Efficient data transmission method under narrowband communication condition

Abstract

The invention discloses an efficient data transmission method under a narrowband communication condition, and belongs to the field of wireless communication data transmission. The method comprises the following steps: issuing wireless channel resources and user information needed to participate in data transmission services by a base station; after receiving and parsing the information by a terminal, automatically calculating an allocated service channel and a launch window, automatically completing the migration to the service channel and performing window matching on time synchronization information issued by the base station broadcast in real time; and finishing data transmission on the corresponding launch window, and after the data transmission is finished, returning to a control channel by the terminal itself. The whole process of business execution does not need base station intervention, so that the frequent signaling interaction between the base station and the terminal is avoided, the consumption of air interface resources is reduced, and the air interface resources are sufficiently used for the transmission of valid data. Especially in the case of multi-terminal concurrent data transmission application scene, the speed and efficiency of data transmission are improved remarkably.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a base station and terminal equipment based on a TDMA communication system. Background technique [0002] In the field of mobile communication, the air interface (referred to as the air interface) is the wireless transmission specification between the base station and the terminal, which is used to define the frequency, bandwidth, access timing and coding method of each wireless channel. Different communication systems have Different air interface definitions and standards. [0003] In narrowband communication conditions, limited by the bandwidth of the air interface, in some application scenarios, the effect of data transmission services is not very ideal. As the data services around the narrowband communication system become increasingly rich and perfect, users have put forward higher requirements for data transmission services, especially multi-point concurre...

AI Technical Summary

Problems solved by technology

[0006] 1. In the traditional data transmission process, individual users are used as the target to control the transmission of uplink data. During this period, a large amount of air interface signaling interaction is required to complete the process of random access request, access response and channel allocation, which occupies a lot of space. air interface resources, the ratio of the data transmission payload to the air interface resources used decreases, and the wireless channel resources are not fully utilized

[0007] 2. The general data transmission process introduces a random access mechanism. When a large number of terminals need to transmit data at the same time, frequent air interface collisions will occur, resulting in a greatly reduced access success rate and seriously affecting the response of data transmission services. speed

[0008] 3. Using group users as the object of data transmission can solve the bottleneck problem of downlink data transmission from the base station to the terminal, but it is necessary to statically group the terminals in advance, and cannot dynamically designate specific terminals to participate in the data transmission service, which reduces the flexibility of the service and ease of use

Images