CN111148062B - Resource allocation method, device and network equipment - Google Patents
Resource allocation method, device and network equipment Download PDFInfo
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- CN111148062B CN111148062B CN201811303023.4A CN201811303023A CN111148062B CN 111148062 B CN111148062 B CN 111148062B CN 201811303023 A CN201811303023 A CN 201811303023A CN 111148062 B CN111148062 B CN 111148062B
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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
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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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
- H04L5/0055—Physical resource allocation for ACK/NACK
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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
The invention provides a resource allocation method, a device and network equipment, wherein the method comprises the following steps: allocating feedback resources for the direct links of the first terminal and the second terminal; monitoring positive feedback information or negative feedback information sent by the second terminal and aiming at the first terminal on the feedback resource; under the condition that positive feedback information which is sent by the second terminal and aims at the first terminal is not monitored, or under the condition that negative feedback information which is sent by the second terminal and aims at the first terminal is monitored, retransmission resources are allocated to the first terminal; the embodiment of the invention determines whether to allocate retransmission resources for the sending terminal by detecting the feedback information on the feedback resources of the straight-through link, overcomes the defects of large retransmission delay and large feedback resource overhead, and overcomes the defect of high signaling overhead.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a resource allocation method, an apparatus, and a network device.
Background
Vehicle-to-outside information exchange (V2X) technology can sense the surrounding conditions of a vehicle in real time, share road information and perform early warning in time by means of wireless communication between vehicles, vehicle-to-drive test infrastructures, and vehicles and pedestrians, and has become a research hotspot for solving the problem of road safety in countries in the world at present.
In the existing LTE V2X technology (Rel-14LTE V2X technology), a PC5 interface (also called a direct link, described as Side link in the protocol) for transmitting data between a User Equipment (UE) and the UE can already support transmission of basic traffic based on road security.
With the further development of the car networking technology, some new application scenarios appear, such as: vehicle formation, advanced driving, sensor information sharing, and remote control. Some of these applications require multicast communication between UEs within a group, or unicast communication between two UEs.
In the existing mechanism, when a mode that a base station allocates direct link resources for terminals is adopted, a feedback mechanism is not provided. If the receiving terminal is required to send HARQ feedback to the sending terminal on the direct link according to a feedback retransmission mechanism of the reference Uu interface, the sending terminal sends the feedback to the base station on the Uu interface, and the base station allocates retransmission resources for the two terminals on the direct link according to the HARQ feedback if the feedback is NACK feedback. The method has two obvious disadvantages, one is that the feedback retransmission time delay is very large, and the time delay and reliability requirements of some services cannot be met; secondly, because the feedback resources on the two links are occupied, the feedback resource overhead is very large. If the feedback information is directly sent to the base station through the receiving node, feedback indicating which TB of which source UE the enb is for is needed, and there is also much signaling overhead.
Disclosure of Invention
The embodiment of the invention provides a resource allocation method, network equipment and a device, which are used for solving the problem that a mode that a base station allocates direct link resources among terminals in the existing mechanism has no feedback mechanism.
In order to achieve the above object, an embodiment of the present invention provides a resource allocation method, which is applied to a network device, and the method includes:
allocating feedback resources for the direct links of the first terminal and the second terminal;
monitoring positive feedback information or negative feedback information sent by the second terminal and aiming at the first terminal on the feedback resource;
and allocating retransmission resources to the first terminal under the condition that the positive feedback information which is sent by the second terminal and aims at the first terminal is not monitored, or under the condition that the negative feedback information which is sent by the second terminal and aims at the first terminal is monitored.
Wherein the monitoring, on the feedback resource, positive feedback information or negative feedback information sent by the second terminal and directed to the first terminal includes:
after the first terminal transmits on the transmission resource allocated by the network side device, the feedback information sent by the second terminal and aiming at the first terminal is monitored on the feedback resource.
