CN111294754B - Uplink transmission method and device based on direct link resources and storage medium - Google Patents
Uplink transmission method and device based on direct link resources and storage medium Download PDFInfo
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- CN111294754B CN111294754B CN201910243213.XA CN201910243213A CN111294754B CN 111294754 B CN111294754 B CN 111294754B CN 201910243213 A CN201910243213 A CN 201910243213A CN 111294754 B CN111294754 B CN 111294754B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
An uplink transmission method and device based on direct link resources and a storage medium, wherein the uplink transmission method based on the direct link resources comprises the following steps: receiving pre-configured uplink indication information, wherein the uplink indication information comprises an identifier of a direct link transmission resource which can be used for uplink transmission; and when the direct link transmission resource corresponding to the identifier is not used for transmitting the V2X data, the direct link transmission resource is used for transmitting uplink data. The technical scheme of the invention can improve the spectrum efficiency of data transmission.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an uplink transmission method and apparatus based on direct link resources, and a storage medium.
Background
In the Communication standard protocol version 12 (Release 12), a Long Term Evolution (LTE) system introduces Direct Communication (Direct Communication). A plurality of User Equipments (UEs) can communicate directly with each other through the PC5 interface. The PC5 interface is a direct interface between UEs. In the prior art, there are two modes of resource allocation, one is a scheduled resource allocation (scheduled resource allocation), which is configured by a base station through dedicated signaling; one is an automatic Resource selection (automatic Resource selection), in which a base station may provide a Resource pool for direct communication to a UE through a system message or Radio Resource Control (RRC) signaling, and the UE selects a Resource for direct communication from the Resource pool. If the transmitted UE (Transmitter UE) is not in the network coverage, the UE selects resources for direct communication from a pre-configured resource pool in an automatic resource selection mode.
In the prior art, the third Generation Partnership project (3 rd Generation Partnership project,3 gpp) also supports Vehicle-to-evolution (V2X) based on direct communication. While 3GPP is studying to introduce V2X in New Radio (NR) systems. Because the 5G system can provide larger bandwidth and lower time delay, the service requirement of V2X can be better met. And 3GPP has agreed that NR V2X can transmit V2X traffic in unicast (unicast), multicast (groupcast) or broadcast manner. For one transmitting (Tx) UE, there may be multiple V2X services at the same time, e.g., different V2X services to different UEs. Generally, the Tx UE may predict characteristics of each V2X service, such as a period, a start time, and a size of each data amount. When the Tx UE is in a connected state, the Tx UE may report characteristics of each V2X service to a serving base station (i.e., a base station serving the Tx UE) through Radio Resource Control (RRC) signaling. The serving base station may configure the semi-static direct link transmission resource, so that the Tx UE can transmit the V2X data through the semi-static direct link transmission resource in time when there is the V2X data, which not only reduces Downlink Control Information (DCI) overhead of dynamically scheduling the direct link transmission resource, but also reduces the V2X data transmission delay caused by the scheduling delay.
However, in an actual process, since the generation of V2X data is not completely periodic, semi-static direct link transmission resources preconfigured by the base station for the Tx UE are sometimes wasted; if this happens frequently, the spectral efficiency of the overall system will be significantly reduced.
Disclosure of Invention
The invention solves the technical problem of how to improve the spectrum efficiency of data transmission.
In order to solve the above technical problem, an embodiment of the present invention provides an uplink transmission method based on direct link resources, where the uplink transmission method based on direct link resources includes: receiving pre-configured uplink indication information, wherein the uplink indication information comprises an identifier of a direct link transmission resource which can be used for uplink transmission; and when the direct link transmission resource corresponding to the identifier is not used for transmitting the V2X data, the direct link transmission resource is used for transmitting uplink data.
Optionally, the uplink indication information further includes a modulation and coding strategy, and the transmitting uplink data by using the direct link transmission resource includes: and transmitting the uplink data at the resource position indicated by the identification of the direct link transmission resource according to the modulation coding strategy.
