述终端包括:获得单元、处理单元和发送单元;其中,A terminal, the terminal comprising: an obtaining unit, a processing unit, and a sending unit; wherein
    所述获得单元,配置为接收到低时延业务的触发指示后,搜索并获得上行调度信息;The obtaining unit is configured to: after receiving the trigger indication of the low-latency service, search and obtain uplink scheduling information;
    所述处理单元,配置为基于所述获得单元获得的所述上行调度信息确定上行调度分配信息;The processing unit is configured to determine uplink scheduling allocation information based on the uplink scheduling information obtained by the obtaining unit;
    所述发送单元,配置为按所述处理单元确定的上行调度分配信息发送信息。The sending unit is configured to send information according to an uplink scheduling allocation information determined by the processing unit.
  24. 根据权利要求23所述的终端,其中,所述获得单元,配置为搜索PDCCH的公共搜索空间、或所述终端的特定搜索空间、或所述低延迟业务的专用搜索空间获得上行调度信息。The terminal according to claim 23, wherein the obtaining unit is configured to search for a common search space of the PDCCH, or a specific search space of the terminal, or a dedicated search space of the low-latency service to obtain uplink scheduling information.
  25. 根据权利要求23所述的终端,其中,所述获得单元,还配置为获得上行调度信息之前,通过广播消息获得预设标识;或者通过RRC信令获得预设标识; The terminal according to claim 23, wherein the obtaining unit is further configured to obtain a preset identifier by using a broadcast message before obtaining uplink scheduling information, or obtain a preset identifier by using RRC signaling;
    相应的,所述处理单元,配置为基于所述获得单元获得的预设标识解扰所述上行调度信息,获得所述低延迟业务的上行调度分配信息;或者配置为预先配置的预设标识解扰所述上行调度信息,获得所述低时延业务的上行调度分配信息。Correspondingly, the processing unit is configured to descramble the uplink scheduling information based on the preset identifier obtained by the obtaining unit, to obtain uplink scheduling allocation information of the low-latency service, or configured as a pre-configured preset identifier solution. The uplink scheduling information is scrambled to obtain uplink scheduling allocation information of the low-latency service.
  26. 根据权利要求23所述的终端,其中,所述发送单元,配置为按所述上行调度分配信息通过Uu接口或PC5接口发送信息。The terminal according to claim 23, wherein the sending unit is configured to send information through the Uu interface or the PC5 interface according to the uplink scheduling allocation information.
  27. 一种计算机存储介质,所述计算机存储介质中存储有计算机可执行指令,所述计算机可执行指令用于执行权利要求1至9任一项所述的资源配置方法。A computer storage medium having stored therein computer executable instructions for performing the resource configuration method of any one of claims 1 to 9.
  28. 一种计算机存储介质,所述计算机存储介质中存储有计算机可执行指令,所述计算机可执行指令用于执行权利要求10至13任一项所述的资源配置方法。 A computer storage medium having stored therein computer executable instructions for performing the resource configuration method of any one of claims 10 to 13.
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