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Method for sending MBMS data

A sending method and a technology of business data, applied in the directions of broadcast service distribution, transmission path separation device, payload distribution, etc., can solve the problems of unconfigurable, MBMS capacity reduction, and inability to make full use of downlink resources, so as to achieve full utilization and improve The effect of capacity

Active Publication Date: 2014-06-11
CHENGDU TD TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Due to the above-mentioned configuration restrictions on MBSFN subframes, the downlink MBMS capacity will be reduced, and downlink resources cannot be fully utilized. For TD-LTE, the decline is more obvious; for TD-LTE, the MBMS function cannot be used under the condition of configuration 0 (All downlink subframes cannot be configured as MBSFN subframes)

Method used

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  • Method for sending MBMS data
  • Method for sending MBMS data
  • Method for sending MBMS data

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Embodiment Construction

[0034] In order to make the purpose, technical means and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0035] First, analyze the reason why some downlink subframes in the LTE system cannot be configured as MBSFN subframes. The main reasons why MBMS cannot be used in some downlink subframes of the LTE system are as follows:

[0036] 1) Some downlink subframes (subframe 0 / 1 / 5 / 6 in TD-LTE, subframe 0 / 5 in FDD-LTE) contain P-SCH / S-SCH channels, and P-SCH / S - The SCH channel is at the cell level and conflicts with the MBSFN area, so the current protocol stipulates that such downlink subframes cannot be configured as MBSFN subframes.

[0037] 2) Subframe 0 includes P-BCH channel. P-BCH is at the cell level and conflicts with the MBSFN area. Therefore, the current protocol stipulates that subframe 0 cannot be configured as an MBSFN subframe.

[0038] 3) For TDD-LTE, s...

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Abstract

The invention discloses a method for sending MBMS data. The method comprises the steps that a base station configures the same MBSFN subframes to a plurality of cells, and the same MBMS signals are sent to the configured MBSFN subframes, wherein when the MBSFN subframes are configured, subframes where P-SCHs / S-SCHs are located are allowed to be configured into the MBSFN subframes; when the configured MBSFN subframes comprise the subframes where the P-SCHs / S-SCHs are located, the MBMS signals are not sent to RE occupied by the P-SCHs / S-SCHs. By applying the method, the MBMS capacity can be increased, and downlink resources are fully used.

Description

technical field [0001] This application relates to MBMS technology, in particular to a method for sending MBMS service data. Background technique [0002] Two frame structures are specified in the LTE protocol: frame format 1 and frame format 2, respectively for FDD-LTE and TDD-LTE. [0003] In the LTE system, in order to meet the requirements of broadcast services, the MBMS function is introduced. Specifically, the base station can configure some subframes as MBSFN subframes, multiple cells in an area configure the same MBSFN subframe, and the base station sends exactly the same signal on these same configured MBSFN subframes, and the terminal side can set Signals from multiple cells are combined for reception, thereby completely eliminating inter-cell interference. [0004] Due to the limitations of the LTE protocol, FDD-LTE / TDD-LTE can only configure part of the downlink subframes as MBSFN subframes, as shown in Table 1: [0005] [0006] [0007] Table 1 [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04L27/26
CPCH04W4/06H04W76/00H04L5/0007H04L5/0044H04W76/40H04W72/30
Inventor 徐绍君杨小倩杨春兰
Owner CHENGDU TD TECH LTD