Optionally, the uplink indication information further includes a power compensation factor, where the power compensation factor is less than or equal to 1, and the transmitting uplink data by using the direct link transmission resource includes: determining uplink transmission power according to the power compensation factor, the path loss and the expected received power of the service base station; transmitting the uplink data at a resource location indicated by the identification of the direct link transmission resource using the uplink transmission power.
Optionally, the uplink indication information further includes an uplink advance condition, and the transmitting uplink data by using the direct link transmission resource includes: comparing whether the current uplink lead meets the uplink lead condition; and when the current uplink lead meets the uplink lead condition, transmitting uplink data by using the direct link transmission resource.
Optionally, the uplink indication information further includes a priority threshold, and the transmitting uplink data using the direct link transmission resource includes: determining an uplink logical channel with a priority greater than the priority threshold; and transmitting the uplink data of the uplink logical channel by using the direct link transmission resource.
Optionally, the receiving the preconfigured uplink indication information includes: and receiving RRC signaling from a service base station, wherein the RRC signaling comprises the uplink indication information.
Optionally, the direct link transmission resource is a semi-static direct link transmission resource or a dynamic direct link transmission resource scheduled by the serving base station.
In order to solve the above technical problem, an embodiment of the present invention further discloses an uplink transmission method based on direct link resources, where the uplink transmission method includes: sending pre-configured uplink indication information to user equipment, wherein the uplink indication information comprises an identifier of a direct link transmission resource which can be used for uplink transmission; and detecting the received uplink data at the resource position indicated by the identification of the direct link transmission resource.
Optionally, the sending the preconfigured uplink indication information includes: and sending RRC signaling to the user equipment, wherein the RRC signaling comprises the uplink indication information.
In order to solve the above technical problem, an embodiment of the present invention further discloses an uplink transmission device based on direct link resources, where the uplink transmission device includes: an uplink indication information receiving module, adapted to receive preconfigured uplink indication information, where the uplink indication information includes an identifier of a direct link transmission resource that can be used for uplink transmission; and the uplink transmission module is suitable for transmitting the uplink data by using the direct link transmission resource when the direct link transmission resource corresponding to the identifier is not used for transmitting the V2X data.
In order to solve the above technical problem, an embodiment of the present invention further discloses an uplink transmission device based on direct link resources, where the uplink transmission device includes: an uplink indication information sending module, adapted to send preconfigured uplink indication information to a user equipment, where the uplink indication information includes an identifier of a direct link transmission resource that can be used for uplink transmission; and the uplink data receiving module is suitable for detecting and receiving uplink data at the resource position indicated by the identification of the direct link transmission resource.
The embodiment of the invention also discloses a storage medium, which stores computer instructions, and the computer instructions execute the steps of the direct link resource-based uplink transmission method or the steps of the direct link resource-based uplink transmission method when running.
The embodiment of the invention also discloses user equipment which comprises a memory and a processor, wherein the memory is stored with a computer instruction which can be run on the processor, and the processor executes the steps of the uplink transmission method based on the direct link resource when running the computer instruction.
The embodiment of the invention also discloses a base station, which comprises a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor, and the processor executes the steps of the uplink transmission method based on the direct link resources when running the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the technical scheme of the invention receives the uplink indication information which is configured in advance, wherein the uplink indication information comprises an identifier of a direct link transmission resource which can be used for uplink transmission; and when the direct link transmission resource corresponding to the identifier is not used for transmitting the V2X data, the direct link transmission resource is used for transmitting uplink data. In the technical scheme of the invention, for the direct link transmission resource configured by the base station and used for transmitting the V2X data, the user equipment can determine the direct link transmission resource which can be used for uplink transmission by receiving the uplink indication information; therefore, under the condition that the user equipment does not generate the V2X data and the base station allocates the direct link transmission resource for the V2X data, the user equipment can utilize the direct link transmission resource to transmit uplink data, thereby avoiding the waste of the direct link transmission resource and improving the spectrum efficiency.
