Multi-point joint transmission method and system for wireless communication enhancement
A multi-point joint, wireless communication technology, applied in radio transmission systems, transmission systems, wireless communication and other directions, can solve the problems of insensitive response to changes, not considering the improvement of edge coverage capabilities, etc., to improve coverage and packet transmission rate. , the effect of improving throughput
Active Publication Date: 2021-05-25
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
[0004] Aiming at the defects and deficiencies of the prior art, such as incapability of dynamic self-adaptive adjustment, insensitive response to changes in the actual environment, or lack of consideration of improving edge coverage capability in the process of multi-point joint transmission, the present invention proposes a wireless communication enhanced multi-point joint The transmission method and system establishes a universal communication protocol according to a variety of different communication situations. While improving the edge coverage capability, the time loss is minimized, and adaptive feedback adjustments are made according to the actual situation to ensure throughput and reliability.
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[0050] Such as figure 1 As shown, it is a wireless communication enhanced multi-point joint transmission system related to this embodiment, including: a cooperative communication module, a cluster head selection module and an adaptive adjustment module, wherein: the cooperative communication module judges the difference between the base station and the terminal Communication scenarios and output corresponding strategies: when there is no communication between the base station and the terminal, the cooperative communication module controls the base station and sets the time window, so that the base station broadcasts every 40ms within the time window to notify each terminal to start the cluster head selection module, and selects the cluster head according to the real-time channel status. Appropriate cluster heads are broadcast and distributed beamforming. If no terminal receives notification information beyond the time window, the terminal will automatically turn on the module; ...
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A multi-point joint transmission method for wireless communication enhancement. When the communication between the base station and the terminal is impossible, the terminal is set to perform an instantaneous grouping strategy and select a node cluster head through environmental awareness and short-distance communication between the terminals; through the node cluster head Broadcast the relevant location information of the base station and other terminals to other terminals in the form of distributed beamforming; finally, each terminal establishes a virtual multiple-input multiple-output system in the form of distributed beamforming according to the received relevant location information to realize the uplink communication with the base station Coverage enhancement, and after the mutual connection with the base station is established, the base station and the terminal exchange real-time channel parameters and control the adaptive adjustment of the virtual MIMO system based on feedback; while improving the edge coverage capability of the present invention, Minimize time loss, and make adaptive feedback adjustments according to actual conditions to ensure throughput and reliability.
Description
technical field [0001] The present invention relates to a technology in the field of wireless communication, in particular to a multi-point joint transmission method and system for wireless communication enhancement. Background technique [0002] At present, many wireless transmission protocols have been used in mobile ad hoc networks. For example, the Internet of Vehicles uses the IEEE 802.11p protocol based on dedicated short-range communication, the collaborative robot network uses the 802.11g protocol based on WiFi, and the wearable sensor network uses the ZigBee-based protocol. IEEE 802.15.4 protocols, these protocols are committed to ensuring high throughput and transmission reliability, that is, low packet loss rate. At the same time, for improving the edge coverage capability, coordinated multi-point transmission was first used in 3GPP as a solution in the LTE-A network. Among them: the joint transmission method and the cooperative transmission method refer to the ch...
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IPC IPC(8): H04B7/026H04B7/0413H04W24/02H04W40/32
CPCH04B7/026H04B7/0413H04W24/02H04W40/32
Inventor 孔令和刘雨桐
Owner SHANGHAI JIAOTONG UNIV