Wherein the feedback information comprises: at least one of hybrid automatic repeat request, HARQ, feedback information, channel quality indication, CQI, feedback information, and a reference signal.
Wherein the monitoring, on the feedback resource, positive feedback information or negative feedback information sent by the second terminal and directed to the first terminal includes:
acquiring scheduling control information SCI on a physical direct control channel PSCCH;
determining code domain resources for sending positive feedback information or negative feedback information for the first terminal according to the SCI;
and monitoring positive feedback information or negative feedback information aiming at the first terminal according to the feedback resource and the determined code domain resource.
Wherein, in case the SCI contains identification information of the first terminal,
the determining, according to the SCI, a code domain resource that transmits positive feedback information or negative feedback information for the first terminal includes:
determining sequence offset information according to the identification of the first terminal contained in the SCI;
and determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to a source sequence and the sequence offset information.
Wherein, in case the SCI includes identification information and sequence offset information of the second terminal,
the determining, according to the SCI, a code domain resource that transmits positive feedback information or negative feedback information for the first terminal includes:
and determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to the identification information and the sequence offset information of the second terminal, which are contained in the SCI.
The identification of the first terminal is a direct link vehicle virtual radio network temporary identification SL-V-RNTI of the first terminal;
the identity of the second terminal is the SL-V-RNTI of the second terminal.
An embodiment of the present invention further provides a network side device, including: a memory, a processor, and a program stored on the memory and executable on the processor, the processor implementing the steps when executing the program of:
allocating feedback resources for the direct links of the first terminal and the second terminal;
monitoring positive feedback information or negative feedback information sent by the second terminal and aiming at the first terminal on the feedback resource;
and allocating retransmission resources to the first terminal under the condition that the positive feedback information which is sent by the second terminal and aims at the first terminal is not monitored, or under the condition that the negative feedback information which is sent by the second terminal and aims at the first terminal is monitored.
Wherein the processor is further configured to:
after the first terminal transmits on the transmission resource allocated by the network side device, the feedback information sent by the second terminal and aiming at the first terminal is monitored on the feedback resource.
Wherein the feedback information comprises: at least one of hybrid automatic repeat request, HARQ, feedback information, channel quality indication, CQI, feedback information, and a reference signal.
Wherein the processor is further configured to:
acquiring scheduling control information SCI on a physical direct control channel PSCCH;
determining code domain resources for sending positive feedback information or negative feedback information for the first terminal according to the SCI;
and monitoring positive feedback information or negative feedback information aiming at the first terminal according to the feedback resource and the determined code domain resource.
Wherein, in case the SCI contains identification information of the first terminal, the processor is further configured to:
determining sequence offset information according to the identification of the first terminal contained in the SCI;
and determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to a source sequence and the sequence offset information.
Wherein, in case the SCI contains identification information and sequence offset information of the second terminal, the processor is further configured to:
and determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to the identification information and the sequence offset information of the second terminal, which are contained in the SCI.
The identification of the first terminal is a direct link vehicle virtual radio network temporary identification SL-V-RNTI of the first terminal;
the identity of the second terminal is the SL-V-RNTI of the second terminal.
An embodiment of the present invention further provides a resource allocation apparatus, including:
the first allocation module is used for allocating feedback resources for the direct links of the first terminal and the second terminal;
the monitoring module is used for monitoring positive feedback information or negative feedback information which is sent by the second terminal and aims at the first terminal on the feedback resource;
a second allocating module, configured to allocate retransmission resources to the first terminal when positive feedback information, which is sent by the second terminal and is intended for the first terminal, is not monitored, or when negative feedback information, which is sent by the second terminal and is intended for the first terminal, is monitored.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the resource allocation method described above.
The invention has the beneficial effects that:
according to the technical scheme of the embodiment of the invention, whether retransmission resources are allocated to the sending terminal is determined by monitoring the feedback information on the feedback resources of the direct link, and compared with a feedback retransmission mechanism of a Uu port, the defects of long retransmission time delay and high feedback resource overhead are overcome; compared with the method that the receiving node directly sends the feedback information to the base station, the method overcomes the defect of spending much signaling overhead.