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Fig. 1 is a flowchart of an uplink transmission method based on direct link resources according to an embodiment of the present invention;
fig. 2 is a flowchart of another uplink transmission method based on direct link resources according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an uplink transmission apparatus based on direct link resources according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another uplink transmission apparatus based on direct link resources according to an embodiment of the present invention.
Detailed Description
As described in the background art, in an actual process, since generation of V2X data is not completely periodic, a semi-static direct link transmission resource preconfigured by a base station for a Tx UE is sometimes wasted; if this situation occurs frequently, the spectral efficiency of the overall system will be significantly reduced.
In the technical scheme of the invention, for the direct link transmission resource configured by the base station and used for transmitting the V2X data, the user equipment can determine the direct link transmission resource which can be used for uplink transmission by receiving the uplink indication information; therefore, under the condition that the user equipment does not generate V2X data and the base station allocates the direct link transmission resource for the V2X data, the user equipment can transmit uplink data by using the direct link transmission resource, thereby avoiding the waste of the direct link transmission resource and improving the spectrum efficiency.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a flowchart of an uplink transmission method based on direct link resources according to an embodiment of the present invention.
The uplink transmission method may be used for the user equipment side. Specifically, the steps shown in fig. 1 may be executed by the user equipment, for example, the user equipment that transmits the user equipment, that is, the user equipment that transmits the V2X data may execute the steps shown in fig. 1.
As shown in fig. 1, the direct link resource-based uplink transmission method may include the steps of:
step S101: receiving pre-configured uplink indication information, wherein the uplink indication information comprises an identifier of a direct link transmission resource which can be used for uplink transmission;
step S102: transmitting uplink data using the direct link transmission resource when the V2X data is not transmitted using the identified direct link transmission resource.
It should be noted that, the sequence numbers of the steps in this embodiment do not represent a limitation on the execution order of the steps.
The user equipment (including the sending user equipment and the receiving user equipment) in this embodiment is user equipment supporting an NR V2X service. The receiving user equipment refers to user equipment for receiving V2X data. The same ue may be both a sending ue and a receiving ue, for example, two ues perform bidirectional V2X data transmission, and each ue is both a sending ue and a receiving ue.
In a specific embodiment, the direct link transmission resource may be a semi-static direct link transmission resource or a dynamic direct link transmission resource scheduled by the base station. For the transmission user equipment in a connected state, the serving base station may configure, through RRC signaling, semi-static direct link transmission resources for the user equipment, such as information of a period for configuring the semi-static direct link transmission resources, an initial time slot, occupied frequency domain resources, and the like; the serving base station may also schedule the dynamic direct link transmission resource through DCI, where each DCI indicates a direct link transmission resource; the serving base station may also allocate a semi-static direct link transmission resource to the transmitting user equipment by combining RRC signaling and DCI, for example, the RRC signaling configures a period of the semi-static direct link transmission resource, and the DCI indicates a starting time slot of the first direct link transmission resource and an occupied frequency domain resource, and then repeats according to the period.
In this embodiment, before step S101, the Tx UE may obtain Traffic parameters (Traffic Pattern) of different V2X services, such as a Traffic period, a start time, and a size of data amount each time, according to characteristics of each V2X service or according to history information. The Tx UE may indicate service parameters of different V2X services to a serving base station (or simply referred to as a base station, which is a base station maintaining RRC connection with the transmitting user equipment) through RRC signaling, and the serving base station may configure a semi-static direct link transmission resource through RRC signaling, or may configure a period of the semi-static direct link transmission resource through RRC signaling, and then activate the semi-static direct link transmission resource through DCI. The serving base station may determine, according to the load size of the serving base station and service parameters of the V2X service reported by the UE, the number of semi-static direct link transmission resources Configured for the Tx UE, for example, configured SL Grant1 (Configured Sidelink Grant1, that is, index 1 of the direct link transmission resource), parameters corresponding to period 1 of the SL transmission resource, transmission timeslot 1 in the period, resource block position, number 1, and the like; configured SL Grant2 corresponds to parameters such as period 2 of the SL transmission resource, transmission slot 2 in the period, resource block position, number 2, and the like.
