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Communication method and communication device

A communication method and transmission method technology, applied in the field of communication methods and communication devices, can solve the problems of large signaling overhead and delay, reduced communication efficiency, transmission failure, etc., so as to reduce signaling overhead and delay and improve reliability. Effect

Active Publication Date: 2022-07-29
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, when multicast transmission is used to transmit data between network equipment and terminal equipment, transmission failure may occur, resulting in relatively low reliability of data transmission.
In addition, when the network device needs to switch between the multicast transmission mode and the unicast transmission mode, it is necessary to release the configuration of the original transmission mode through RRC signaling, and then establish the configuration of the new transmission mode through RRC signaling, resulting in switching The overhead and delay of signaling in the process are relatively large, which seriously reduces the communication efficiency

Method used

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  • Communication method and communication device
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Embodiment Construction

[0052] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0053] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (Wideband) Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (Long Term Evolution, LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, future fifth generation (5th Generation, 5G) system or new Wireless (New Radio, NR) and so on.

[0054] The terminal device in this embodiment of the present application may refer to a user equipment, an access term...

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Abstract

The present application provides a communication method and communication device, the method includes: a first device establishes a first radio link control RLC entity and a second RLC entity, and the first RLC entity and the second RLC entity associate a first packet data convergence protocol PDCP entity; the first apparatus sends the first data through the first RLC entity and / or the second RLC entity. The first RLC entity corresponds to the unicast transmission mode, and the second RLC entity corresponds to the multicast transmission mode. The communication method provided by the present application associates the RLC entity corresponding to the unicast transmission mode and the RLC entity of the multicast transmission mode by configuring a PDCP. Data is transmitted through the RLC entity in the unicast transmission mode and / or the RLC entity in the multicast transmission mode, and flexible switching can be performed between the unicast transmission mode and the multicast transmission mode, reducing the signaling overhead and delay of the transmission mode switching. , to improve the reliability of data transmission.

Description

technical field [0001] The present application relates to the field of communication, and more specifically, designs a communication method and a communication device. Background technique [0002] Multicast transmission technology refers to a technology in which a network device sends the same data to multiple terminal devices at the same time, that is, point-to-multipoint transmission. When the multicast technology is used for transmission, for the same data, multiple terminal devices receive the same data simultaneously in the process of sending by a network device (eg, a base station). The unicast transmission technology (or called the unicast transmission mode) refers to a technology in which a network device only sends to one terminal device at the same time for the same data, that is, point-to-point transmission. [0003] The network devices and terminal devices that communicate with each other have a certain protocol layer structure. The protocol layer structure ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W36/00
CPCH04W24/02H04W36/0007H04W36/0027H04W4/06H04W80/02H04W8/26H04W76/15H04W76/40H04W76/11H04W76/12
Inventor 许斌李秉肇曹振臻王宏陈磊
Owner HUAWEI TECH CO LTD