Drawings
FIG. 1 is a flow chart illustrating a resource allocation method according to an embodiment of the invention;
FIG. 2 is a block diagram of a network device according to an embodiment of the invention;
FIG. 3 is a block diagram of a resource allocation apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of resource allocation according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a resource allocation method, a device and network equipment, aiming at the problem that a mode that a base station allocates direct link resources among terminals in the existing mechanism has no feedback mechanism.
As shown in fig. 1, an embodiment of the present invention provides a resource allocation method, which is applied to a network device, and the method includes:
In order to reduce the time delay and signaling overhead, the network side equipment has a monitoring function, and can directly monitor the positive feedback information or negative feedback information on the through link, and the complexity can be realized by the network side equipment, so that a large burden can not be brought to the network side equipment. In addition, the method has no time delay problem of forwarding, and simultaneously reduces the signaling overhead on the Uu port.
It should be noted that, when the base station monitors the direct link, the base station does not monitor the physical direct link shared channel PSSCH; only the physical through control channel PSCCH and the feedback channel and/or the reference channel need to be monitored.
It should be noted that, the embodiment of the present invention provides at least three information feedback manners:
the first method is as follows: the second terminal successfully receives the information sent by the first terminal and sends positive feedback information (ACK) to the first terminal; in this way, the second terminal fails to receive the information sent by the first terminal and does not send any feedback to the first terminal.
In this way, if the base station does not monitor the positive feedback information on the feedback resource, the base station allocates a retransmission resource to the first terminal.
The second method comprises the following steps: and the second terminal fails to receive the information sent by the first terminal and sends negative feedback information (NACK) to the first terminal, and in this way, the second terminal succeeds in receiving the information sent by the first terminal and does not send any feedback to the first terminal.
In this way, if the base station monitors negative feedback information on the feedback resource, it allocates retransmission resource for the first terminal.
The third method comprises the following steps: the second terminal successfully receives the information sent by the first terminal and sends positive feedback information (ACK) to the first terminal, and the second terminal fails to receive the information sent by the first terminal and sends negative feedback information (NACK) to the first terminal.
In this way, if the base station does not monitor the positive feedback information on the feedback resource and monitors the negative feedback information on the feedback resource, the base station allocates the retransmission resource to the first terminal.
Bearing the above example, in the above embodiment of the present invention, step 102 includes:
after the first terminal transmits on the transmission resource allocated by the network side device, the feedback information sent by the second terminal and aiming at the first terminal is monitored on the feedback resource.
For example, as shown in fig. 2, the flow of the resource allocation method provided by the present embodiment is as follows:
step 1, allocating a primary transmission resource (PSCCH or PSSCH) and a feedback resource for a direct link;
step 2, the first terminal (namely the sending terminal) transmits on the corresponding resource;
step 3, the second terminal (namely the receiving terminal) can perform corresponding feedback according to the receiving condition;
step 4, detecting feedback aiming at the first terminal on the feedback resource, and when the second terminal does not send ACK feedback or sends NACK feedback, allocating retransmission resource for the sending terminal;
and 5, the sending terminal retransmits on the corresponding retransmission resource and returns to the step 2.
If the retransmission transmission fails, the same process is used to select retransmission resources including retransmission feedback resources as long as the maximum transmission times are not exceeded.
Specifically, as a preferred embodiment, the feedback information includes: at least one of hybrid automatic repeat request, HARQ, feedback information, channel quality indication, CQI, feedback information, and a reference signal. For example, ACK or NACK is fed back through HARQ.
Specifically, in the foregoing embodiment of the present invention, step 102 includes:
acquiring scheduling control information SCI on a physical direct control channel PSCCH;
determining code domain resources for sending positive feedback information or negative feedback information for the first terminal according to the SCI;
and monitoring positive feedback information or negative feedback information aiming at the first terminal according to the feedback resource and the determined code domain resource.
