Method for assigning group call wireless network temporary identifiers

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, PDCCH scheduling resource collision, and reduction of cluster group data transmission efficiency, so as to reduce scheduling collisions. effect of probability

Inactive Publication Date: 2016-06-15
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 assigning group call wireless network temporary identifiers

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[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with 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 through the PDCCH scrambled by G-RNTI in the corresponding downlink subframe. group. The UE monitors the downlink authorization of the PDCCH channel with the G-RNTI as the identifier, and if it detects that there is a downlink authorization for the G-RNTI of the cluster group to which the UE belongs, it receives the downlink data at the position of the resource block indicated by the downlink authorization.

[0036] The core idea of ​​the present invention is: by restricting the starting position of the CCE ...

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Abstract

The present application discloses a method for allocating group call wireless network temporary identifiers, including: for each group of preset system configuration parameters, find out the group call wireless network temporary identifier G-RNTI resources configured by the system. The G-RNTI that satisfies the preset condition when the system configures parameters; the preset condition is that there are at least the M downlink subframes in one radio frame: the UE-specific search space calculated according to the G-RNTI and the system The configured public search spaces completely overlap; the G-RNTIs found are deleted from the G-RNTI resources to obtain the candidate G-RNTI resources corresponding to the group of system configuration parameters; For RNTI, within the scope of the candidate G-RNTI resource corresponding to the currently configured system configuration parameters, allocate the G-RNTI to the cluster group. The invention can reduce the collision of PDCCH scheduling resources.

Description

technical field [0001] The invention relates to trunking communication technology, in particular to a method for allocating group call radio network temporary identifiers (G-RNTI). Background technique [0002] The trunking group call service is a point-to-multipoint service, which plays a huge role in the field of professional communication. At present, digital trunking communication systems with trunking group call services that are 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 broadband mobile communication wireless access technology. Compared with the wireless access technology of the existing 2G and 3G mobile communication systems, it has the characteristics of high transmission rate, small transmission delay, and high QoS guarantee. In the existing TD-LTE technology, it is the development direction of the trunking communication system to...

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Application Information

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Patent Type & Authority Patents(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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