It can be understood by those skilled in the art that the specific implementation manner of configuring the semi-static direct link transmission resource with respect to the base station may also be any other implementable manner, and the embodiment of the present invention is not limited thereto.
In a specific implementation of step S101, the ue may receive preconfigured uplink indication information from the serving base station. Specifically, when the serving base station configures the direct link transmission resource for the user equipment, an index of the direct link transmission resource may be configured. In order to improve resource utilization efficiency, the serving base station may pre-configure uplink indication information to indicate an index of a direct link transmission resource that can be used for uplink transmission. That is, the direct link transmission resource pointed to by the index of the direct link transmission resource in the uplink indication information may be used for transmitting both V2X data and uplink data. The serving base station may configure a plurality of direct link transmission resources for the Tx UE, such as the Configured SL Grant1 and the Configured SL Grant2, and the serving base station may additionally add uplink indication information in part or all of the Configured direct link transmission resources to indicate that the transmission resources may be used for uplink data. The serving base station may also configure the uplink indication information independently, and only needs to associate a corresponding direct link transmission resource index in the uplink indication information, for example, when configuring the uplink indication information, a Configured Sidelink Grant1 is associated, that is, it indicates that the semi-static direct link transmission resource may be used for transmitting V2X data, and when the semi-static direct link transmission resource does not transmit V2X data, the transmission resource may be used for uplink transmission.
It should be noted that the preconfigured uplink indication information may also be agreed by a communication standard protocol. At this time, it can be considered that all configured semi-static direct link transmission resources can be used for uplink transmission when V2X data is not transmitted.
Generally, after receiving the semi-static direct link transmission resource, the Tx UE may apply different direct link transmission resources to different V2X services, and fully utilize the semi-static direct link transmission resource configured by the base station on the premise of meeting the service quality requirement of the V2X service.
In the specific implementation of step S102, if the ue does not generate V2X data, that is, the V2X service does not have V2X data to be transmitted or does not use direct link transmission resources scheduled by the base station, the direct link transmission resources may be used to transmit uplink data. In other words, the user equipment may use the direct link transmission resource for uplink transmission of the Uu interface.
In a non-limiting example, the uplink data may include data of direct link Buffer Status Report (SL BSR), uu BSR, and so on; and may also contain data of the Uu interface logical channel configured by the base station.
In a specific application scenario, the serving base station configures a direct link transmission resource Configured SL Grant1 to the UE1, and the UE1 uses the direct link transmission resource Configured SL Grant1 for the V2X service 1. The serving base station sets uplink indication information in the configuration of the direct link transmission resource, and when there is no V2X data to be transmitted in the V2X service 1, the UE1 may send uplink data to the serving base station by using the Configured SL Grant1 of the direct link transmission resource.
In the embodiment of the present invention, for a direct link transmission resource configured by a base station and used for transmitting V2X data, a user equipment may determine a direct link transmission resource capable of being used for uplink transmission by receiving uplink indication information; therefore, under the condition that the user equipment does not generate the V2X data and the base station allocates the direct link transmission resource for the V2X data, the user equipment can utilize the direct link transmission resource to transmit uplink data, thereby avoiding the waste of the direct link transmission resource and improving the spectrum efficiency.
In a non-limiting embodiment of the present invention, the uplink indication information further includes a modulation and coding strategy.
In this embodiment, the base station may also pre-configure a Modulation Coding Scheme (MCS) for the user equipment to use when transmitting uplink data.
Step S102 shown in fig. 1 may include the following steps: and transmitting the uplink data on the direct link transmission resource according to the modulation and coding strategy.
Specifically, the Tx UE may transmit uplink data to the base station on the physical resource block occupied by the direct link transmission resource according to the preconfigured modulation and coding strategy.
Further, the uplink indication information may further include other uplink parameters, such as transmission power. In other words, the base station may also pre-configure other uplink parameters, and include the other uplink parameters in the uplink indication information and send the uplink indication information to the user equipment. Thus, the user equipment can transmit uplink data to the base station according to the parameters such as the pre-configured MCS and the transmission power.