It should be noted that, in general, the feedback resource allocated to the direct link by the network side device is a time-frequency resource; therefore, in the embodiment of the present invention, the network side device may further determine the code domain resource corresponding to the first terminal according to the SCI, so as to more specifically determine the resource location (including the time domain location, the frequency domain location, and the code domain location) of the positive feedback information or the negative feedback information for the first terminal.
Although the feedback resource is allocated by the network side equipment, if the first terminal is only occupied, the corresponding ACK/NACK only needs to be monitored. If multiple terminals multiplex the feedback resource, the network side device needs to acquire corresponding information on the direct link to determine whether the feedback is feedback information for the first terminal. Alternatively, it may be determined whether a plurality of terminals multiplexing the feedback resource are in the same unicast connection or the same group.
As an optional implementation manner, in a case that the SCI includes identification information of a first terminal, the determining, according to the SCI, a code domain resource that transmits positive feedback information or negative feedback information for the first terminal includes:
determining sequence offset information according to the identification of the first terminal contained in the SCI;
and determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to a source sequence and the sequence offset information.
As another alternative, in the case that the SCI includes identification information and sequence offset information of the second terminal,
the determining, according to the SCI, a code domain resource that transmits positive feedback information or negative feedback information for the first terminal includes:
and determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to the identification information and the sequence offset information of the second terminal, which are contained in the SCI.
It should be noted that, for the case that both the positive feedback information and the negative feedback information need to be fed back, the positive feedback information and the negative feedback information may respectively correspond to different code domain resources of the same time-frequency resource for unicast transmission; for multicast transmission, the positive feedback information and the negative feedback information may respectively correspond to different time frequency resources, and are not specifically limited herein.
Preferably, the identifier of the first terminal is a direct link vehicle virtual radio network temporary identifier SL-V-RNTI of the first terminal; the identity of the second terminal is the SL-V-RNTI of the second terminal.
Considering that for unicast and multicast communication nodes, establishing connection description itself needs to consider less things such as privacy disclosure of geographic position; for unicast and multicast services, an ID system completely different from broadcast communication can be used, namely for unicast and multicast services, a terminal can consider using SL-V-RNTI on a direct link, namely using the SL-V-RNTI as a terminal identifier in a physical layer SCI; for the broadcast service, the UE still adopts the previous ID mark on the direct link; here, the SL-V-RNTI may be mapped according to a certain pattern.
Optionally, the resource allocation method further includes:
acquiring auxiliary reporting information for scheduling reference reported by a terminal through a Uu port;
monitoring scheduling control information SCI sent by a terminal on a PC5 direct link;
monitoring feedback information on the feedback resources of the direct link based on the scheduling control information SCI and the allocated feedback resources;
obtaining an auxiliary reference signal allocated to a direct link resource based on the scheduling control information SCI;
and acquiring auxiliary geographical position information distributed to the direct link resources based on the scheduling control information SCI and the geographical position information reported by the terminal.
As another example, one difference between the base station monitoring the direct link and the normal terminal is that the base station has complete information, such as geographical location information, terminal capability information, etc., and if the geographical information can be utilized on the direct link, some gains can be actually obtained.
Specifically, the ID of the interface of the SL PC5 and the ID information of the Uu interface are associated by the air interface resources through the resources allocated by the base station through the processing capability of the base station itself. For example, the base station allocates resources including PSCCH and PSCCH resources, monitors the corresponding resources, and associates UEs after parsing SCI information. The base station can further (1) acquire the information such as the geographical position, the congestion condition and the like reported by the node through the Uu port; for scheduling reference; (2) the base station can further monitor the feedback resources, detect the corresponding sequence and know the feedback condition based on the information of the source ID, the target ID and the like, and can immediately reselect the resources if NACK feedback or no corresponding ACK feedback is carried out; (3) based on the information such as the source ID and the target ID, the base station may monitor information such as the RS or the CQI for reference to the allocation of the direct link resources.
