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Communication method and device
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A communication method and technology for indicating information, applied in the field of communication, can solve the problems of affecting the transmission of service data in the system, unable to know the transmission status of SL data, waste of system resources, etc.
Pending Publication Date: 2021-10-19
HUAWEI TECH CO LTD
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Problems solved by technology
[0005] Since the network device determines the transmission status of SL data through the terminal's HARQ feedback, when the network device cannot receive the terminal's HARQ feedback due to various reasons, the network device will not be able to know the transmission status of the SL data
If it is stipulated that the network device schedules retransmission resources for the terminal at this time, it may cause waste of system resources
Or, if it is stipulated that the network device does not schedule retransmission resources for the terminal at this time, it may affect the transmission of service data in the system
Method used
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Embodiment 1
[0232] In Embodiment 1, the first terminal may communicate with the second terminal, and the first terminal may send SL data to the second terminal. That is, the first terminal is a sending terminal, and the second terminal is a receiving terminal.
[0233] Optionally, the second terminal includes one or more terminals.
[0234] Embodiment 1 includes the following scheme 1 to scheme 3, which will be described separately below.
[0235] Option One
[0236] Scheme 1 is suitable for NACK only scenarios, see Figure 5 , Option 1 includes:
[0237] 501. For SL data transmission, or, for SL data, or, for the first HARQ process, or, for the transmission of the first HARQ process, or, for the first HARQ process ID, or, for the first HARQ process ID related transmission, the first terminal does not receive a NACK, and the first terminal obtains retransmission resources.
[0238] Optionally, the retransmission resource is related to SL data transmission, or, SL data, or, the first ...
Embodiment 2
[0390] In the second embodiment, the first terminal may communicate with the second terminal, and the first terminal may send SL data to the second terminal. That is, the first terminal is a sending terminal, and the second terminal is a receiving terminal. Optionally, the second terminal includes one or more terminals.
[0391] Embodiment 2 includes the following scheme 1 and scheme 2, which are respectively described below.
[0392] Option One
[0393] see Figure 9 , Option 1 includes:
[0394] 901. The first terminal determines that the transmission of the second HARQ process ends or the transmission succeeds, or determines that the transmission associated with the second HARQ process ID ends or the transmission succeeds.
[0395]Optionally, the end of the transmission or the success of the transmission of the second HARQ process, or the end of the transmission or the success of the transmission associated with the second HARQ process ID may be understood as: there is ...
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Abstract
The invention provides a communication method and device, and relates to the technical field of communication. In the method, for sidelink data transmission, when a first terminal does not receive NACK, or the first terminal receives all ACKs, or HARQ feedback of a sidelink of the first terminal is closed, and the first terminal obtains retransmission resources associated with the sidelink data, because data transmission of the first terminal is finished or completed, and the first terminal may ignore retransmission resources and / or send ACK to the network device.
Description
technical field [0001] The present application relates to the field of communication technologies, and in particular, to a communication method and apparatus. Background technique [0002] Vehicle to everything (V2X) is the key technology of intelligent transportation system, and is considered to be one of the fields with the most industrial potential and the clearest market demand in the Internet of Things system. The Internet of Vehicles generally refers to providing vehicle information through sensors and in-vehicle terminals mounted on the vehicle to achieve vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-network (V2V) network, V2N) and vehicle-to-pedestrian (V2P) intercommunication communication network. [0003] V2X has the characteristics of wide application space, great industrial potential and strong social benefits. It is very important to promote the innovation and development of the automobile and information communication industries, build...
Claims
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Application Information
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