Data transmitting method and device

A data transmission method and a data transmission technology, which are applied in the field of data transmission methods and devices, and can solve problems such as high consumption of low-power terminals

Active Publication Date: 2017-11-14
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a data transmission method and device to sol

Method used

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  • Data transmitting method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] Figure 7 It is a schematic diagram of downlink unicast data transmission, as shown in the figure, in the process of downlink unicast data transmission, it can be as follows:

[0130] 1. Before sending downlink user plane data, if the relay mobile terminal is required to provide a relay service for the low power consumption terminal to provide feedback information, the access network pre-configures the relay association ID for the low power consumption terminal and the relay mobile terminal . After the relay mobile terminal is configured with the relay association ID and the uplink feedback transmission resource is configured, it tries to receive the uplink feedback according to the uplink feedback transmission resource.

[0131] 2. The base station sends the unicast transmission data packet for the low-power terminal to the low-power terminal through the downlink cellular link. The base station can simultaneously send multiple data packets of the same session (for ex...

Embodiment 2

[0137] Figure 8 It is a schematic diagram of downlink unicast multi-channel data transmission, as shown in the figure, in the process of downlink multi-channel unicast data transmission, in order to improve data security, you can choose to pass the data packets of the same session through different downlink relay mobile terminals to retweet. Then it can be implemented as follows:

[0138] 1. Before sending downlink multi-channel user plane data, if multiple relay mobile terminals are required to provide relay services for low-power terminals, the access network needs to configure relays for low-power terminals and relay mobile terminals in advance. Association ID. The relay association ID is configured based on the link between each low-power terminal and the mobile device. During downlink data transmission, the relay mobile terminal can use the configured relay association ID to communicate with the low-power terminal for addressing. After the relay mobile terminal is co...

Embodiment 3

[0144] Figure 9 It is a schematic diagram of uplink unicast data transmission. As shown in the figure, in the process of uplink unicast data transmission, the relay mobile terminal that provides data forwarding services for low-power terminals can communicate with the relay mobile terminal that provides uplink feedback for terminals during downlink data transmission. The forwarding relay mobile terminal is different. That is to say, uplink transmission and downlink transmission can be two completely independent processes. In order to improve data security, the data packets of the same session for the low-power terminal can be sent to the network through different uplink forwarding paths. Then it can be implemented as follows:

[0145] 1. Before sending uplink multi-channel data, if multiple relay mobile terminals are required to provide relay services for low-power terminals, the access network needs to configure relay association IDs for low-power terminals and relay mobil...

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PUM

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Abstract

The invention provides a data transmitting method and a device. The data transmitting method comprises the steps of: receiving, when a base station receives uplink data, the uplink data forwarded by a first low-power-consumption terminal through a first relay mobile terminal; and forwarding, when transmitting downlink data, the downlink data to the first low-power-consumption terminal or a second low-power-consumption terminal, or, forwarding the downlink data to the first low-power-consumption terminal or the second low-power-consumption terminal through the first relay mobile terminal or a second relay mobile terminal. According to the data transmitting method, the relay mobile terminal forwards the uplink and downlink data when receiving the same; the uplink data is forwarded by means of the first relay mobile terminal when the low-power-consumption terminal transmits the uplink data to the base station; and when receiving the downlink data transmitted by the downlink data, the low-power-consumption terminal receives the downlink data transmitted by the base station or forwarded by means of the first relay mobile terminal or the second relay mobile terminal. By adopting the data transmitting method and the device, the cost of the data transmitting method and devices can be significantly reduced, and the user plane anchor point migration caused by the relay mobile terminals at the relay mobile terminals can be avoided.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a data transmission method and device. Background technique [0002] figure 1 It is a schematic diagram of the Cellular MTC solution. As shown in the figure, in the existing Cellular MTC (cellular MTC; MTC: Machine Type Communications, machine type communication) communication solution, low-power terminals directly access the network through the base station, and the base station acts as a low-power The user plane anchor point of the terminal is responsible for forwarding the data received from the low-power terminal through the air interface to the core network, and on the other hand responsible for sending the data received from the core network through the air interface to the low-power terminal. However, because the distance between the base station and the low-power terminal may be very far, the low-power terminal is required to have a very strong uplink tran...

Claims

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Application Information

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IPC IPC(8): H04W4/00
CPCH04W4/70Y02D30/70
Inventor 焦斌
Owner DATANG MOBILE COMM EQUIP CO LTD
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