To sum up, the present invention determines whether to allocate retransmission resources to the sending terminal by monitoring the feedback information on the feedback resources of the direct link in the above embodiments, and overcomes the disadvantages of large retransmission delay and large feedback resource overhead compared with the feedback retransmission mechanism of the Uu port; compared with the method that the receiving node directly sends the feedback information to the base station, the method overcomes the defect of spending much signaling overhead.
As shown in fig. 3, an embodiment of the present invention further provides a network device, which is specifically a base station, and includes a memory 310, a processor 300, a bus interface, and a program stored in the memory 310 and executable on the processor 300, where the processor 300 implements the following steps when executing the program:
allocating feedback resources for the direct links of the first terminal and the second terminal;
monitoring positive feedback information or negative feedback information sent by the second terminal and aiming at the first terminal on the feedback resource;
and allocating retransmission resources to the first terminal under the condition that the positive feedback information which is sent by the second terminal and aims at the first terminal is not monitored, or under the condition that the negative feedback information which is sent by the second terminal and aims at the first terminal is monitored.
Optionally, in the foregoing embodiment of the present invention, the processor 300 is further configured to:
after the first terminal transmits on the transmission resource allocated by the network side device, the feedback information sent by the second terminal and aiming at the first terminal is monitored on the feedback resource.
Optionally, in the above embodiment of the present invention, the feedback information includes: at least one of hybrid automatic repeat request, HARQ, feedback information, channel quality indication, CQI, feedback information, and a reference signal.
Optionally, in the foregoing embodiment of the present invention, the processor 300 is further configured to:
acquiring scheduling control information SCI on a physical direct control channel PSCCH;
determining code domain resources for sending positive feedback information or negative feedback information for the first terminal according to the SCI;
and monitoring positive feedback information or negative feedback information aiming at the first terminal according to the feedback resource and the determined code domain resource.
Optionally, in the above embodiment of the present invention, in a case that the SCI includes identification information of the first terminal, the processor 300 is further configured to:
determining sequence offset information according to the identification of the first terminal contained in the SCI;
and determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to a source sequence and the sequence offset information.
Optionally, in the above embodiment of the present invention, in a case that the SCI includes identification information and sequence offset information of the second terminal, the processor 300 is further configured to:
and determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to the identification information and the sequence offset information of the second terminal, which are contained in the SCI.
Optionally, in the embodiment of the present invention, the identifier of the first terminal is a direct link vehicle virtual radio network temporary identifier SL-V-RNTI of the first terminal; the identity of the second terminal is the SL-V-RNTI of the second terminal.
The network side device may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (evolved Node B, eNB or eNodeB) in LTE, a relay Station or Access point, or a Base Station in a future 5G network, and the like, which is not limited herein.
In summary, the embodiment of the present invention determines whether to allocate retransmission resources to a sending terminal by monitoring feedback information on feedback resources of a direct link, and overcomes the disadvantages of large retransmission delay and large feedback resource overhead compared with a feedback retransmission mechanism of a Uu port; compared with the method that the receiving node directly sends the feedback information to the base station, the method overcomes the defect of spending much signaling overhead.
It should be noted that the network side device provided in the embodiments of the present invention is a network side device capable of executing the resource allocation method, and all the embodiments of the resource allocation method are applicable to the network side device, and can achieve the same or similar beneficial effects.
As shown in fig. 4, an embodiment of the present invention further provides a resource allocation apparatus, including:
a first allocating module 401, configured to allocate feedback resources for a direct link of a first terminal and a second terminal;
a monitoring module 402, configured to monitor, on the feedback resource, positive feedback information or negative feedback information that is sent by the second terminal and is specific to the first terminal;
a second allocating module 403, configured to allocate retransmission resources to the first terminal when positive feedback information sent by the second terminal and addressed to the first terminal is not monitored, or when negative feedback information sent by the second terminal and addressed to the first terminal is monitored.
