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Method for sending mbms service data

A transmission method and technology for service data, which are applied in directions such as broadcast service distribution, transmission path separation device, and payload distribution, etc., can solve problems such as inability to configure, reduce MBMS capacity, and inability to fully utilize downlink resources, and achieve full utilization and improvement. The effect of capacity

Active Publication Date: 2017-06-09
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)

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  • Method for sending mbms service data
  • Method for sending mbms service data
  • Method for sending mbms service data

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Embodiment Construction

[0034] In order to make the objectives, technical means and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings.

[0035] First, analyze the reasons 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) For subframe 0, it contains 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) F...

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Abstract

The present application discloses a method for sending MBMS service data, including: the base station configures the same MBSFN subframe in multiple cells, and sends the same MBMS signal on the configured MBSFN subframe; wherein, when configuring the MBSFN subframe, It is allowed to configure the subframe where SP‑SCH / S‑SCH is located as an MBSFN subframe; when the configured MBSFN subframe includes the subframe where P‑SCH / S‑SCH is located, it will not be occupied by the P‑SCH / S‑SCH Send the MBMS signal on the RE. By applying this application, the capacity of MBMS can be improved, and downlink resources can be fully utilized.

Description

technical field [0001] The present 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, which are respectively for FDD-LTE and TDD-LTE. [0003] In the LTE system, in order to meet the needs of broadcast services, the MBMS function is introduced. Specifically, the base station can configure some subframes as MBSFN subframes, and multiple cells in an area are configured with the same MBSFN subframes. Signals from multiple cells are combined for reception, thereby completely eliminating the problem of inter-cell interference. [0004] Due to the limitation of the LTE protocol, both 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 [0008] Due to the above configuration restrictions on MBSFN subframes, the downlink...

Claims

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Application Information

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Patent Type & Authority Patents(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