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Method and device for trunking service transmission

A cluster service and cluster multicast technology, applied in the field of communication, can solve the problems of large transmission delay, inability to reflect cluster transmission group characteristics, and inability to reflect group characteristics.

Active Publication Date: 2012-08-15
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem that the MBMS transmission method is not suitable for trunking transmission lies in: the transmission delay is large; the transmission method of transmitting multiple services in one MBSFN area cannot reflect the group characteristics of trunking transmission
In the LTE system, there is an MBMS transmission method, which is a multi-cell joint transmission technology that can be used for reference to solve the problem of co-channel interference. However, MBMS transmission has a large delay and cannot reflect the characteristics of the group, so it is not suitable for direct application to cluster transmission.

Method used

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  • Method and device for trunking service transmission
  • Method and device for trunking service transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0163] Embodiment one: see Figure 10 , the UE interprets the T-MCCH at each T-MCCH pre-configured resource position, so as to receive cluster transmission data.

[0164] On the eNB side, including:

[0165] Step S401: eNB sends system message SIB1, which includes scheduling information of SIB13;

[0166] Step S402: The eNB sends a system message SIB2, which includes the basic configuration of the MBSFN subframe, and the cluster transmission in the broadcast mode can only be performed in the subframes in the MBSFN subframe configuration set;

[0167] Step S403: eNB sends SIB13, which includes T-MCCH pre-configured resources and indication information of resource periods;

[0168] Step S404: When the eNB determines to send the T-MCCH, it sends the T-MCCH on the T-MCCH pre-configured resources, and the first subframe of the T-MCCH sends a scheduling command (which can be carried by the MSI MACCE), indicating that the cluster The specific subframe position for data transmissio...

Embodiment 2

[0176] Embodiment two: see Figure 11 , the T-MCCH transmission is indicated by the PDCCH scheduling order.

[0177] eNB side:

[0178] Step S501: eNB sends system message SIB1, which includes scheduling information of SIB13;

[0179] Step S502: The eNB sends a system message SIB2, which includes the basic configuration of the MBSFN subframe, and the cluster transmission in the broadcast mode can only be performed on the subframes in the MBSFN subframe configuration set;

[0180] Step S503: eNB sends SIB13 to notify T-MCCH of pre-configured resources and resource periods;

[0181] Step S504: The eNB sends a PDCCH scheduling command, indicating that there is T-MCCH transmission on the subsequent T-MCCH pre-configured resource position;

[0182] Step S505: When the eNB determines to send the T-MCCH, it sends the T-MCCH on the T-MCCH pre-configured resources, and the first subframe of the T-MCCH sends a scheduling command (which can be carried by the MSI MAC CE), indicating T...

Embodiment 3

[0189] Embodiment three: see Figure 12 , T-MCCH retransmission without scheduling command.

[0190] eNB side:

[0191] Step S601: The eNB sends T-MCCH initial transmission data.

[0192] Step S602: eNB sends T-MCCH retransmission data, the time interval between step S602 and step S601 is the retransmission time interval of T-MCCH indicated by eNB in ​​the system message (such as SIB13), the T-MCCH retransmission time interval It is an integer multiple of the T-MCCH preconfigured resource period.

[0193] Step S603: The eNB sends the next T-MCCH retransmission, and the time interval between Step S602 and Step S601 is the T-MCCH retransmission time interval indicated by the eNB in ​​the system message (such as SIB13).

[0194] UE side:

[0195] The UE receives the data initially transmitted on the T-MCCH at the pre-configured resource position of the T-MCCH.

[0196] The UE receives T-MCCH retransmission data. Since the UE is interpreting the T-MCCH at each T-MCCH pre-con...

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PUM

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Abstract

The invention discloses a method and a device for trunking service transmission, which are used for realizing trunking transmission in a broadcasting manner and improving performance of trunking transmission while overcoming co-channel interference. The method for trunking service transmission includes that an evolved node base (eNB) informs user equipment (UE) of pre-configured resource information of a trunking multicast control channel (T-MCCH); and the eNB sends the T-MCCH on the pre-configured resources of the T-MCCH when required, wherein the pre-configured resources of the T-MCCH are periodical.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a trunking service transmission method and device. Background technique [0002] The trunking communication system communicates in a half-duplex mode. During work, the acquisition and release of the channel is controlled by the Push To Talk (PTT) key, with high channel utilization and fast call connection; users in the group share the downlink channel, resource utilization High rate. Moreover, the trunking communication system can ensure the privacy and security of calls through voice encryption; assign channels to high-priority users or services; ensure communication in emergency situations through fault weakening functions; realize flexible multi-level group scheduling through dynamic reorganization command function. [0003] The current trunking communication system has developed to the stage of broadband trunking communication system. Relying on the most adva...

Claims

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Application Information

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IPC IPC(8): H04W4/06H04W4/10H04W16/02H04L1/00H04L1/18
CPCH04W4/10H04W16/02H04W76/45H04W72/30
Inventor 谌丽焦斌艾明徐晖王胡成任世岩
Owner DATANG MOBILE COMM EQUIP CO LTD
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