In a non-limiting embodiment of the present invention, the uplink indication information further includes a power compensation factor, and the power compensation factor is less than or equal to 1.
Step S102 shown in fig. 1 may include the following steps: determining uplink transmission power according to the power compensation factor, the path loss and the expected received power of the service base station; and transmitting the uplink data on the direct link transmission resource by using the uplink transmission power.
In this embodiment, considering that the direct link transmission resource used by the Tx UE is adjacent to the direct link transmission resource used by other UEs, when the Tx UE uses a larger transmission power to transmit uplink data, the Tx UE may have a more serious interference to the direct link signals of other UEs, and thus the Tx UE needs to strictly control the transmission power. The serving base station may configure the UE with a smaller power back-off factor, i.e., smaller than the power back-off factor used in normal uplink data transmission, so that the UE can not form large interference when transmitting uplink data to the base station using the direct link transmission resource.
Specifically, the ue may determine an expected received power of the serving base station and a path loss of a transmission path, calculate a product of the power compensation factor and the path loss, and add the product to the expected received power to obtain a result, which is the uplink transmission power of the ue.
Furthermore, the smaller power compensation factor adopted by the ue may result in smaller uplink transmission power, and thus weaker power reaching the base station. In order to ensure that the base station can correctly receive the uplink data, the base station may pre-configure a lower modulation and coding order, so that the uplink data sent by the Tx UE can be successfully decoded under a lower signal-to-noise ratio condition.
In a non-limiting embodiment of the present invention, the uplink indication information further includes an uplink advance amount condition.
Step S102 shown in fig. 1 may include the following steps: comparing whether the current uplink Advance (TA) meets the uplink Advance condition; and when the current uplink lead meets the uplink lead condition, transmitting uplink data by using the direct link transmission resource.
In this embodiment, the base station may pre-configure the uplink advance condition to limit the ue from adopting the resource indicated by the direct link transmission resource. That is, the ue can use the direct link transmission resource to transmit uplink data when the current uplink advance of the ue satisfies the uplink advance condition.
The uplink advance condition may specifically be an uplink advance interval, or may also be an uplink advance threshold.
It is necessary for the base station to detect whether the Tx UE transmits uplink data at a time-frequency location set as a direct link transmission resource applicable to the Uu interface transmission. The Tx UE applies uplink parameters, such as MCS and transmission power, pre-configured by the base station to the uplink transmission, so that the base station can successfully analyze whether there is uplink data of the Tx UE. Because the uplink advance TA adopted by other UEs when transmitting V2X data at the position adjacent to the direct link transmission resource is different from the normal uplink transmission TA, in order to avoid interference to other UEs performing V2X services, the uplink advance condition of the Tx UE needs to be strictly set, and for example, when the Uu TA is lower than the set uplink advance threshold, the direct link transmission resource not transmitting V2X data can be used for uplink transmission of the Uu interface.
In a non-limiting embodiment of the present invention, the uplink indication information further includes a priority threshold.
Step S102 shown in fig. 1 may include the following steps: determining an uplink logical channel with a priority greater than the priority threshold; and transmitting the uplink data of the uplink logical channel by using the direct link transmission resource.
In this embodiment, the base station may pre-configure the priority threshold, so that the logical channel of the Uu interface exceeding the priority threshold may use the direct link transmission resource, thereby avoiding inefficient use of the direct link transmission resource.
It should be noted that, regarding the MCS, the power compensation factor, the uplink advance condition, and the priority threshold, different values may be set according to different practical application scenarios, which is not limited in this embodiment of the present invention.
In one non-limiting embodiment of the present invention, step S101 shown in fig. 1 may include the following steps: and receiving RRC signaling from a base station, wherein the RRC signaling comprises the uplink indication information.
In this embodiment, the base station may bear the uplink indication information in the RRC signaling, and the user equipment may obtain the uplink indication information by receiving the RRC signaling.