Optionally, in the foregoing embodiment of the present invention, the monitoring module includes:
and the first monitoring submodule is used for monitoring feedback information which is sent by the second terminal and aims at the first terminal on the feedback resource after the first terminal transmits on the transmission resource allocated by the network side equipment.
Optionally, in the above embodiment of the present invention, the feedback information includes: at least one of hybrid automatic repeat request, HARQ, feedback information, channel quality indication, CQI, feedback information, and a reference signal.
Optionally, in the foregoing embodiment of the present invention, the monitoring module includes:
the acquisition submodule is used for acquiring scheduling control information SCI on a physical direct control channel PSCCH;
the determining submodule is used for determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to the SCI;
and the second monitoring submodule is used for monitoring positive feedback information or negative feedback information aiming at the first terminal according to the feedback resource and the determined code domain resource.
Optionally, in the above embodiment of the present invention, in case that the SCI includes the identification information of the first terminal,
the determination sub-module includes:
a first determining unit, configured to determine sequence offset information according to an identifier of the first terminal included in the SCI;
a second determining unit, configured to determine, according to a source sequence and the sequence offset information, a code domain resource that sends positive feedback information or negative feedback information for the first terminal.
Optionally, in the above embodiment of the present invention, in case that the SCI includes the identification information and the sequence offset information of the second terminal,
the determination sub-module includes:
and a third determining unit, configured to determine, according to the identification information and the sequence offset information of the second terminal included in the SCI, a code domain resource for sending positive feedback information or negative feedback information for the first terminal.
Optionally, in the embodiment of the present invention, the identifier of the first terminal is a direct link vehicle virtual radio network temporary identifier SL-V-RNTI of the first terminal;
the identity of the second terminal is the SL-V-RNTI of the second terminal.
In summary, the embodiment of the present invention determines whether to allocate retransmission resources to a sending terminal by monitoring feedback information on feedback resources of a direct link, and overcomes the disadvantages of large retransmission delay and large feedback resource overhead compared with a feedback retransmission mechanism of a Uu port; compared with the method that the receiving node directly sends the feedback information to the base station, the method overcomes the defect of spending much signaling overhead.
It should be noted that the resource allocation apparatus provided in the embodiments of the present invention is a resource allocation apparatus capable of executing the resource allocation method, and all the embodiments of the resource allocation method are applicable to the resource allocation apparatus and can achieve the same or similar beneficial effects.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the resource allocation method embodiment described above, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
When executed by the processor, the program can implement all implementation manners in the method embodiment applied to the network device side, and is not described herein again to avoid repetition.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (14)
1. A resource allocation method is applied to a network side device, and the method comprises the following steps:
allocating feedback resources for the direct links of the first terminal and the second terminal;
monitoring positive feedback information or negative feedback information sent by the second terminal and aiming at the first terminal on the feedback resource;
under the condition that positive feedback information which is sent by the second terminal and aims at the first terminal is not monitored, or under the condition that negative feedback information which is sent by the second terminal and aims at the first terminal is monitored, retransmission resources are allocated to the first terminal;
wherein the monitoring, on the feedback resource, positive feedback information or negative feedback information sent by the second terminal and directed to the first terminal includes:
acquiring scheduling control information SCI on a physical direct control channel PSCCH;
determining code domain resources for sending positive feedback information or negative feedback information for the first terminal according to the SCI;
and monitoring positive feedback information or negative feedback information aiming at the first terminal according to the feedback resource and the determined code domain resource.
2. The method of claim 1, wherein the monitoring, on the feedback resource, for positive feedback information or negative feedback information sent by the second terminal for the first terminal comprises:
after the first terminal transmits on the transmission resource allocated by the network side device, the feedback information sent by the second terminal and aiming at the first terminal is monitored on the feedback resource.
