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Data transmission method

A data transmission method and data transmission technology, applied in the field of cellular mobile communication, can solve problems such as no solution

Inactive Publication Date: 2014-02-12
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the actual system, when the network deployment scheme is given, there is currently no specific solution to configure the MARC-NC function or the MSMD-NC function on a relay node.

Method used

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Experimental program
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Embodiment Construction

[0028] In order to reasonably use the MARC-NC scheme and the MSMD-NC scheme for data transmission in actual network deployment, the present invention proposes a data transmission strategy when the relay node can configure both the MARC-NC function and the MSMD-NC function.

[0029] In order to give a selection strategy, first compare the characteristics of the MARC-NC scheme and the MSMD-NC scheme under different conditions, as shown in Table 1:

[0030]

[0031] Table 1

[0032] Next, compare the performances of the MARC-NC scheme and the MSMD-NC scheme in detail on the uplink and downlink service flows.

[0033] First, compare the performance of the MARC-NC scheme and the MSMD-NC scheme on the downlink traffic flow.

[0034] from figure 1 From the structure diagram of MARC shown, it can be seen that the MARC-NC scheme is very natural for uplink transmission, but only after a special design, the MARC structure can be used for downlink data transmission. image 3 An exam...

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Abstract

The invention discloses a data transmission method comprising that: a base station notices a relay node to start an uplink MARC-NC function; the base station notices the relay node to start a downlink MSMD-NC function; the base station acquires position information of the relay node, whether relay node is arranged on the boundary of a community is judged, and if relay node is arranged on the boundary of the community, the relay node is noticed to start an uplink MSMD-NC function; and the base station and a user transmits data according the MARC-NC function or the MSMD-NC function configured on the relay node. In the data transmission method, whether the MARC-NC function or the MSMD-NC function is configured on the relay node is confirmed according to the position of the relay node. Therefore, after a corresponding network encoding function is configured on the relay node, the base station and the user can transmit the data according to the network encoding function configured on the relay node so that a higher handling capacity is acquired and performance of the system is enhanced.

Description

technical field [0001] This application relates to cellular mobile communication technology, in particular to a data transmission method in a cellular mobile communication system. Background technique [0002] In the cellular mobile communication system, by introducing a relay node (Relay), the cooperation between the relay node and the sending node is realized, so as to make full use of the space diversity and improve the throughput of the whole system. In the current relay node deployment, one way is to place the relay node inside a macro cell. At this time, a relay node only serves users in one macro cell, and its purpose is to improve the throughput of users in this macro cell. . Another way is to place the relay node at the edge of the macro cell. At this time, one relay node can serve two or three users of the macro cell. The purpose is to reduce the interference of the users at the cell edge. For the convenience of describing the problem, if a relay node has the abi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/08H04L1/00
Inventor 王晓利赵群张永生须田博人
Owner NTT DOCOMO INC