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Network device and terminal device for wireless multicast

A technology for network equipment and terminal equipment, which is used in error prevention/detection using return channels, digital transmission systems, electrical components, etc., and can solve problems such as incompatibility of 1-bit ACK/NACK information

Active Publication Date: 2020-01-17
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, none of these methods are compatible with the 1-bit ACK / NACK information conveyed in conventional schemes

Method used

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  • Network device and terminal device for wireless multicast
  • Network device and terminal device for wireless multicast
  • Network device and terminal device for wireless multicast

Examples

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Embodiment Construction

[0068] figure 1 The network device 100 described in the embodiment of the present invention is highlighted. The network device 100 is preferably a BS, and is associated with and / or communicates with one or more terminal devices 200, preferably UEs.

[0069] Specifically, the network device 100 is configured to receive a signal including multiple superimposed messages 101 . Each of these messages 101 is sent by one of the terminal devices 200 and has one of the two possible logical values ​​"true" and "false". These possible logical values ​​could also be called "1" and "0" or vice versa, or "ACK" and "NACK", or any other binary encoding.

[0070] Then, the network device 100 is configured to determine a logical conjunction or disjunction of the superimposed message 101 based on the comparison of the received signal with the threshold. That is, the network device 100 can determine whether the logical conjunction or disjunction of the message 101 is "true" or "false" (eg f...

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Abstract

The present invention provides a network device (100), preferably a BS. The network device (100) is configured to receive a signal comprising a plurality of superimposed messages (101), wherein each message (101) is sent by one of a plurality of terminal devices (200) and has one of two possible logical values "true" and "false". The network device (100) is also configured to determine a logical conjunction or disjunction of the superimposed messages (101) based on a comparison of the received signal with a threshold value. Accordingly, the present invention also provides a terminal device (200), preferably a UE. The terminal device (200) is configured to receive a multicast message (201) from a network device (100), and to send at least one message (101) having, of two possible logical values "true" and "false", the logical value "false" to the network device (100), if the terminal device (200) was not able to decode the multicast message (201). Therein, the terminal device (200) is configured to send the message (101) in a predetermined resource block shared with one or more other terminal devices (200).

Description

technical field [0001] The present invention relates to a network device and a terminal device respectively, which are used to realize an efficient feedback response transmission scheme, especially a feedback response transmission scheme for wireless multicast communication. The invention also relates to a corresponding method, and a system comprising one or more terminal devices and a network device. Background technique [0002] In order to achieve reliable multicast communication, the sender of a multicast message must know whether all intended recipients have received and successfully decoded the multicast message. Currently, this is accomplished by sending an acknowledgment (ACK) and / or negative acknowledgment (NACK) from each intended recipient to the original sender respectively. [0003] For example, in LTE, the Physical Hybrid-ARQ Indicator Channel (PHICH) or the Physical Uplink Control Channel / Physical Uplink Shared Channel for uplink (uplink, UL) and downlink (do...

Claims

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Application Information

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IPC IPC(8): H04L1/16H04L1/00
CPCH04L1/1692H04L2001/0093
Inventor 周冁阿列克桑德劳斯·卡洛克劳斯常云燕伊戈尔·贝耶拉科维奇马蒂亚斯·弗雷斯瓦沃米尔·斯坦查克
Owner HUAWEI TECH CO LTD
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