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A transmission method, network device and terminal device for multimedia broadcast multi-cast service data

A data transmission method and multimedia broadcasting technology, applied in the field of data transmission, can solve the problems of unguaranteed scheduling flexibility, high complexity, inability to transmit MBMS data, etc.

Active Publication Date: 2008-02-13
LIANYUNGANG RES INST NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even with this method, since the duration of the uplink TTI is longer, more TTI formats must be defined, and both the receiver and the transmitter need to determine which uplink subframes the uplink scheduling grant signaling in a downlink subframe corresponds to. Frame, which needs to support dynamic uplink TTI configuration, has a high degree of complexity; moreover, in this method, MBMS data still cannot be transmitted in the same subframe as uplink HARQ ACK / NACK and downlink scheduling signaling, and the data scheduled during data transmission Flexibility is still not guaranteed

Method used

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  • A transmission method, network device and terminal device for multimedia broadcast multi-cast service data
  • A transmission method, network device and terminal device for multimedia broadcast multi-cast service data
  • A transmission method, network device and terminal device for multimedia broadcast multi-cast service data

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Embodiment 1

[0123] In this embodiment, the MBMS data is sent in the SFN mode, and the MBMS data subframes are punctured in the SFN puncturing mode sequence. The SFN puncturing pattern sequence here refers to dividing the punctured positions in the subframe into multiple puncturing groups, each puncturing group is represented by a unique puncturing group identifier, and adjacent cells are in the same Use different hole sets in the SFN hole punch pattern sequence at all times. For ease of description, the positions to be punched are referred to as hole positions for short below.

[0124] Since in SFN mode, the cell common pilot contained in the MBMS data subframe cannot be used for channel estimation of a specific cell, so in this embodiment, the cell-specific pilot is also carried at the specific hole position (PuncturingPosition) of each hole group data, these specific slots are called pilot slots. For the completeness of the common pilot data of the cell, this embodiment performs hole ...

Embodiment 2

[0144] In this embodiment, the SFN mode is also used to send MBMS data. The difference from Embodiment 1 is that in this embodiment, the hole positions in the MBMS data subframe are not divided into hole groups, but after the common pilot positions of the cells are pre-determined, the positions of the common pilots of the non-cells are punctured, and the The way of code division enables each cell to reuse all holes. In this case, it is still necessary to designate some specific holes to transmit cell-specific pilot data. These specific holes are still called pilot holes, and other holes are called non-pilot holes, but here The pilot hole position is no longer for a certain hole group. In this embodiment, a group of orthogonal sequences is allocated to adjacent cells, and different cells use mutually different but mutually orthogonal sequences to extend cell-specific pilot data and downlink physical layer control signaling, and the extended The cell-specific pilot data is map...

Embodiment 3

[0157] In this embodiment, the MBMS data is sent in a single-cell mode, and the MBMS data subframes are punctured in a single-cell puncturing mode sequence. The single-cell puncturing pattern sequence here means that all the hole positions in the MBMS data subframe are exclusively shared by one cell, so there is no need to divide hole groups.

[0158] Fig. 6 shows a schematic diagram of the distribution of pore positions in a single-cell puncturing pattern sequence. Referring to FIG. 6 , in this punching pattern sequence, the punching pattern identifier is used as punching information, the number of punching holes in each punching pattern can be the same, and the punched hole positions are evenly distributed. Since there is no situation in which multiple cells reuse MBMS data subframes in this embodiment, what is mapped in the pilot position is the cell-specific pilot data used as the basis for channel estimation of the cell, and the punctured hole positions can be Only the d...

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Abstract

The present invention discloses a data transmission method of the multimedia broadcasting multi-broadcasting service (MBMS), predefining the punching information of a MBMS data subframe. The method includes two steps. Firstly, an evolutionary universal terrestrial radio access network base station (eNB) punches the present MBMS data subframe according to the defined punching information, maps the control signals of the downlink physical layer on the punched position and maps the MBMS data on the unpunched position, and then the MBMS data subframe is sent to the user equipment (UE); secondly, according to the punching information corresponding to the present MBMS data subframe, the user equipment (UE) acquires the control signals of the downlink physical layer from the received present MBMS data subframe, and according to the requirement, acquires the MBMS data. The present invention also provides a network device sending the MBMS data subframe and a terminal device receiving the MBMS data subframe. The present invention can increase the throughput rate of a communication system and enhance the flexibility of dispatching.

Description

technical field [0001] The invention relates to the data transmission technology in the wireless communication system, in particular to a multimedia broadcast multicast service (MBMS) data transmission method, network equipment and terminal equipment. Background technique [0002] With the rapid development of wireless communication technology and the continuous improvement of communication equipment functions, in order to improve the spectrum utilization rate of wireless communication systems and provide higher data transmission rates, and then improve the competitiveness of third-generation (3G) technology in the mobile communication market , the Third Generation Partnership Project (3GPP) organization proposed a Radio Access Technology (RAT) Long Term Evolution (LTE) system capable of supporting enhanced MBMS services. In the Evolved Universal Terrestrial Radio Access Network (E-UTRAN) corresponding to the LTE system, it includes multiple E-UTRAN base stations (eNBs), and...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04Q7/38H04L12/18
Inventor 刘晟司宏杰
Owner LIANYUNGANG RES INST NANJING UNIV OF SCI & TECH
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