In another optional embodiment, when the base station transmits dynamic direct link transmission resources to the Tx UE through the DCI, the base station may carry uplink indication information through the DCI to indicate whether the direct link transmission resources may be used for uplink transmission. The base station may pre-configure parameters such as MCS, transmission power, etc. for uplink transmission to the Tx UE through RRC signaling in advance.
Referring to fig. 2, an embodiment of the present invention further discloses another uplink transmission method based on direct link resources.
The uplink transmission method shown in fig. 2 may be used on the base station side. In particular, the various steps shown in fig. 2 may be performed by the base station.
As shown in fig. 2, the direct link resource based uplink transmission method may include the steps of:
step S201: sending pre-configured uplink indication information to user equipment, wherein the uplink indication information comprises an identifier of a direct link transmission resource which can be used for uplink transmission;
step S202: detecting reception of uplink data at a resource location indicated by the identification of the direct link transmission resource.
In an embodiment of the present invention, step S201 shown in fig. 2 may include: and sending RRC signaling to the user equipment, wherein the RRC signaling comprises the uplink indication information.
In a specific embodiment, the base station may send the direct link transmission resource and the uplink indication information to the user equipment through RRC signaling.
For further detailed implementation of the embodiments of the present invention, please refer to fig. 1 and related embodiments thereof, which are not described herein again.
Referring to fig. 3, an embodiment of the present invention discloses an uplink transmission device 30 based on direct link resources, where the uplink transmission device 30 may include an uplink indication information receiving module 301 and an uplink transmission module 302.
Wherein, the uplink indication information receiving module 301 is adapted to receive preconfigured uplink indication information, where the uplink indication information includes an identifier of a direct link transmission resource that can be used for uplink transmission; the uplink transmission module 302 is adapted to transmit uplink data by using the direct link transmission resource when V2X data is not transmitted by using the direct link transmission resource corresponding to the identifier.
For more details of the working principle and the working mode of the uplink transmission device 30, reference may be made to the relevant descriptions in fig. 1 to fig. 2, which are not described herein again.
Referring to fig. 4, an embodiment of the present invention discloses an uplink transmission device 40 based on direct link resources, where the uplink transmission device 40 may include an uplink indication information sending module 401 and an uplink data receiving module 402.
The uplink indication information sending module 401 is adapted to send preconfigured uplink indication information to the user equipment, where the uplink indication information includes an identifier of a direct link transmission resource that can be used for uplink transmission; the uplink data receiving module 402 is adapted to detect for receiving uplink data at a resource location indicated by the identity of the direct link transmission resource.
For more details of the operation principle and the operation mode of the uplink transmission device 40, reference may be made to the relevant descriptions in fig. 1 to fig. 3, which are not described herein again.
The embodiment of the invention also discloses a storage medium, on which computer instructions are stored, and when the computer instructions are operated, the steps of the method shown in fig. 1 or fig. 2 can be executed. The storage medium may include ROM, RAM, magnetic or optical disks, etc. The storage medium may further include a non-volatile (non-volatile) memory or a non-transient (non-transient) memory, etc.
The embodiment of the invention also discloses user equipment which can comprise a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor. The processor, when executing the computer instructions, may perform the steps of the method shown in fig. 1. The user equipment includes, but is not limited to, a mobile phone, a computer, a tablet computer and the like.
The embodiment of the invention also discloses a base station, and the user equipment can comprise a memory and a processor, wherein the memory stores computer instructions capable of running on the processor. The processor, when executing the computer instructions, may perform the steps of the method shown in fig. 2.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected by one skilled in the art without departing from the spirit and scope of the invention, as defined in the appended claims.
Claims (13)
1. An uplink transmission method based on direct link resources, comprising:
receiving pre-configured uplink indication information, wherein the uplink indication information comprises an identifier of a direct link transmission resource which can be used for uplink transmission;
when the direct link transmission resource corresponding to the identifier is not used for transmitting the V2X data, the direct link transmission resource is used for transmitting uplink data;
the uplink indication information further includes an uplink advance condition, and the transmitting uplink data by using the direct link transmission resource includes:
comparing whether the current uplink lead meets the uplink lead condition or not;
and when the current uplink lead meets the uplink lead condition, transmitting uplink data by using the direct link transmission resource.