3. The method of claim 1, wherein the feedback information comprises: at least one of hybrid automatic repeat request, HARQ, feedback information, channel quality indication, CQI, feedback information, and a reference signal.
4. The method of claim 1 wherein in the case where the SCI contains identification information of the first terminal,
the determining, according to the SCI, a code domain resource that transmits positive feedback information or negative feedback information for the first terminal includes:
determining sequence offset information according to the identification of the first terminal contained in the SCI;
and determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to a source sequence and the sequence offset information.
5. The method of claim 1 wherein in the case that the SCI includes identification information and sequence offset information of the second terminal,
the determining, according to the SCI, a code domain resource that transmits positive feedback information or negative feedback information for the first terminal includes:
and determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to the identification information and the sequence offset information of the second terminal, which are contained in the SCI.
6. The method according to claim 4 or 5,
the identification of the first terminal is a direct link vehicle virtual radio network temporary identification SL-V-RNTI of the first terminal;
the identity of the second terminal is the SL-V-RNTI of the second terminal.
7. A network-side device, comprising: a memory, a processor, and a program stored on the memory and executable on the processor, wherein the processor implements the following steps when executing the program:
allocating feedback resources for the direct links of the first terminal and the second terminal;
monitoring positive feedback information or negative feedback information sent by the second terminal and aiming at the first terminal on the feedback resource;
under the condition that positive feedback information which is sent by the second terminal and aims at the first terminal is not monitored, or under the condition that negative feedback information which is sent by the second terminal and aims at the first terminal is monitored, retransmission resources are allocated to the first terminal;
wherein the processor is further configured to:
acquiring scheduling control information SCI on a physical direct control channel PSCCH;
determining code domain resources for sending positive feedback information or negative feedback information for the first terminal according to the SCI;
and monitoring positive feedback information or negative feedback information aiming at the first terminal according to the feedback resource and the determined code domain resource.
8. The network-side device of claim 7, wherein the processor is further configured to:
after the first terminal transmits on the transmission resource allocated by the network side device, the feedback information sent by the second terminal and aiming at the first terminal is monitored on the feedback resource.
9. The network-side device of claim 7, wherein the feedback information comprises: at least one of hybrid automatic repeat request, HARQ, feedback information, channel quality indication, CQI, feedback information, and a reference signal.
10. The network-side device of claim 7, wherein if the SCI includes identification information of the first terminal, the processor is further configured to:
determining sequence offset information according to the identification of the first terminal contained in the SCI;
and determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to a source sequence and the sequence offset information.
11. The network-side device of claim 7, wherein in case that the SCI includes identification information and sequence offset information of the second terminal, the processor is further configured to:
and determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to the identification information and the sequence offset information of the second terminal, which are contained in the SCI.
12. The network-side device of claim 10 or 11,
the identification of the first terminal is a direct link vehicle virtual radio network temporary identification SL-V-RNTI of the first terminal;
the identity of the second terminal is the SL-V-RNTI of the second terminal.
13. A resource allocation apparatus, comprising:
the first allocation module is used for allocating feedback resources for the direct links of the first terminal and the second terminal;
the monitoring module is used for monitoring positive feedback information or negative feedback information which is sent by the second terminal and aims at the first terminal on the feedback resource;
a second allocating module, configured to allocate retransmission resources to the first terminal when positive feedback information, which is sent by the second terminal and is intended for the first terminal, is not monitored, or when negative feedback information, which is sent by the second terminal and is intended for the first terminal, is monitored;
wherein, the monitoring module comprises:
the acquisition submodule is used for acquiring scheduling control information SCI on a physical direct control channel PSCCH;
the determining submodule is used for determining code domain resources for sending positive feedback information or negative feedback information aiming at the first terminal according to the SCI;
and the second monitoring submodule is used for monitoring positive feedback information or negative feedback information aiming at the first terminal according to the feedback resource and the determined code domain resource.
14. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the resource allocation method according to any one of claims 1 to 6.
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