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A method for transmitting downlink data of trunking group call service

A technology of downlink data and transmission method, applied in the field of communication, can solve the problem of increasing downlink data transmission delay, and achieve the effect of reducing transmission delay and ensuring normal transmission

Inactive Publication Date: 2016-03-23
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, the control information and service data of the same group call may exist in the same subframe. Since the control information and service information cannot be transmitted at the same time, the independent transmission of control information and service information will increase the transmission delay of downlink data.

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  • A method for transmitting downlink data of trunking group call service
  • A method for transmitting downlink data of trunking group call service
  • A method for transmitting downlink data of trunking group call service

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Embodiment Construction

[0036] In order to express the objectives, technical solutions and advantages of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] In the embodiment of the present invention, when a plurality of different types of trunking group call services perform downlink data transmission, the base station (eNB) can multiplex the logical channels corresponding to these data on the media access layer protocol data unit (MACPDU), After demultiplexing, the UEs of the trunking group can accurately identify the logical channel type of the trunking group call. TCCH and TTCH can be multiplexed on the same MAC PDU. When the UE in the trunking group demultiplexes and splits the MAC PDU, it identifies the logical channel type of the trunking group call according to the identifier and the logical channel number of the trunking group call, and reads the downlink data from t...

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Abstract

The invention discloses a transmission method for downlink data of trunking group call service. The transmission method comprises the steps that after UE (user equipment) receives paging control information of a TPCCH (trunking paging control channel); a PDCCH (physical downlink control channel) is monitored; the UE descrambles the received PDCCH by identifications to obtain downlink authorization information; an MAC PDU (media access control protocol data unit) obtained according to the downlink authorization information is demultiplexed to obtain a trunking group call logical channel number; a trunking group call logic channel type is determined by the trunking group call logical channel number; and the downlink data in an MAC SDU (media access control service data unit) corresponding to the trunking group call logic channel type is transmitted. When the transmission method is applied, the normal transmission of the downlink data is ensured, so that the transmission delay of the downlink data is reduced.

Description

technical field [0001] The present invention relates to the field of communication technologies, and more particularly, to a method for transmitting downlink data of a trunking group call service. Background technique [0002] The broadband digital trunking communication system based on TD-LTE technology can not only support various multimedia services of the TD-LTE mobile communication system itself, but also provide basic trunking call services and trunking multimedia services, such as voice group call, voice single call, Video group call, video single call, broadcast call, real-time video transmission, etc. In order to realize the establishment of the fast call of the trunking group call service, according to the point-to-multipoint service characteristics of the trunking communication system, by modifying the air interface technology and adding a new logical channel, the broadband digital trunking communication system based on the TD-LTE technology is realized. For poin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/10H04W72/12
Inventor 周欣吕征南韦玮
Owner POTEVIO INFORMATION TECH CO LTD
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