2. The direct link resource based uplink transmission method according to claim 1, wherein the uplink indication information further includes a modulation and coding strategy, and the transmitting uplink data using the direct link transmission resource comprises:
and transmitting the uplink data on the direct link transmission resource according to the modulation coding strategy.
3. The direct link resource based uplink transmission method according to claim 1, wherein the uplink indication information further includes a power compensation factor, the power compensation factor is less than or equal to 1, and the transmitting uplink data using the direct link transmission resource comprises:
determining uplink transmission power according to the power compensation factor, the path loss and the expected received power of the service base station;
transmitting the uplink data on the direct link transmission resource using the uplink transmission power.
4. The direct link resource based uplink transmission method according to claim 1, wherein the uplink indication information further includes a priority threshold, and the transmitting uplink data using the direct link transmission resource comprises:
determining an uplink logical channel with priority greater than the priority threshold;
and transmitting the uplink data of the uplink logical channel by using the direct link transmission resource.
5. The direct link resource based uplink transmission method according to claim 1, wherein the receiving the preconfigured uplink indication information comprises:
and receiving RRC signaling from a service base station, wherein the RRC signaling comprises the uplink indication information.
6. The direct link resource based uplink transmission method according to claim 1, wherein the direct link transmission resource is a semi-static direct link transmission resource or a dynamic direct link transmission resource scheduled by a serving base station.
7. An uplink transmission method based on direct link resources, comprising:
sending pre-configured uplink indication information to user equipment, wherein the uplink indication information comprises an identifier of a direct link transmission resource which can be used for uplink transmission;
detecting reception of uplink data at a resource location indicated by the identity of the direct link transmission resource;
the uplink indication information also comprises an uplink lead condition, so that the user equipment compares whether the current uplink lead meets the uplink lead condition or not, and transmits uplink data by using the direct link transmission resource when the current uplink lead meets the uplink lead condition.
8. The direct link resource based uplink transmission method according to claim 7, wherein the sending the preconfigured uplink indication information comprises:
and sending RRC signaling to the user equipment, wherein the RRC signaling comprises the uplink indication information.
9. An uplink transmission apparatus based on direct link resources, comprising:
an uplink indication information receiving module, adapted to receive preconfigured uplink indication information, where the uplink indication information includes an identifier of a direct link transmission resource that can be used for uplink transmission;
an uplink transmission module, adapted to transmit uplink data by using the direct link transmission resource when V2X data is not transmitted by using the direct link transmission resource corresponding to the identifier;
the uplink indication information also comprises an uplink lead condition, and the uplink transmission module compares whether the current uplink lead meets the uplink lead condition; and when the current uplink lead meets the uplink lead condition, transmitting uplink data by using the direct link transmission resource.
10. An uplink transmission apparatus based on direct link resources, comprising:
an uplink indication information sending module, adapted to send preconfigured uplink indication information to a user equipment, where the uplink indication information includes an identifier of a direct link transmission resource that can be used for uplink transmission;
an uplink data receiving module adapted to detect reception of uplink data at a resource location indicated by the identity of the direct link transmission resource;
the uplink indication information also comprises an uplink lead condition, so that the user equipment compares whether the current uplink lead meets the uplink lead condition, and transmits uplink data by using the direct link transmission resource when the current uplink lead meets the uplink lead condition.
11. A storage medium having stored thereon computer instructions which, when executed, perform the steps of the direct link resource based uplink transmission method according to any one of claims 1 to 6, or the steps of the direct link resource based uplink transmission method according to claim 7 or 8.
12. A user equipment comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor executes the computer instructions to perform the steps of the direct link resource based uplink transmission method according to any one of claims 1 to 6.
13. A base station comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor executes the computer instructions to perform the steps of the direct link resource based uplink transmission method of claim 7 or 8.
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