Method for allocating group-calling radio network temporary identity

A wireless network and temporary identification technology, applied in the directions of wireless communication, network topology, broadcast service allocation, etc., can solve the problems of PDCCH resource collision, cluster group sending PDCCH, PDCCH scheduling resource collision, etc., so as to reduce the probability of scheduling collision. Effect

Inactive Publication Date: 2014-01-29
POTEVIO INFORMATION TECH CO LTD
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Problems solved by technology

In this way, if the candidate PDCCH search space calculated by the G-RNTI of the cluster group completely overlaps with the common search space, PDCCH resource collision will occur, resulting in the eNB being unable to send PDCCH to the cluster group. Even if the PDSCH resource is sufficient, the cluster group cannot Unable to be scheduled, resulting in a decrease in the transmission efficiency of trunking group call downlink data
[0022] It can be seen that the problem of PDCCH scheduling resource collision is prone to occur in the existing trunking communication system

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  • Method for allocating group-calling radio network temporary identity

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[0034] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] In the TD-LTE broadband digital trunking communication system, the downlink scheduler allocates physical layer resources to the trunking group through dynamic resource allocation, and sends downlink grants to the trunking group in the corresponding downlink subframe through the PDCCH scrambled by G-RNTI. group. The UE uses the G-RNTI as an identifier to monitor the downlink grant of the PDCCH channel. If a downlink grant for the cluster group G-RNTI to which the UE belongs is detected, the downlink data is received at the location of the resource block indicated by the downlink grant.

[0036] The core idea of ​​the present invention is: by limiting the starting position of the CCE of the cluster group PDCCH, the PDCCH search spa...

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Abstract

The invention discloses a method for allocating group-calling radio network temporary identity. The method includes that for each group of preset system configuring parameters, a G-RNTI (group calling-radio network temporary identity) meeting the preset condition in the process of configuring parameters of a system is found in the G-RNTI resources configured by the system; the preset condition is that within a wireless frame, at least M downlink subframes exist; a UE (user equipment) exclusive searching space acquired by calculation of the G-RNTI is completely superposed with a public searching space configured by the system; the found G-RNTI is deleted from the G-RNTI resources to obtain a candidate G-RNTI resource corresponding to the system configuration parameters; when to allocate the G-RNTI for clusters, the G-RNTI is allocated to the clusters within the candidate G-RNTI resource range corresponding to the currently configured system configuration parameters. Collision of scheduling resources of PDCCH (physical downlink control channels) can be reduced.

Description

technical field [0001] The present invention relates to a trunking communication technology, in particular to a method for assigning a group call radio network temporary identifier (G-RNTI). Background technique [0002] The trunking group call service is a point-to-multipoint service and plays a huge role in the field of professional communications. At present, the digital trunking communication systems with trunking group call service widely used in China include TETRA, iDEN, GoTa and GT800, etc. These systems are all based on GSM technology or CDMA technology. [0003] TD-LTE technology is a new generation of wireless access technology for broadband mobile communication. Compared with the wireless access technology of existing 2G and 3G mobile communication systems, it has the characteristics of high transmission rate, small transmission delay and high QoS guarantee. On the existing TD-LTE technology, it is the development direction of the trunking communication system t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/08H04W72/04H04W84/08
Inventor 周欣吕征南韦玮
Owner POTEVIO INFORMATION TECH CO LTD
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